Method and device for monitoring dirt and blockage of household electrical appliances, and household electrical appliances

Abstract

The present application discloses a method, device and household appliance for monitoring dirty blockage of household appliances, wherein the household appliance is provided with a fan, and the method comprises: obtaining actual electric control parameters for the fan, the actual electric control parameters are used to adjust the output set speed of the fan; based on the actual electric control parameters, determining actual dirty blockage reference data, the actual dirty blockage reference data is used to characterize the actual dirty blockage degree in the household appliance. The technical solution provided by the present application can improve the monitoring efficiency of dirty blockage status in household appliances.

Description

Technical Field

[0001] The present application belongs to the technical field of household appliance data processing, and in particular, relates to a method and device for monitoring dirt and blockage of household appliances, and the household appliance. Background Art

[0002] At present, fans are generally installed in household appliances, such as air conditioners, refrigerators, range hoods and other household appliances. However, household appliances that are used for a long time are prone to dirt and blockage, which will affect the performance of the household appliances and thus affect the user's comfort. Therefore, it is necessary to monitor the dirt and blockage of household appliances. The existing technology mainly monitors the dirt and blockage of household appliances by adding detection sensors. However, this method has low monitoring efficiency. Based on this, how to improve the monitoring efficiency of the dirty and blocked state in household appliances is a technical problem that needs to be solved urgently. Summary of the invention

[0003] The embodiments of the present application provide a method, device and household appliance for monitoring dirt and blockage of household appliances, thereby improving the monitoring efficiency of the dirt and blockage status of household appliances at least to a certain extent.

[0004] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0005] According to a first aspect of an embodiment of the present application, a method for monitoring dirt and blockage of a household appliance is provided, wherein a fan is provided in the household appliance, and the method comprises:

[0006] Acquiring actual electrical control parameters for the fan, wherein the actual electrical control parameters are used to adjust a set output speed of the fan;

[0007] Based on the actual electric control parameters, actual dirtiness and blockage reference data are determined, where the actual dirtiness and blockage reference data are used to characterize the actual degree of dirtiness and blockage in the household appliance.

[0008] In some embodiments of the present application, based on the aforementioned scheme, determining the actual dirty and clogging reference data based on the actual electrical control parameters includes: obtaining the corresponding relationship between the dirty and clogging reference data and the electrical control parameters at the set speed output by the fan; based on the corresponding relationship, determining the actual dirty and clogging reference data corresponding to the actual electrical control parameters.

[0009] In some embodiments of the present application, based on the aforementioned scheme, the dirty blockage reference data includes a dirty blockage value, and the corresponding relationship is a linear corresponding relationship between the dirty blockage value and the electrical control parameter at the set speed output by the fan, and the actual dirty blockage reference data corresponding to the actual electrical control parameter is determined based on the corresponding relationship, including: determining the actual dirty blockage value corresponding to the actual electrical control parameter based on the linear corresponding relationship.

[0010] In some embodiments of the present application, based on the aforementioned scheme, the dirty blockage reference data includes multiple dirty blockage labels, and the corresponding relationship is the corresponding relationship between the multiple dirty blockage labels and the multiple electric control parameter ranges under the set speed output by the fan, and the actual dirty blockage reference data corresponding to the actual electric control parameter is determined based on the corresponding relationship, including: determining the actual electric control parameter range to which the actual electric control parameter belongs; based on the corresponding relationship between the multiple dirty blockage labels and the multiple electric control parameter ranges under the set speed output by the fan, determining the actual dirty blockage label corresponding to the actual electric control parameter range.

[0011] In some embodiments of the present application, based on the above solution, the plurality of dirty and blocked labels include a serious dirty and blocked label, a slight dirty and blocked label, and a no dirty and blocked label.

