Range hood detection method, device and range hood

Abstract

The present invention discloses a range hood detection method, device and range hood, comprising: in response to an air duct diagnosis instruction for the range hood, controlling the operation of the fan of the range hood, the range hood being currently installed at a target position; obtaining actual electrical parameter information of the fan of the range hood during operation; and determining the air duct diagnosis result when the range hood is installed at the target position according to the actual electrical parameter information, so as to realize the air duct effect of the range hood after diagnosis.

Description

Technical Field

[0001] The present invention belongs to the field of detection technology, and in particular relates to a range hood detection method, device and range hood. Background Art

[0002] The accurate installation of the range hood is a major factor affecting the smoke extraction effect of the range hood. If the range hood is not installed well, the smoke extraction effect of the range hood will be reduced. In order to improve the installation effect of the range hood, the relevant technology designs a suitable installation structure to assist the installation of the range hood. The installation position of the range hood can be adjusted by adjusting the installation structure to improve the efficiency and effect of installing the range hood. Summary of the invention

[0003] The present invention aims to solve, at least to a certain extent, the technical problem of inconvenient air duct detection of a range hood after installation, and provides a range hood detection method, device and range hood.

[0004] In a first aspect, an embodiment of the present invention provides a range hood detection method, comprising: in response to an air duct diagnosis instruction for a range hood, controlling the operation of a fan of the range hood, the range hood being currently installed at a target position; obtaining actual electrical parameter information of the fan of the range hood during operation; and determining, based on the actual electrical parameter information, an air duct diagnosis result when the range hood is installed at the target position.

[0005] The embodiment of the present invention controls the operation of the installed range hood through air duct diagnostic instructions to obtain actual electrical parameter information of the fan during operation, and uses the actual electrical parameter information to diagnose the air duct condition, thereby being able to automatically diagnose the air duct effect of the range hood after installation with one click, thereby achieving convenient and rapid diagnosis of air duct problems, facilitating users and installers to quickly troubleshoot air duct problems, and further, helping to improve the installation efficiency of the range hood, and also helping to ensure the smoking and exhaust effects of the range hood after installation.

[0006] In some embodiments, determining the air duct diagnosis result when the range hood is installed at the target position based on the actual electrical parameter information includes: obtaining air duct reference information corresponding to the actual electrical parameter information from an air duct basic database; performing interpolation processing based on the air duct reference information and the actual electrical parameter information to obtain a current damper value of the range hood; and determining the air duct diagnosis result based on the current damper value.

[0007] The embodiment of the present invention only needs to collect the actual electrical parameter information of the fan during operation to determine the air duct diagnosis result, and there is no need to set sensors in the air duct to collect air duct information. Therefore, it saves the arrangement of relevant sensors in the air duct of the range hood, reduces the complexity of the product structure, makes the structural design simpler, and reduces the product cost.

[0008] In some embodiments, the obtaining of actual electrical parameter information of the fan of the range hood during operation includes:

[0009] Monitor the speed and current of the fan during operation; if it is monitored that the speed of the fan during operation meets the first stability condition, obtain the current actual speed of the fan; if it is monitored that the current of the fan during operation meets the second stability condition, obtain the current actual current of the fan.

[0010] The embodiment of the present invention uses the stable rotation speed and the stable current of the fan as the actual electrical parameter information for determining the wind duct diagnosis result. Therefore, there is no need to set up a more complicated parameter detection device, making the data acquisition process simple.

[0011] In some embodiments, obtaining the duct reference information corresponding to the actual electrical parameter information from the duct basic database includes: obtaining reference speed data corresponding to the current actual speed and reference damper data corresponding to the current actual current from the duct basic database.

[0012] By acquiring the air duct reference information from the air duct basic database, it is possible to collect the air duct data in real time without relying on sensors arranged in the air duct of the range hood, thereby making the structural design of the range hood simpler.

[0013] In some embodiments, the air duct reference information and the actual electrical parameter information are interpolated to obtain the current damper value of the range hood, including: performing a first interpolation process on the current actual speed, the reference speed data, and the reference current data according to an air performance relationship between the reference speed data and the reference current data to obtain current calculation data corresponding to the current actual current; performing a second interpolation process on the current calculation data, the reference damper data, and the current actual current to obtain the current damper value.

[0014] Through multiple interpolation processes, it is possible to determine the current damper value for diagnosing the condition of the air duct by relying on a software algorithm without installing a sensor in the air duct.

