Control method for automatically recognizing replacement of a pot by a lifting hood

Abstract

The application provides a control method for automatic recognition and replacement of a pot by a lifting range hood, and relates to the technical field of lifting range hoods, and comprises the following steps: S1: a main controller acquires an original distance L1 and a standard distance D; S2: whether the sensing distance in front of the sensor changes and the changed distance value is equal to the standard distance D is judged, if yes, step S3 is executed, otherwise, no operation is performed; S3: whether the sensing distance in front of the sensor changes again is judged, if yes, step S4 is executed, otherwise, no operation is performed; S4: the stable distance L2 sensed in front of the sensor is acquired and sent to the main controller; S5: based on the original distance L1 and the stable distance L2, the adjustment height H required by the height of the lifting range hood is calculated, and the lifting range hood is adjusted. The application judges the pot replacement operation of a user by detecting the distance change of the sensor, adjusts the height of the smoke collection cavity according to the distance value after the pot is replaced, is intelligent, and has high recognition accuracy for the replacement of the pot.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lifting range hood, in particular, the present application relates to a control method for automatic identification and replacement of the pot of lifting range hood. BACKGROUND

[0002] The lifting range hood is a kind of range hood with lifting cavity. By changing the position of the cavity, the distance between the cavity and the pot is reduced to improve the suction effect. The cavity can be retracted when not in use to reduce the size of the range hood and facilitate user operation. In the prior art, the lifting control of the cavity is usually achieved by setting a sensor to detect the distance of the pot, and then adjusting the height of the cavity to keep the distance between the cavity and the pot at the optimal suction distance.

[0003] Now there are more and more structure designs for lifting range hood. For example, an intelligent lifting range hood includes a housing, a smoke guide plate or a smoke collecting cover arranged below the housing, a drive motor arranged in the housing for driving the smoke guide plate or the smoke collecting cover to rise or fall, a control panel electrically connected with the drive motor for starting or stopping the drive motor, and a transmission mechanism for converting the rotary motion of the output shaft of the drive motor into the up-down motion of the smoke guide plate or the smoke collecting cover. The housing is provided with a first magnet coupled with the output shaft of the drive motor and driven to rotate by the drive motor. The housing is also provided with a detection device opposite to the first magnet. The control panel detects the rotation angle of the drive motor in real time according to the output signal of the detection circuit to obtain the current lifting position of the smoke guide plate or the smoke collecting cover. The above-mentioned application can accurately obtain the current lifting position of the smoke guide plate or the smoke collecting cover to achieve the purpose of intelligent control of the suction effect of the range hood.

[0004] However, due to the diversity of user's cooking needs, the pot may need to be replaced during cooking. If the user replaces the pot according to the cooking needs, the originally preset height cannot match the newly replaced pot, and the suction effect cannot reach the best. The user needs to manually press the relevant key position of the range hood to re-adjust the height of the smoke collecting cavity to make the suction effect reach the best, which is troublesome. Especially when the user replaces a large pot with a small pot, the originally matched height of the smoke collecting cavity may make the user's operation space small, affecting the user experience.

[0005] Therefore, in order to solve the above problems, it is necessary for us to design a reasonable and efficient control method for automatic identification and replacement of the pot of lifting range hood. SUMMARY

[0006] The purpose of the present application is to provide a control method for automatically identifying and replacing cookware of a lifting range hood, which judges the user's cookware replacement operation by detecting the distance change of a sensor, adjusts the height of the smoke collection cavity according to the distance value after the cookware is replaced, and optimally sucks the oil fume of the new cookware, which is intelligent and has high recognition accuracy for replacing cookware.