[0012] In some embodiments of the present application, based on the aforementioned scheme, the fan includes a DC fan, the electrical control parameters include a VSP regulation voltage for the DC fan, and the actual dirty blockage label corresponding to the actual electrical control parameter range is determined based on the correspondence between the multiple dirty blockage labels and the multiple electrical control parameter ranges at the set speed output by the fan, including: if the actual VSP regulation voltage of the DC fan is less than the first VSP regulation voltage, then the actual dirty blockage label of the household appliance is determined to be a severe dirty blockage label; if the actual VSP regulation voltage of the DC fan is greater than or equal to the first VSP regulation voltage and less than the second VSP regulation voltage, then the dirty blockage label of the household appliance is determined to be a slight dirty blockage label; if the actual VSP regulation voltage of the DC fan is greater than or equal to the second VSP regulation voltage, then the actual dirty blockage label of the household appliance is determined to be a no dirty blockage label.

[0013] In some embodiments of the present application, based on the aforementioned scheme, the fan includes an AC fan, the electrical control parameters include a chopping period for adjusting the voltage of the AC fan, and the actual dirty and blocked label corresponding to the actual electrical control parameter range is determined based on the correspondence between the multiple dirty and blocked labels and the multiple electrical control parameter ranges at the set speed output by the fan, including: if the actual chopping period of the AC fan is greater than or equal to the first chopping period, then the actual dirty and blocked label of the household appliance is determined to be a severe dirty and blocked label; if the actual chopping period of the AC fan is less than the first chopping period, and greater than or equal to the second chopping period, then the actual dirty and blocked label of the household appliance is determined to be a slight dirty and blocked label; if the actual chopping period of the AC fan is less than the second chopping period, then the actual dirty and blocked label of the household appliance is determined to be a no dirty and blocked label.

[0014] In some embodiments of the present application, based on the aforementioned solution, after determining the actual dirty and blocked reference data based on the actual electric control parameters, the method further includes: prompting the actual dirty and blocked reference data to the user.

[0015] In the embodiment of the first aspect of the present application, actual dirty and clogging reference data for characterizing the actual degree of dirty and clogging in the household appliance can be determined based on the actual electrical control parameters of the fan of the household appliance itself. Since the operation data of the existing household appliance can be directly used to analyze and judge the dirty and clogging situation, dirty and clogging detection can be quickly realized without increasing the cost, thereby improving the monitoring efficiency of the dirty and clogging state in the household appliance.

[0016] According to a second aspect of an embodiment of the present application, a device for monitoring dirt and blockage in a household appliance is provided, wherein a fan is provided in the household appliance, and the device comprises: an acquisition unit for acquiring actual electrical control parameters for the fan, wherein the actual electrical control parameters are used to adjust the set output speed of the fan; and a determination unit for determining actual dirt and blockage reference data based on the actual electrical control parameters, wherein the actual dirt and blockage reference data is used to characterize the actual degree of dirt and blockage in the household appliance.

[0017] According to a third aspect of an embodiment of the present application, a household appliance is provided, comprising one or more processors and one or more memories, wherein at least one program code is stored in the one or more memories, and the at least one program code is loaded and executed by the one or more processors to implement the method described in any embodiment of the first aspect above.

[0018] The beneficial effects of each embodiment of the second to third aspects mentioned above can refer to the beneficial effects of the embodiment of the first aspect mentioned above, and will not be repeated here.

[0019] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0021] Figure 1 A schematic diagram showing an exemplary system architecture to which the technical solution of the embodiments of the present application can be applied;

[0022] Figure 2 A flow chart showing a method for monitoring dirt and blockage of household appliances in an embodiment of the present application is shown;

[0023] Figure 3 A working principle diagram of a household appliance in an embodiment of the present application when the fan is a DC fan is shown;

[0024] Figure 4 A working principle diagram of a household appliance in an embodiment of the present application when the fan is an AC fan is shown;

[0025] Figure 5 A flow chart of a method for monitoring dirt and blockage of household electrical appliances when the fan is a DC fan in an embodiment of the present application is shown;

[0026] Figure 6 A flow chart of a method for monitoring dirt and blockage of household electrical appliances when the fan is an AC fan in an embodiment of the present application is shown;

[0027] Figure 7 A block diagram of a device for monitoring dirt and blockage of household appliances in an embodiment of the present application is shown;

[0028] Figure 8 A schematic diagram of the structure of a household appliance in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0031] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0032] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0033] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0034] Figure 1 A schematic diagram of an exemplary system architecture to which the technical solution of the embodiments of the present application can be applied is shown.