[0015] In some embodiments, the current actual speed, the reference speed data, and the reference current data are subjected to a first interpolation process based on an air performance relationship between the reference speed data and the reference current data to obtain current calculation data corresponding to the current actual current, including: performing a first interpolation process on the current actual speed and the reference speed data based on an air performance relationship between the reference speed data and a first group of reference currents corresponding to a first damper opening to obtain a first current calculation result corresponding to the current actual current; performing a first interpolation process on the current actual speed and the reference speed data based on an air performance relationship between the reference speed data and a second group of reference currents corresponding to a second damper opening to obtain a second current calculation result corresponding to the current actual current; wherein the second damper opening is smaller than the first damper opening.

[0016] The air performance relationship and interpolation calculation are combined to determine the current calculation data required to calculate the current air door value.

[0017] In some embodiments, determining the air duct diagnosis result based on the current air valve value includes: comparing the current air valve value with a preset air valve threshold range; if the current air valve value is within the air valve threshold range, determining that the air duct of the range hood is normal; otherwise, determining that the air duct of the range hood is abnormal.

[0018] By comparing the current air damper value with the air damper threshold range, a quick determination of whether the air duct of the range hood is abnormal is achieved without manual troubleshooting.

[0019] In some embodiments, determining whether the air duct of the range hood is abnormal includes: if the current damper value is greater than the upper limit damper value of the damper threshold interval, determining that the air duct of the range hood is in a blocked state; if the current damper value is less than the lower limit damper value of the damper threshold interval, determining that the air duct and the damper of the range hood are in a disconnected state.

[0020] In some embodiments, the method further includes: determining the damper threshold range in advance based on air duct experimental data of the range hood and networked big data.

[0021] The rationality of setting the damper threshold range is improved, so as to more accurately judge the duct installation effect.

[0022] In some embodiments, after determining the air duct diagnosis result of the range hood based on the actual electrical parameter information, the method further includes: sending the air duct diagnosis result to a terminal device that has a communication connection with the range hood, so as to display the air duct diagnosis result on the terminal device, and / or displaying the air duct diagnosis result on the human-computer interaction interface of the range hood.

[0023] It allows users and installers to know the air duct diagnosis results after the range hood is installed more intuitively and quickly, making it easier for users and installers to quickly discover and improve problems.

[0024] In a second aspect, an embodiment of the present invention provides a range hood detection device, comprising: an instruction response unit, for responding to an air duct diagnosis instruction for a range hood, to control the operation of a fan of the range hood, the range hood being currently installed at a target position; an information acquisition unit, for acquiring actual electrical parameter information of the fan of the range hood during operation; and an air duct diagnosis unit, for determining, based on the actual electrical parameter information, an air duct diagnosis result when the range hood is installed at the target position.

[0025] The embodiment of the present invention controls the operation of the installed range hood through air duct diagnostic instructions to obtain actual electrical parameter information of the fan during operation, and uses the actual electrical parameter information to diagnose the air duct condition, so as to be able to automatically diagnose the air duct effect of the range hood after installation with one click, thereby achieving convenient and rapid diagnosis of the air duct condition, thereby facilitating users and installers to quickly troubleshoot air duct problems, and further, helping to improve the installation efficiency of the range hood, and ensuring the smoking and exhaust effects of the range hood after installation.

[0026] In a third aspect, an embodiment of the present invention provides a range hood, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method described in any embodiment of the first aspect when executing the program.

[0027] The embodiment of the present invention controls the operation of the installed range hood through air duct diagnostic instructions to obtain actual electrical parameter information of the fan during operation, and uses the actual electrical parameter information to diagnose the air duct condition, thereby being able to automatically diagnose the air duct effect of the range hood after installation with one click, thereby achieving convenient and rapid diagnosis of air duct problems, facilitating users and installers to quickly troubleshoot air duct problems, and further, helping to improve the installation efficiency of the range hood, and also helping to ensure the smoking and exhaust effects of the range hood after installation.

[0028] In some embodiments, the processor includes an upper computer control module and a lower computer control module; the upper computer control module is used to obtain an air duct diagnosis instruction for the range hood, and send an operation control instruction to the lower computer control module according to the air duct diagnosis instruction; the lower computer control module is used to control the operation of the fan according to the operation control instruction, and receive the actual electrical parameter information of the fan during operation; according to the actual electrical parameter information, determine the air duct diagnosis result when the range hood is installed at the target position, and feed back the air duct diagnosis result to the upper computer control module. Convenient and rapid diagnosis of air duct conditions is achieved.

[0029] In some embodiments, the host computer control module is further used to: display the air duct diagnosis result on the human-computer interaction interface of the range hood, so as to more intuitively display the air duct diagnosis result to the user.