[0007] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0008] A control method for automatically identifying and replacing cookware of a lifting range hood, which is suitable for the control structure of a lifting range hood, and the structure comprises: a stove head arranged on a cooking bench, a lifting range hood arranged above the stove head, and a sensor arranged on the lifting range hood and extending downward, wherein the lifting range hood is provided with a main controller for electrically connecting with the sensor and a range hood lifter electrically connected with the main controller; the method comprises the following steps:

[0009] S1: the main controller acquires the original distance L1 sensed in front of the sensor and the standard distance D between the sensor and the stove head;

[0010] S2: it is judged whether the sensed distance in front of the sensor changes and the changed distance value is equal to the standard distance D, if yes, step S3 is executed, otherwise, no operation is performed;

[0011] S3: it is judged whether the sensed distance in front of the sensor changes again, if yes, step S4 is executed, otherwise, no operation is performed;

[0012] S4: the stable distance L2 sensed in front of the sensor is acquired and sent to the main controller;

[0013] S5: based on the original distance L1 and the stable distance L2, the adjustment height H required for the height of the lifting range hood is calculated, and the lifting range hood is adjusted.

[0014] As a preferred embodiment of the present application, when step S1 is executed, the main controller acquires the sensed distance in front of the sensor, i.e. the original distance L1, after the lifting range hood is started and enters the normal working state.

[0015] As a preferred embodiment of the present application, when step S1 is executed, the main controller calculates the standard distance D between the sensor and the stove head according to the working data of the range hood lifter and the installation position data of the sensor after the lifting range hood works normally.

[0016] As a preferred embodiment of the present application, when step S2 is executed, if the sensed distance in front of the sensor does not change, and if the changed distance value is less than the standard distance D between the sensor and the stove head after the change, it is indicated that the cookware is still on the cooking bench.

[0017] As the preferred embodiment of the present application, when step S3 is performed, it is judged whether the sensing distance in front of the sensor changes again within the first predetermined time; if yes, step S4 is performed, otherwise, no operation is performed and the main controller enters standby state.

[0018] As the preferred embodiment of the present application, when step S3 is performed, the first predetermined time value is preset according to the current time.

[0019] As the preferred embodiment of the present application, when step S4 is performed, if the sensing distance in front of the sensor does not change for the second predetermined time, the distance value is recorded, i.e. the stable distance L2.

[0020] As the preferred embodiment of the present application, when step S5 is performed, based on the original distance L1 and the stable distance L2, the adjustment height H = L1-L2 required for the height adjustment of the lifting range hood is calculated.

[0021] If the value of H is positive, the lifting range hood is adjusted to move upward, otherwise, if the value of H is negative, the lifting range hood is adjusted to move downward; the adjustment value of the lifting range hood is the absolute value of H.

[0022] As the preferred embodiment of the present application, when step S6 is performed, it is judged whether the adjustment value of the lifting range hood is not less than the preset precision value X, if yes, the main controller controls the lifting range hood to lift the adjustment distance value through the range hood lifter, and the adjustment of the lifting range hood is completed, otherwise, no operation is performed.

[0023] As the preferred embodiment of the present application, when step S6 is performed, when the adjustment of the lifting range hood is performed, it is judged whether the lifting range hood moves to the upper and lower limits, if yes, the adjustment of the lifting range hood is stopped, otherwise, no operation is performed.

[0024] The control method for the lifting range hood to automatically recognize the replacement of the pot has the advantages that: the replacement of the pot by the user is judged by detecting the distance change through the sensor, the height of the smoke collection cavity is adjusted according to the distance value after the replacement of the pot, the new pot oil fume is optimally sucked, the intelligence is high, and the recognition accuracy for the replacement of the pot is high. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0026] Fig. 1 The control flowchart of one embodiment of the control method for the lifting range hood to automatically recognize the replacement of the pot of the present application;

[0027] Fig. 2A side view of a lifting range hood control structure of a control method for automatically identifying and replacing a pot of the lifting range hood according to the present application;

[0028] Fig. 3 A side view of a lifting range hood control structure of a control method for automatically identifying and replacing a pot of the lifting range hood according to the present application in another embodiment. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

[0030] In the following description, the terms "first", "second", etc. are used only for the purpose of description, and cannot be understood as indicating or implying relative importance. The following description provides a plurality of embodiments of the present application, and different embodiments can be replaced or combined, so that the present application can also be considered to include all possible combinations of the same and / or different embodiments described. Therefore, if one embodiment includes features A, D, D, and another embodiment includes features D, D, the present application should also be considered to include one or more embodiments of all other possible combinations containing A, D, D, D, although the embodiment may not be explicitly described in the following content.