[0035] like Figure 1 As shown, the system architecture may include a home appliance 101, a network 102, and a terminal (such as a mobile phone APP) 103. The network 102 is used to provide a medium for a communication link between the home appliance 101 and the terminal 103. The network 102 may include various connection types, such as a wired communication link, a wireless communication link, and the like.

[0036] In the present application, it should be noted that the household appliances proposed in the present application may refer to household appliances with fans installed inside, such as air conditioners, refrigerators, range hoods and other household appliances. In these household appliances, the outside air is sucked into the household appliances from the air inlet of the household appliances through the operation of the fan, and the outside air is expelled from the air outlet of the household appliances to realize the flow of air in the household appliances.

[0037] In order to enable those skilled in the art to better understand the implementation background of the technical solution of the present application, an indoor unit of an air conditioner will be used as an example for explanation below.

[0038] In the indoor unit of the air conditioner, there are provided a fan, a filter and an evaporator, wherein the fan operates to draw outside air into the air conditioner through the air inlet, the inhaled air is filtered by the filter and then passes through the evaporator, the air is cooled after passing through the evaporator, and then blown out to the outside through the air outlet, thereby achieving indoor cooling. However, in the indoor unit of the air conditioner that has been used for a long time, the filter and the evaporator are prone to be clogged by impurities, which leads to dirty blockage in the indoor unit of the air conditioner. The dirty blockage phenomenon will cause the air output of the air conditioner to decrease, thereby affecting the user's comfort and cooling and heating effects. Therefore, it is necessary to monitor the dirty blockage phenomenon of the indoor unit of the air conditioner, and clean the impurities in the filter and evaporator in time to eliminate the dirty blockage phenomenon.

[0039] In one embodiment of the present application, after the household appliance 101 obtains the actual electrical control parameters of the fan of the household appliance itself, the actual dirty and blocked reference data is determined based on the actual electrical control parameters, the actual electrical control parameters are used to adjust the output set speed of the fan, and the actual dirty and blocked reference data is used to characterize the actual dirty and blocked degree in the household appliance. After determining the actual dirty and blocked reference data based on the actual electrical control parameters, the actual dirty and blocked reference data can also be sent to the terminal 103 to prompt the user.

[0040] In the present application, actual dirty and clogging reference data for characterizing the actual dirty and clogging degree in the household appliance can be determined based on the actual electrical control parameters of the fan of the household appliance itself. Since the operation data of the existing household appliance can be directly used to analyze and judge the dirty and clogging situation, dirty and clogging detection can be quickly realized without increasing the cost, thereby improving the monitoring efficiency of the dirty and clogging state in the household appliance.

[0041] It should be noted that the method for monitoring dirt and blockage of household appliances provided in the embodiments of the present application can be executed by the household appliances, and accordingly, the device for monitoring dirt and blockage of household appliances is generally arranged in the household appliances.

[0042] Based on the above description, Figure 2 The dirty and blocked monitoring method of household appliances provided in the embodiment of the present application is described in detail:

[0043] See also Figure 2 , shows a flow chart of a method for monitoring dirt and blockage of a household appliance in an embodiment of the present application. The method may be performed by a device for monitoring dirt and blockage of a household appliance. A fan is provided in the household appliance. The method may include steps 220 to 240:

[0044] In step 220, actual electrical control parameters for the fan are obtained, and the actual electrical control parameters are used to adjust the set output speed of the fan.

[0045] In this application, the speed of the fan and the degree of dirtiness and blockage of the household appliance where the fan is located jointly determine the actual electric control parameters of the fan. If the speed of the fan is constant, the degree of dirtiness and blockage of the household appliance where the fan is located is different, and the actual electric control parameters of the fan are also different. The principle is that when the speed of the fan is constant, the degree of dirtiness and blockage of the household appliance where the fan is located is different, and the torque required for the fan to rotate is different, which means that the actual electric control parameters of the fan are also different.

[0046] It should be noted that since the fan is inside the home appliance, the higher the degree of dirt and blockage of the home appliance, the more closed the space formed inside the home appliance, which means that the required torque of the fan is smaller when the fan speed is constant.