[0030] In some embodiments, the range hood further includes: a communication module, configured to send the air duct diagnosis result to a terminal device, so as to display the air duct diagnosis result on the terminal device, thereby more intuitively displaying the air duct diagnosis result to a user. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A flow chart of a range hood detection method according to an embodiment of the present invention is shown;

[0033] Figure 2 An implementation of a range hood detection method in an embodiment of the present invention is shown;

[0034] Figure 3 A schematic diagram of the control structure of a range hood in an embodiment of the present invention is shown;

[0035] Figure 4 A functional module diagram of a range hood detection device in an embodiment of the present invention is shown;

[0036] Figure 5 The schematic diagram of the structure of the range hood in the embodiment of the present invention is shown. DETAILED DESCRIPTION

[0037] Since the related technology cannot diagnose the effect of the smoke extractor after installation in the user's home, it cannot guarantee that the installation effect can achieve the best smoking effect. The embodiment of the present invention provides a range hood detection method, device and range hood, which uses the actual electrical parameter information of the fan of the range hood during operation to determine the air duct diagnosis result of the range hood.

[0038] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] Hereinafter, the range hood detection method provided by the embodiment of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

[0041] After the range hood is installed, there may be problems such as the air duct of the range hood being blocked and the air duct being disconnected from the damper, which may affect the smoking and exhausting effects of the range hood. Therefore, an embodiment of the present invention provides a range hood detection method to detect the air duct condition of the range hood after installation without disassembling the range hood and the air duct. Figure 1 As shown, the range hood detection method provided by the embodiment of the present invention comprises the following steps:

[0042] S101 . In response to an air duct diagnosis instruction for a range hood, controlling the operation of a fan of the range hood, wherein the range hood is currently installed at a target position.

[0043] In some embodiments, the air duct diagnostic instruction may be generated by the range hood, specifically, based on the user's diagnostic trigger operation on the human-computer interaction interface of the range hood. The fan is controlled to start running based on the generated air duct diagnostic instruction. The air duct diagnostic instruction may also be generated by an external terminal device, for example, generated by a terminal device installed with a range hood diagnostic APP or applet, and the terminal device may be a smart phone, a computer, etc. The terminal device generates an air duct diagnostic instruction based on the user's diagnostic trigger operation, and sends it to the range hood through the communication link established between the terminal device and the range hood. The range hood responds to the air duct diagnostic instruction received from the outside and controls the fan of the range hood to start running.

[0044] It is also possible to generate an air duct diagnosis instruction for the range hood during normal use of the range hood, according to a preset cycle or each time the fan of the range hood is started.

[0045] It is understandable that the target location may be any location where a range hood needs to be installed for extracting oil fumes, and the air duct of the range hood after installation is connected to the flue of the target location through the damper.

[0046] S102: Acquire actual electrical parameter information of the range hood fan during operation.

[0047] In the embodiment of the present invention, the actual electrical parameter information comes from the feedback of the fan. After the fan starts running, the speed and current during the operation will be fed back in real time. The actual electrical parameter information fed back by the fan includes: the stable speed of the fan and the stable current of the fan.

[0048] In one implementation, in order to obtain the stable speed and the stable current of the fan, the speed and current of the fan during operation can be monitored; if it is monitored that the speed of the fan during operation meets the first stability condition, the current actual speed of the fan is obtained, and the current actual speed is recorded as the stable speed of the fan. If it is monitored that the current of the fan during operation meets the second stability condition, the current actual current of the fan is obtained, and the current actual current is recorded as the stable current of the fan.

[0049] It is understandable that the first stable condition can be set as: the speed change amplitude of the fan is less than the first preset amplitude value. The second stable condition can be set as: the current change amplitude of the fan is less than the second preset amplitude value.

[0050] Different from the above-mentioned implementation mode, in order to obtain the stable speed and stable current of the fan, the following implementation mode can also be adopted: monitor the running time of the fan, and when the running time of the fan startup operation reaches a first preset time, collect the current actual speed of the fan and record it as the stable speed of the fan; when the running time of the fan startup operation reaches a second preset time, collect the current actual current of the fan and record it as the stable current of the fan.

[0051] It is understandable that the first preset time is greater than or equal to the interval time from the fan starting to reaching a stable speed. The second preset time is also greater than or equal to the interval time from the fan starting to current stabilization. The first preset time and the second preset time can be set to the same time. The specific values ​​of the first preset time and the second preset time are related to the fan performance of the range hood. Therefore, the specific values ​​are not limited here. The first preset time and the second preset time can be determined based on the test data during the product development period of the range hood.

[0052] S103: Determine the air duct diagnosis result when the range hood is at the target position according to the actual electrical parameter information.

[0053] In step S103, the current damper value of the range hood is obtained according to the actual electrical parameter information fed back by the fan and the air duct reference information corresponding to the actual electrical parameter information; and the air duct diagnosis result of the range hood is determined according to the current damper value.