[0031] The following description provides examples and does not limit the scope, applicability or examples set forth in the claims. Changes can be made to the functions and arrangements of the described elements without departing from the scope of the present application. Various examples can appropriately omit, replace or add various processes or components. For example, the described methods can be performed in different order from the described order, and various steps can be added, omitted or combined. In addition, features described with respect to some examples can be combined into other examples.

[0032] Embodiment: Please refer to Figs. 1 to 3 The control method for automatically identifying and replacing a pot of the lifting range hood according to the present application is suitable for a lifting range hood control structure, which includes: a burner head arranged on a cooking bench, a lifting range hood arranged above the burner head, a sensor arranged on the lifting range hood and extending downward, a main controller arranged in the lifting range hood and electrically connected with the sensor, and a range hood lifter electrically connected with the main controller.

[0033] In the present application, the burner head is arranged on the cooking bench and used for placing a pot. In the direction in which a worker stands, the front is regarded as the front, and the lifting range hood is arranged on the upper side of the rear of the burner head. The lifting range hood can be lifted up and down, and can extend to the rear of the pot when descending to suck the steam and oil fume of the pot.

[0034] It should be noted that the part of the lifting hood that lifts is actually the hood cavity of the lifting hood, and all the following "lifting of the lifting hood" is "lifting of the hood cavity".

[0035] A sensor is arranged on the lifting hood, which is preferably an infrared distance meter, and the sensor is arranged downwardly, which can measure the distance of the obstacle in front, and is generally used to measure the distance of the pot arranged on the burner in front.

[0036] Most of the lifting hoods are of flip cover type and lower expansion type, the former of which opens the cover plate in front of the hood cavity to extend to the pot directly above to guide and suck the oil fume of the pot, and the latter of which widens the lower end opening of the hood cavity to extend to the pot directly above to suck the oil fume of the pot.

[0037] The sensor is preferably arranged above the pot, and if it is a flip cover type lifting hood, the sensor is arranged on the cover plate, as shown in Fig. 2 , and if it is a lower expansion type lifting hood, the sensor is arranged at the lower end opening of the hood cavity, as shown in Fig. 3 .

[0038] In addition, a main controller is arranged in the lifting hood for electrical connection with the sensor, so that the sensor obtains the distance of the obstacle in front (hereinafter referred to as the sensor front sensing distance) and then sends it to the main controller.

[0039] The lifting hood further comprises a hood lifter electrically connected with the main controller, that is, the main controller controls the lifting of the hood cavity of the lifting hood through the hood lifter.

[0040] The method comprises the following steps:

[0041] S1: The main controller obtains the original distance L1 sensed by the sensor in front and the standard distance D between the sensor and the burner;

[0042] As an option of the embodiment of the present application, the main controller obtains the distance of the pot in front of the sensor with a premise, that is, after the height adjustment of the hood cavity is completed when the lifting hood is started and the lifting hood is ensured to work normally, the main controller obtains the distance of the pot in front of the sensor.

[0043] When the lifting hood is started, the lifting hood is manually started to complete the start, and then the lifting of the lifting hood is adjusted through the function button control or automatic lowering of the lifting hood, until the height of the hood cavity of the lifting hood corresponds to the pot on the current burner, that is, after the height adjustment of the hood cavity is completed, the sensor can sense the pot below at this time, and the main controller obtains the distance of the pot in front of the sensor, that is, the original distance L1.

[0044] Meanwhile, after the height adjustment of the smoke collecting cavity is completed at the start of the lifting hood, i.e. after the normal work of the lifting hood, the main controller calculates the distance D between the sensor and the cooking head according to the work data of the lifting hood, which can be regarded as the standard distance D.