[0047] In the present application, the parameter type of the actual electrical control parameter of the fan can be determined according to the specific type of the fan. Specifically, if the fan is a DC fan driven by a DC motor, the actual electrical control parameter of the fan can include a VSP adjustment voltage for the DC fan. If the fan is an AC fan driven by an AC motor, the actual electrical control parameter of the fan can include a chopping period for adjusting the voltage of the AC fan.

[0048] In order to enable those skilled in the art to better understand the control principles of DC fans and AC fans, Figure 3 and Figure 4 Explain them separately.

[0049] See also Figure 3 , shows a working principle diagram of the household appliance in an embodiment of the present application when the fan is a DC fan.

[0050] For DC fans, such as Figure 3 As shown, when the power supply voltage input to the rectifier circuit 302 is constant, the control device MCU301 further adjusts the speed of the fan by adjusting the VSP regulation voltage of the DC fan 303, and finally makes the speed of the fan reach the set speed. Among them, when the set speed of the DC fan is constant, if the required torque output by the DC fan is smaller, the VSP regulation voltage of the DC fan 303 is adjusted to be smaller, and if the required torque output by the DC fan is larger, the VSP regulation voltage of the DC fan 303 is adjusted to be larger.

[0051] It is understandable that when the fan is a DC fan, if the VSP adjustment voltage for adjusting the DC fan 303 is smaller, it means that the torque required for the DC fan output is smaller, which further means that the degree of dirtiness and blockage of the household appliance is more serious.

[0052] See also Figure 4 , shows a working principle diagram of a household appliance when the fan is an AC fan in an embodiment of the present application.

[0053] For AC fans, such as Figure 4 As shown, when the power supply voltage input to the rectifier circuit 402 is constant, the control device PI401 further adjusts the speed of the fan by adjusting the chopping period for the AC fan 403, and finally makes the speed of the fan reach the set speed. Among them, when the set speed of the AC fan is constant, if the required torque output by the AC fan is smaller, the chopping period for adjusting the AC fan 403 is larger, and if the required torque output by the AC fan is larger, the chopping period for adjusting the AC fan 403 is smaller.

[0054] It is understandable that when the fan is an AC fan, if the chopping cycle for adjusting the AC fan 403 is larger, it means that the torque required for the AC fan output is smaller, which further indicates that the degree of dirtiness and blockage of the household appliance is more serious.

[0055] In step 240, actual dirtiness and blockage reference data are determined based on the actual electric control parameters, and the actual dirtiness and blockage reference data are used to characterize the actual dirtiness and blockage degree in the household appliance.

[0056] In one embodiment of the present application, the actual dirty and blocked reference data is determined based on the actual electric control parameters, and can be performed according to the following steps 1 to 2:

[0057] Step 1, obtaining the corresponding relationship between the dirt and blockage reference data and the electric control parameters at the set speed output by the fan.

[0058] Step 2: Based on the corresponding relationship, determine the actual dirt and blockage reference data corresponding to the actual electric control parameter.

[0059] In one embodiment of the present application, the dirty and clogging reference data may include a dirty and clogging value, and the corresponding relationship may be a linear corresponding relationship between the dirty and clogging value and the electric control parameter at the set speed output by the fan.

[0060] Furthermore, the determining of the actual dirty and blocked reference data corresponding to the actual electric control parameter based on the corresponding relationship may be performed according to the following steps:

[0061] Based on the linear correspondence, an actual dirty and blockage value corresponding to the actual electric control parameter is determined.

[0062] In this embodiment, a functional relationship (ie, a corresponding relationship) between the dirty and blocked value and the electric control parameter may be established for each set speed, so that the actual dirty and blocked value corresponding to the actual electric control parameter may be directly determined according to the functional relationship.

[0063] It can be understood that the actual dirtiness and blockage value can be used to characterize the actual degree of dirtiness and blockage in the household appliance, that is, the higher the actual dirtiness and blockage value is, the more serious the actual degree of dirtiness and blockage in the household appliance is.