[0054] Specifically, according to different current air damper values, for the smoke exhaust hood installed at the target location, the air duct diagnosis result determined is any one of the following: 1. The air duct is normal; 2. The air duct is abnormal.

[0055] More specifically, the air duct abnormality further includes the following two different abnormalities: 2(1): the air duct and the damper are not connected; 2(2): the air duct is blocked. Therefore, according to the current damper value, the air duct diagnosis result determined is any one of the following: the air duct is normal, the air duct and the damper are not connected, and the air duct is blocked.

[0056] Specifically, the air duct reference information corresponding to the actual electrical parameter information is obtained, and interpolation processing is performed based on the air duct reference information and the actual electrical parameter information to obtain the current air door value of the range hood.

[0057] In an embodiment of the present invention, obtaining the duct reference information corresponding to the actual electrical parameter information includes: obtaining reference speed data corresponding to the current actual speed and reference damper data corresponding to the current actual current from the duct basic database.

[0058] In the air duct basic database, a variety of reference speeds can be stored in a data table format, and each reference speed corresponds to a reference current and a reference damper value at different damper openings.

[0059] Specifically, the fan operates at various reference speeds in each simulated air duct and collects information. Specifically, the working current and air duct information corresponding to each reference speed of the fan (for example, the air duct information includes: air volume, air pressure, etc.) are collected, and data analysis is performed based on each speed and the corresponding working current and air duct information to determine the reference current and reference damper value corresponding to each reference speed, thereby establishing an air duct basic database. Each reference speed has a corresponding reference current and reference damper value at multiple damper openings.

[0060] Specifically, the reference data table format in the air duct basic database can be shown in Table 1 below:

[0061] Table 1. Reference data sheet

[0062]

[0063] It should be noted that the reference damper value corresponding to each reference speed at its corresponding damper opening is used as a value representing the degree of blockage of the air duct of the range hood.

[0064] Specifically, it can be expressed by the air duct resistance calculated from the air volume and air pressure. It can also be expressed by a percentage blockage value, where 100% represents complete blockage of the air duct, and the larger the percentage value, the more serious the blockage of the air duct; conversely, the smaller the blockage of the air duct.

[0065] In an embodiment of the present invention, reference speed data corresponding to the current actual speed is obtained, specifically including: a first reference speed and a second reference speed, the current actual speed is between the first reference speed and the second reference speed, the first reference speed is the closest speed that is higher than the current actual speed, and the second reference speed is the closest speed that is lower than the current actual speed.

[0066] For example, if the current actual speed is 1250r / min, by looking up the table, the first reference speed can be obtained as 1300r / min and the second reference speed can be obtained as 1200r / min. If the current actual speed is 1010r / min, by looking up the table, the first reference speed can be obtained as 1100r / min and the second reference speed can be obtained as 1000r / min.

[0067] Similarly, the reference damper data corresponding to the current actual current obtained from the air duct basic database includes: a first reference damper value corresponding to the first reference speed and the current actual current, and a second reference damper value corresponding to the second reference speed and the current actual current.

[0068] Continuing to refer to the above table for example, under the premise that the first reference speed is 1300r / min and the second reference speed is 1200r / min, if the current actual current is between the reference currents A3 and A4, by looking up the table, it can be determined that the first reference damper value (higher damper value) is M4%, and the second reference damper value (lower damper value) is M3%. If the current actual current is between the reference currents A7 and A8 shown in Table 1, by looking up the table, it can be determined that the first reference damper value (higher damper value) is M8%, and the second reference damper value (lower damper value) is M7%.

[0069] After obtaining the reference speed data, a first interpolation process is performed on the current actual speed, the reference speed data and the reference current data according to the air performance relationship between the reference speed data and the reference current data to obtain current calculation data corresponding to the current actual current.

[0070] Among them, the current calculation data obtained by the first interpolation processing includes: a first current calculation result and a second current calculation result, the first current calculation result is the current corresponding to the current actual speed at the first damper opening, and the second current calculation result is the current corresponding to the current actual speed at the second damper opening.

[0071] Specifically, based on the air performance relationship between the reference speed data and the first set of reference currents, a first interpolation process is performed on the current actual speed and the reference speed data to obtain a first current calculation result corresponding to the current actual current, wherein the first set of reference currents is the reference current corresponding to the reference speed data at the first damper opening.

[0072] Specifically, based on the air performance relationship between the reference speed data and the second set of reference currents, a first interpolation process is performed on the current actual speed and the reference speed data to obtain a second current calculation result corresponding to the current actual current, wherein the second set of reference currents is the reference current corresponding to the reference speed data at the second damper opening.