[0045] Generally, when step S1 is performed, the main controller records the sensing distance in front of the sensor, i.e. the original distance L1, and then determines whether the original distance L1 is less than the standard distance D. If yes, it means that there is a pot on the cooking head, i.e. step S2 is performed. Otherwise, the sensor sensing is abnormal, or no pot is placed, and an alarm needs to be given.

[0046] Here, the standard distance D is the vertical distance between the sensor and the cooking head, which is a known value. After the lifting hood is started and the debugging is completed, the standard distance D is a given value, or in other words, after the normal work of the lifting hood when step S1 is performed, the main controller calculates the distance between the sensor and the cooking head according to the work data of the lifting hood and the installation position data of the sensor, and then the standard distance D is obtained and recorded.

[0047] The detailed algorithm of the standard distance D is as follows: after the lifting hood is started, the lifting hood is lowered by a distance M1, the lifting hood is retracted, i.e. in the initial state, the bottom of the lifting hood is away from the cooking bench by a distance M2, the height of the cooking head is M3, and the installation position data of the sensor, i.e. the distance between the sensor and the bottom of the lifting hood when the sensor is installed, is M4. Then the standard distance D = M2+M4-M1-M3.

[0048] Moreover, the standard distance D will be updated after each lifting of the smoke collecting cavity.

[0049] After the distance between the sensor and the current pot, i.e. the original distance L1, is obtained, the sensor continues to detect the distance and transmits the distance data to the main controller. Of course, the sensing distance value of the sensor is always not greater than the standard distance D.

[0050] S2: determine whether the sensing distance in front of the sensor changes and the distance value after the change is equal to the standard distance D. If yes, step S3 is performed. Otherwise, no operation is performed.

[0051] As an option of the embodiment of the present application, during the cooking process of the kitchen staff, the pot will inevitably be touched, at which time the real-time distance in front of the sensor will change. If the real-time distance after the change is less than the standard distance D, it means that the staff is stirring the pot during cooking, and no operation is performed. Otherwise, if the real-time distance is equal to the standard distance D, it can be considered that the staff takes away the current pot, and the sensor directly senses the cooking head. At this time, further judgment needs to be performed, and step S3 is performed.

[0052] In summary, if the sensing distance in front of the sensor does not change, or changes and the changed distance value is less than the distance C between the sensor and the cooking top, it indicates that the pot is still on the cooking top; otherwise, if the sensing distance in front of the sensor changes and the changed distance value is equal to the distance C between the sensor and the cooking top, it indicates that the current pot is taken away and needs to be continuously detected.

[0053] S3: judging whether the sensing distance in front of the sensor changes again, if yes, executing step S4, otherwise, no operation is performed;

[0054] In fact, when step S3 is executed, it is judged whether the sensing distance in front of the sensor changes within the first predetermined time; if yes, step S4 is executed, otherwise, no operation is performed and the main controller enters the standby state.

[0055] As an option of the embodiment of the present application, if the pot is taken away and the cooking operation is not stopped, the pot is still placed back on the cooking top, when the pot is taken away, the sensing distance in front of the sensor changes within the first predetermined time and the distance value at the changing moment is less than the standard distance D, it indicates that the pot is placed back on the cooking top; otherwise, the pot is not placed back or the pot is not sensed.

[0056] It should be noted that, but taking away the pot generally means pouring out dishes, washing the pot or replacing the pot, the first two cases can be understood as not replacing the pot, and the latter is replacing the pot.

[0057] If the pot is not replaced, it indicates that the real-time distance between the sensor and the pot in front of the sensor will return to the original distance L1 sensed by the main controller in step S1, which is still less than D, and can be regarded as the pot being placed back;

[0058] If the pot is replaced, it is divided into two cases, a higher new pot is replaced or a lower new pot is replaced, if the higher new pot is replaced, the real-time distance between the sensor and the pot in front of the sensor is still less than the original distance L1; otherwise, if the lower new pot is replaced, the real-time distance between the sensor and the pot in front of the sensor is greater than the original distance L1, but the pot exists, so the sensing distance is still less than the standard distance D.