[0073] In the embodiment of the present invention, the air performance relationship refers to the proportional relationship between the current and the rotation speed of the fan.

[0074] Specifically, the first reference speed n1 and the second reference speed n2 satisfy the air performance relationship with the first reference current I1 and I2 corresponding to the first damper opening. Specifically, the proportional relationship between the first reference speed n1 and the second reference speed n2 and the corresponding first reference current I1 and I2 can be expressed as follows:

[0075]

[0076] Among them, I1 is the reference current corresponding to the first reference speed n1 at the first damper opening; I2 is the reference current corresponding to the second reference speed n2 at the first damper opening.

[0077] Based on the air performance relationship between the first reference speed n1, the second reference speed n2 and the corresponding first reference currents I1 and I2, the following first interpolation formula is combined to calculate the first current calculation result I1′ corresponding to the current actual speed at the first air door opening:

[0078]

[0079] Among them, n3 is the current actual speed of the fan.

[0080] Similarly, the first reference speed n1 and the second reference speed n2 also satisfy the air performance relationship with the second group of reference currents I3 and I4 corresponding to the second damper opening, wherein the second damper opening is greater than the first damper opening.

[0081]

[0082] Among them, I3 is the reference current corresponding to the first reference speed n1 at the second damper opening, and I4 is the reference current corresponding to the second reference speed n2 at the second damper opening.

[0083] Based on the air performance relationship between the first reference speed n1, the second reference speed n2 and the second reference current I3, I4, the following first interpolation formula can be used to calculate the second current calculation result I′2 corresponding to the current actual speed n3 at the second air door opening:

[0084]

[0085] After obtaining the first current calculation result I1′ and the second current calculation result I2′, the current damper value f3 can be calculated using the second interpolation formula based on the first reference damper value and the second reference damper value obtained by table lookup, and the first current calculation result I1′ and the second current calculation result I2′ obtained by the above calculation:

[0086]

[0087] Among them, f1 is the first reference damper value (larger), f2 is the second reference damper value (smaller), I5 is the current actual current, I1′ is the larger current of the first current calculation result and the second current calculation result, and I2′ is the smaller current of the first current calculation result and the second current calculation result.

[0088] Below, reference Figure 2 As shown, an implementation method of how to obtain the current air damper value in an embodiment of the present invention is given:

[0089] First, control the range hood fan to start.

[0090] Next, after the fan of the range hood is started, the fan speed of the range hood is monitored to see whether it satisfies a first stable condition; until the first stable condition is satisfied, the current actual speed of the fan is recorded.

[0091] Next, the table is looked up to obtain the first reference speed and the second reference speed corresponding to the current actual speed. Next, the fan current of the range hood is monitored to see whether it meets the second stability condition; until the second stability condition is met, the current actual current of the fan is recorded;

[0092] Next, according to the reference speed data (i.e., the first reference speed and the second reference speed) and the current actual current, the reference damper data is queried;

[0093] Next, the first interpolation formula is used to obtain current calculation data according to the current actual speed, the first reference speed, the second reference speed and the corresponding reference current data.

[0094] Next, the second interpolation formula is used to obtain the current damper value according to the current calculation data, the current actual current and the reference damper data.

[0095] After the current air damper value is calculated, the current air damper value is compared with a preset air damper threshold range to determine whether the air duct of the range hood is normal.

[0096] In some embodiments, the damper threshold interval is a numerical interval consisting of a lower damper value and an upper damper value. If the current damper value is within the preset damper threshold interval, the air duct of the range hood is determined to be normal; otherwise, the air duct of the range hood is determined to be abnormal. Thus, a relatively simple diagnosis of the condition of the air duct of the range hood can be performed. If the air duct is normal, the air duct of the range hood can be used normally. If the air duct of the range hood is abnormal, it indicates that the cause of the blockage of the air duct needs to be checked and the problem needs to be improved.

[0097] For example, the lower limit damper value of the preset damper threshold range can be set to 30%, and the upper limit damper value can be set to 80%. That is, if the current damper value is within the range of 30% to 80%, the air duct of the range hood is determined to be normal; otherwise, the air duct of the range hood is determined to be abnormal.

[0098] Different from the above embodiment, when determining that the air duct of the range hood is abnormal, if the current air damper value is greater than the upper limit air damper value of the air damper threshold interval, the air duct of the range hood is determined to be blocked; if the current air damper value is less than the lower limit air damper value of the air damper threshold interval, the air duct of the range hood is determined to be disconnected from the air damper. This allows more accurate identification of what type of abnormality has occurred in the air duct of the range hood, so that installers or users can troubleshoot and improve the air duct installation problem.

[0099] That is, if the current damper value is within the range of 30% to 80%, the air duct of the range hood is determined to be normal; if the current damper value is less than 30%, it is determined that the air duct and the damper are not connected; if the current damper value is greater than 80%, it is determined that the air duct of the range hood is blocked.

[0100] In the embodiment of the present invention, the damper threshold interval may be determined based solely on the wind duct experimental data collected during the product development period.

[0101] Of course, since the actual use environment after the range hood is installed is different from the experimental environment, in order to further improve the accuracy of the damper threshold range, the damper threshold range can be determined based on the air duct experimental data collected during the product development period and the networked big data. Specifically, the original damper threshold range is obtained based on the air duct experimental data, and the original damper threshold range is modified based on the networked big data to obtain the damper threshold range for comparison with the current damper value. Among them, the networked big data can be the air duct diagnostic data of other range hoods obtained by the range hood communicating with the cloud.

[0102] In some embodiments, the air duct diagnosis result can be sent to a terminal device that has established a communication connection with the range hood, so as to display the air duct diagnosis result on the terminal device, and / or display the air duct diagnosis result on the human-computer interaction interface of the range hood. In this way, the air duct diagnosis result is fed back to the user and the installer, which is convenient for the installer and the user to view the air duct diagnosis result, so as to know the air duct installation effect, the smoke exhaust and smoking effect of the air duct more directly. If the installed air duct has a good effect, the user's range hood air duct can continue to be used normally. If it is diagnosed that the air duct is relatively blocked, the cause of the blockage of the installed air duct can be investigated and improved.

[0103] The range hood detection method provided by the embodiment of the present invention can be applied to Figure 3 The control structure diagram of the range hood 10 is shown in FIG. Figure 3 As shown, the range hood 10 includes: a host computer control module 11 , a slave computer control module 12 , a fan 13 and a communication module 14 .

[0104] Among them, the upper computer control module 11 and the lower computer control module 12 communicate with each other through a protocol. The upper computer control module 11 is used to communicate with the outside through the network module 14, for example, it can realize human-computer interaction, and it can also communicate with terminal devices, and send operation control instructions to the lower computer control module 12. The lower computer control module 12 controls the operation of the fan 13, and receives the actual electrical parameter information of the fan during operation fed back by the fan. The fan 13 is connected to the air duct, and the fan 13 starts to run under the control of the lower computer control module 12, and feeds back the actual electrical parameter information of the fan 13 during operation to the lower computer control module 12. The lower computer control module 12 obtains the air duct reference information corresponding to the actual electrical parameter information from the pre-stored air duct basic database according to the actual electrical parameter information fed back by the fan, and determines the air duct diagnosis result of the range hood 10 at the target position according to the actual electrical parameter information and the corresponding air duct reference information.

[0105] The range hood detection method provided by the embodiment of the present invention can be used to detect the installation effect of the air duct during the installation process of the range hood. When the installer performs on-site installation, the installation effect of the air duct of the range hood can be diagnosed by turning on the automatic diagnosis of the air duct of the range hood. The air duct diagnosis results are fed back to the installer and the user through a closed-loop feedback mechanism. If the air duct is normal, it indicates that the air duct installation effect is good and can be used normally. If the air duct is blocked, it indicates that the cause of the blockage of the air duct needs to be investigated and the problem needs to be improved. After each investigation, the diagnosis can be repeated until the air duct of the range hood can be used normally, thereby ensuring the installation effect of the air duct of the range hood.

[0106] The range hood detection method provided in the embodiment of the present invention can also be used to detect the condition of the range hood's air duct after the range hood has been used for a period of time, and the air duct diagnosis result is fed back to the user through a closed-loop feedback mechanism. If the air duct is diagnosed to be normal, the range hood air duct can continue to be used normally. If the air duct is diagnosed to be blocked, the cause of the blockage can be investigated and improved.

[0107] In a second aspect, based on the same inventive concept, an embodiment of the present invention provides a range hood detection device, comprising:

[0108] The command response unit 401 is used to control the operation of the fan of the range hood in response to the air duct diagnosis command for the range hood, and the range hood is currently installed at the target position;

[0109] The information acquisition unit 402 is used to acquire the actual electrical parameter information of the fan of the range hood during operation;

[0110] The air duct diagnosis unit 403 is used to determine the air duct diagnosis result when the range hood is installed at the target position according to the actual electrical parameter information.

[0111] The embodiment of the present invention controls the operation of the installed range hood through air duct diagnostic instructions to obtain actual electrical parameter information of the fan during operation, and uses the actual electrical parameter information to diagnose the air duct condition, so as to be able to automatically diagnose the air duct effect of the range hood after installation with one click, thereby achieving convenient and rapid diagnosis of the air duct condition, thereby facilitating users and installers to quickly troubleshoot air duct problems, and further, helping to improve the installation efficiency of the range hood, and ensuring the smoking and exhaust effects of the range hood after installation.