[0059] In summary, no matter whether the placed-back pot is high or low, as long as the pot is placed back, the sensing distance in front of the sensor will certainly change.

[0060] In addition, when step S3 is executed, the first predetermined time value is generally 20 seconds to 100 seconds, if the sensing distance in front of the sensor changes within the first predetermined time value, it is considered that the pot is placed back; otherwise, if the sensing distance in front of the sensor does not change within the first predetermined time value, it is considered that the cooking work is completed and the main controller enters the standby state.

[0061] Further, when performing step S3, a first predetermined time value is preset according to the current time; preferably, a perpetual calendar is added in the main controller to obtain the current time, and the first predetermined time value is preset according to the current time value; for example, the lunch time of weekdays is from 11:00 to 12:00 and from 17:00 to 19:00, the first predetermined time value is shorter, which is 40 seconds; the other non-lunch time of weekdays, the first predetermined time value is longer, which is 80 seconds; the whole day time of holidays, the first predetermined time value is the shortest, which is 30 seconds.

[0062] S4: obtaining a stable distance L2 sensed in front of the sensor and sending to the main controller;

[0063] As an option of the embodiment of the present application, when the sensed distance in front of the sensor changes, it can be considered that the pot is placed on the stove again, but the pot may only be placed for a short time and may be taken away again in a short time. Only when the distance sensed in front of the sensor is stable, it means that the pot is stably positioned on the stove, and further operation is needed at this time.

[0064] That is, when performing step S4, if the sensed distance in front of the sensor does not change for a second predetermined time, the distance value is recorded, that is, the stable distance L2.

[0065] S5: based on the original distance L1 and the stable distance L2, the adjustment height H required for the height adjustment of the lifting range hood is calculated, and the lifting range hood is adjusted.

[0066] As an option of the embodiment of the present application, when performing step S5, the original distance L1 and the stable distance L2 are obtained, and the adjustment height H required for the height adjustment of the lifting range hood is calculated, that is, H=L1-L2.

[0067] If the value of H is positive, the lifting range hood is adjusted by moving upward; otherwise, if the value of H is negative, the lifting range hood is adjusted by moving downward; the moving adjustment value of the lifting range hood is the absolute value of H. After the moving adjustment of the lifting range hood, the distance between the smoke collecting cavity and the top of the new pot is the preset optimal suction height value N.

[0068] Further, when performing step S6, it is judged whether the moving adjustment value of the lifting range hood is not less than the preset precision value X, if yes, the main controller controls the lifting range hood to lift by the adjustment distance value through the range hood lifter, and the moving adjustment of the lifting range hood is completed; otherwise, no operation is performed.

[0069] The preset precision value X is a preset value, if the adjustment distance value H (the absolute value of H should be) required by the lifting smoke machine is less than the preset precision value X, it is considered that the lifting adjustment of the lifting smoke machine has little effect on the smoke suction effect, the evaluation can not be adjusted, and the collection smoke cavity can be prevented from moving frequently, and the staff observation is not good; on the contrary, if the adjustment distance value H (the absolute value of H should be) required is not less than the preset precision value X, then the lifting of the lifting smoke machine is required.

[0070] In addition, when step S6 is performed, the lifting smoke machine moves to adjust, and whether the lifting smoke machine moves to the upper and lower limits is judged, if yes, the lifting smoke machine stops moving adjustment, otherwise, no operation is performed.

[0071] When the lifting smoke machine is adjusted upwards, if the lifting smoke machine moves to the upper limit, the distance between the lifting smoke machine and the upper side of the new pot is still less than the preset optimal suction height value N, then it is indicated that the pot is too high or the sensor is abnormal, and an alarm should be sent; otherwise, no operation is performed, that is, the lifting smoke machine continues to adjust upwards.