[0112] In a third aspect, an embodiment of the present invention provides a range hood, comprising a memory 504, a processor 502, and a computer program stored in the memory 504 and executable on the processor 502, wherein the processor 502 implements the aforementioned range hood detection method when executing the computer program 502.

[0113] Among them, Figure 5 In the embodiment of the present invention, a bus architecture (represented by bus 500) is shown, which may include any number of interconnected buses and bridges, and bus 500 links various circuits including one or more processors represented by processor 502 and memory represented by memory 504. Bus 500 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 505 provides an interface between bus 500 and receiver 501 and transmitter 503. Receiver 501 and transmitter 503 may be the same element, namely a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 502 is responsible for managing bus 500 and general processing, while memory 504 may be used to store data used by processor 502 when performing operations.

[0114] The embodiment of the present invention controls the operation of the installed range hood through air duct diagnostic instructions to obtain actual electrical parameter information of the fan during operation, and uses the actual electrical parameter information to diagnose the air duct condition, so as to be able to automatically diagnose the air duct effect of the range hood after installation with one click, thereby achieving convenient and rapid diagnosis of the air duct condition, thereby facilitating users and installers to quickly troubleshoot air duct problems, and further, helping to improve the installation efficiency of the range hood, and ensuring the smoking and exhaust effects of the range hood after installation.

[0115] In some embodiments, reference Figure 3As shown, the processor 502 includes an upper computer control module 11 and a lower computer control module 12; the upper computer control module 11 is used to obtain the air duct diagnosis instruction for the range hood, and send the operation control instruction to the lower computer control module 1 according to the air duct diagnosis instruction; the lower computer control module 12 is used to control the operation of the fan 13 according to the operation control instruction, and receive the actual electrical parameter information of the fan 13 during the operation; according to the actual electrical parameter information, determine the air duct diagnosis result when the range hood is installed at the target position, and feed back the air duct diagnosis result to the upper computer control module 11.

[0116] In some implementations, the host computer control module 11 is further used to: display the air duct diagnosis result on the human-computer interaction interface of the range hood.

[0117] In some embodiments, the range hood further includes a communication module 14 for sending the air duct diagnosis result to a terminal device so as to display the air duct diagnosis result on the terminal device.

[0118] It can be understood that more implementation details of the range hood in the embodiment of the present invention can refer to the aforementioned range hood detection method embodiment, and the implementation details of other structures can refer to related technologies, which will not be repeated here.

[0119] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on a computer-readable medium or transmitted via a computer-readable medium. Other examples and implementations are within the scope and spirit of the present invention and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these. In addition, each functional unit may be integrated into a processing unit, each unit may exist physically separately, or two or more units may be integrated into one unit.

[0120] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0121] The units described as separate components may or may not be physically separated, and the components of the control device may or may not be physical units, that is, they may be located in one place or distributed in multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0122] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0123] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A range hood detection method, characterized in that: include: In response to an air duct diagnosis instruction for a range hood, controlling the operation of a fan of the range hood, the range hood being currently installed at a target position; Acquiring actual electrical parameter information of the fan of the range hood during operation, wherein the actual electrical parameter information includes a current actual rotation speed and a current actual current of the fan; Determining, according to the actual electrical parameter information, an air duct diagnosis result when the range hood is installed at the target position, comprising: Acquiring the wind duct reference information corresponding to the actual electrical parameter information, including: acquiring reference speed data corresponding to the current actual speed and reference damper data corresponding to the current actual current from a wind duct basic database, wherein the reference speed data includes a first reference speed and a second reference speed; Interpolation processing is performed according to the air duct reference information and the actual electrical parameter information to obtain the current air damper value of the range hood, wherein the air duct reference information includes reference speed data, reference current data and reference air damper data, and according to the air performance relationship between the reference speed data and the reference current data, a first interpolation processing is performed on the current actual speed, the reference speed data and the reference current data to obtain current calculation data corresponding to the current actual current; a second interpolation processing is performed according to the current calculation data, the reference air damper data and the current actual current to obtain the current air damper value, including: based on the first reference The first interpolation processing is performed based on the air performance relationship between the speed, the second reference speed and the first group of reference currents to calculate the first current calculation result of the current actual speed at the first damper opening; the first interpolation processing is performed based on the air performance relationship between the first reference speed, the second reference speed and the second group of reference currents to calculate the second current calculation result of the current actual speed at the second damper opening, and the second damper opening is greater than the first damper opening; the second interpolation processing is performed based on the first reference damper value and the second reference damper value obtained by table lookup, as well as the first current calculation result and the second current calculation result to calculate the current damper value; The air duct diagnosis result is determined according to the current air valve value.