[0072] Similarly, when the lifting smoke machine is adjusted downwards, if the lifting smoke machine moves to the lower limit, the distance between the lifting smoke machine and the upper side of the new pot is still greater than the preset optimal suction height value N, then it is indicated that the pot is too low or the sensor is abnormal, and an alarm should be sent; otherwise, no operation is performed, that is, the lifting smoke machine continues to adjust downwards.

[0073] The control method for the lifting smoke machine to automatically identify the replacement of the pot, the distance change is detected by the sensor to judge the user's pot replacement operation, the height of the collection smoke cavity is adjusted according to the distance value after the pot is replaced, the new pot oil fume is optimally sucked, the intelligence is high, and the recognition accuracy for the replacement of the pot is high.

[0074] The above is only an exemplary embodiment of the present disclosure, and cannot limit the scope of the present disclosure. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. Those skilled in the art will easily think of embodiments of the present disclosure after considering the specification and practicing the disclosure herein. The present application aims to cover any variations, uses or adaptive changes of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not recorded in the present disclosure. The scope and spirit of the present disclosure are defined by the claims. The specification and examples are only considered as exemplary, and the scope and spirit of the present disclosure are defined by the claims.

Claims

1. A control method for automatically identifying and changing cookware in a lifting range hood, characterized in that, The method includes the following steps: S1: The main controller acquires the original distance L1 sensed in front of the sensor and the standard distance D between the sensor and the stove head; After the lifting range hood completes its startup and enters normal working state, the main controller obtains the distance between the sensor in front of the pot and the cookware, which is recorded as the original distance L1; After the range hood is working normally, the main controller calculates the standard distance D between the sensor and the stove head based on the working data of the range hood lift and the sensor installation position data. S2: Determine whether the sensing distance in front of the sensor has changed and whether the changed distance value is equal to the standard distance D; if yes, proceed to step S3; otherwise, do not perform the operation. S3: Determine whether the sensing distance in front of the sensor changes again within the first predetermined time; if yes, proceed to step S4; otherwise, do not perform the operation, and the main controller enters standby mode. S4: When the sensing distance in front of the sensor changes again as described in step S3, and the sensing distance in front of the sensor does not change for a second predetermined time, then the distance value is recorded as the stable distance L2 and sent to the main controller. S5: Based on the original distance L1 and the stable distance L2, calculate the required adjustment height H of the lifting range hood and adjust the lifting range hood accordingly.

2. The control method for automatic identification and replacement of cookware by a lifting range hood according to claim 1, characterized in that: When performing step S2, if the sensing distance in front of the sensor does not change, or if it changes and the changed distance value is less than the standard distance D between the sensor and the stove, it means that the pot is still on the stove.

3. The control method for automatic identification and replacement of cookware by a lifting range hood according to claim 1, characterized in that: When performing step S3, a first predetermined time value is preset based on the current time.

4. The control method for automatically identifying and changing cookware in a lifting range hood according to claim 1, characterized in that: When performing step S5, the required adjustment height H = L1 - L2 is calculated based on the original distance L1 and the stable distance L2. If the value of H is positive, the range hood will move upward to adjust; conversely, if the value of H is negative, the range hood will move downward to adjust; the adjustment distance of the range hood is the absolute value of H.

5. The control method for automatic identification and replacement of cookware by a lifting range hood according to claim 4, characterized in that: When executing step S5, it is determined whether the adjustment distance value of the lifting range hood is not less than the preset accuracy value X. If so, the main controller controls the lifting range hood to raise or lower the adjustment distance value through the range hood lifter to complete the adjustment of the lifting range hood movement; otherwise, no operation is performed.

6. The control method for automatic identification and replacement of cookware by a lifting range hood according to claim 4, characterized in that: When performing step S5, during the adjustment of the lifting range hood, it is determined whether the lifting range hood has moved to the upper or lower limit. If so, the lifting range hood stops moving and adjusting; otherwise, no operation is performed.

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