2. The method according to claim 1, characterized in that The obtaining of actual electrical parameter information of the fan of the range hood during operation includes: monitoring the speed and current of the fan during operation; If it is monitored that the rotation speed of the fan during operation meets the first stability condition, obtaining the current actual rotation speed of the fan; If it is monitored that the current of the fan during operation meets the second stability condition, the current actual current of the fan is obtained.

3. The method according to claim 1, characterized in that The step of determining the air duct diagnosis result according to the current air valve value includes: Comparing the current throttle value with a preset throttle threshold range; If the current damper value is within the damper threshold range, it is determined that the air duct of the range hood is normal; otherwise, it is determined that the air duct of the range hood is abnormal.

4. The method according to claim 3, characterized in that The determining whether the air duct of the range hood is abnormal includes: If the current air damper value is greater than the upper limit air damper value of the air damper threshold interval, it is determined that the air duct of the range hood is in a blocked state; If the current damper value is less than the lower damper value of the damper threshold interval, it is determined that the air duct and the damper of the range hood are in a disconnected state.

5. The method according to claim 3, characterized in that Also includes: The damper threshold range is determined in advance based on the air duct experimental data of the range hood and the networked big data.

6. The method according to any one of claims 1 to 5, characterized in that: After determining the air duct diagnosis result of the range hood according to the actual electrical parameter information, the method further includes: Sending the air duct diagnosis result to a terminal device that has established a communication connection with the range hood, so as to display the air duct diagnosis result on the terminal device, and / or The air duct diagnosis result is displayed on the human-computer interaction interface of the range hood.

7. A range hood detection device, characterized in that: include: a command response unit, for controlling the operation of a fan of a range hood in response to an air duct diagnosis command for the range hood, the range hood being currently installed at a target position; An information acquisition unit, used to acquire actual electrical parameter information of the fan of the range hood during operation, wherein the actual electrical parameter information includes a current actual rotation speed and a current actual current of the fan; The air duct diagnosis unit is used to determine the air duct diagnosis result when the range hood is installed at the target position according to the actual electrical parameter information, including: Acquiring the wind duct reference information corresponding to the actual electrical parameter information, including: acquiring reference speed data corresponding to the current actual speed and reference damper data corresponding to the current actual current from a wind duct basic database, wherein the reference speed data includes a first reference speed and a second reference speed; Interpolation processing is performed according to the air duct reference information and the actual electrical parameter information to obtain the current air damper value of the range hood, wherein the air duct reference information includes reference speed data, reference current data and reference air damper data, and according to the air performance relationship between the reference speed data and the reference current data, a first interpolation processing is performed on the current actual speed, the reference speed data and the reference current data to obtain current calculation data corresponding to the current actual current; a second interpolation processing is performed according to the current calculation data, the reference air damper data and the current actual current to obtain the current air damper value, including: based on the first reference The first interpolation processing is performed based on the air performance relationship between the speed, the second reference speed and the first group of reference currents to calculate the first current calculation result of the current actual speed at the first damper opening; the first interpolation processing is performed based on the air performance relationship between the first reference speed, the second reference speed and the second group of reference currents to calculate the second current calculation result of the current actual speed at the second damper opening, and the second damper opening is greater than the first damper opening; the second interpolation processing is performed based on the first reference damper value and the second reference damper value obtained by table lookup, as well as the first current calculation result and the second current calculation result to calculate the current damper value; The air duct diagnosis result is determined according to the current air valve value.

8. A range hood, characterized in that: The invention comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the range hood detection method according to any one of claims 1 to 7 is implemented.

9. The range hood according to claim 8, characterized in that: The processor includes an upper computer control module and a lower computer control module; The upper computer control module is used to obtain an air duct diagnosis instruction for the range hood, and send an operation control instruction to the lower computer control module according to the air duct diagnosis instruction; The lower computer control module is used to control the operation of the fan according to the operation control instruction, and receive actual electrical parameter information of the fan during operation; According to the actual electrical parameter information, an air duct diagnosis result when the range hood is installed at the target position is determined, and the air duct diagnosis result is fed back to the host computer control module.

10. The range hood according to claim 9, characterized in that: The host computer control module is also used to display the air duct diagnosis result on the human-computer interaction interface of the range hood.

11. The range hood according to claim 9 or 10, characterized in that: Also includes: The communication module is used to send the air duct diagnosis result to the terminal device so as to display the air duct diagnosis result on the terminal device.

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