[0064] Taking the indoor unit of the air conditioner as an example, if the fan of the indoor unit of the air conditioner is a DC fan, based on Figure 3 From the description of DC fans in the , it can be seen that the functional relationship between the dirty blockage value and the VSP adjustment voltage can be a negative correlation. If the fan of the indoor unit of the air conditioner is an AC fan, based on the Figure 4 From the description of the AC fan, it can be seen that the functional relationship between the dirty blockage value and the chopping period can be a positive correlation.

[0065] In the present application, the actual dirty and blockage reference data corresponding to the actual electric control parameters are determined based on the linear correspondence between the dirty and blockage value and the electric control parameter at the set fan output speed. The advantage is that the actual electric control parameters of the existing household appliances can be directly used to quickly obtain the actual dirty and blockage reference data (i.e., the dirty and blockage value) of the household appliances, thereby improving the monitoring efficiency of the dirty and blockage status in the household appliances.

[0066] In another embodiment of the present application, the dirty and clogging reference data may include a plurality of dirty and clogging labels, and the corresponding relationship may be a corresponding relationship between the plurality of dirty and clogging labels and a plurality of electric control parameter ranges at the set speed output by the fan.

[0067] Furthermore, the actual dirty and blocked reference data corresponding to the actual electric control parameter is determined based on the corresponding relationship, and can be performed according to the following steps 1 to 2:

[0068] Step 1: determine the actual electric control parameter range to which the actual electric control parameter belongs.

[0069] Step 2: determining an actual dirty and clogging label corresponding to the actual electric control parameter range based on the correspondence between the multiple dirty and clogging labels and the multiple electric control parameter ranges when the fan outputs the set speed.

[0070] In this embodiment, the plurality of dirtiness and blockage labels include a severe dirtiness and blockage label, a slight dirtiness and blockage label, and a non-dirty and blockage label.

[0071] Furthermore, the severe dirty blockage label, the slight dirty blockage label, and the no dirty blockage label may correspond to an electric control parameter range, respectively. If the actual electric control parameter falls within an electric control parameter range corresponding to the severe dirty blockage label, a severe dirty blockage label is determined for the home appliance; if the actual electric control parameter falls within an electric control parameter range corresponding to the slight dirty blockage label, a slight dirty blockage label is determined for the home appliance; if the actual electric control parameter falls within an electric control parameter range corresponding to the no dirty blockage label, a no dirty blockage label is determined for the home appliance.

[0072] In order to enable those skilled in the art to better understand this embodiment, the indoor unit of the air conditioner will be taken as an example to explain from two aspects: the fan is a DC fan and the fan is an AC fan.

[0073] In the case where the fan includes a DC fan, the electrical control parameter may include a VSP regulating voltage for the DC fan.

[0074] Further, the actual dirty and clogging label corresponding to the actual electric control parameter range is determined based on the correspondence between the multiple dirty and clogging labels and the multiple electric control parameter ranges under the set speed output by the fan, and the following three situations can be processed:

[0075] First, if the actual VSP regulation voltage of the DC fan is less than the first VSP regulation voltage, it is determined that the actual dirty and blocked label of the household appliance is a serious dirty and blocked label.

[0076] Second, if the actual VSP regulation voltage of the DC fan is greater than or equal to the first VSP regulation voltage and less than the second VSP regulation voltage, it is determined that the dirty blockage label of the household appliance is a slight dirty blockage label.

[0077] The third type is to determine that the actual dirty and blocked label of the household appliance is a non-dirty and blocked label if the actual VSP regulated voltage of the DC fan is greater than or equal to the second VSP regulated voltage.

[0078] In the present application, after determining the actual dirtiness and blockage reference data based on the actual electrical control parameters, the actual dirtiness and blockage reference data can also be prompted to the user so that the user can decide whether to clean the filter and evaporator of the air conditioner based on the degree of dirtiness and blockage of the air conditioner reflected by the actual dirtiness and blockage reference data.

[0079] For details, see Figure 5 , shows a flow chart of a method for monitoring dirt and blockage of household electrical appliances when the fan is a DC fan in an embodiment of the present application, specifically including steps 501 to 507.

[0080] Step 501: Obtain the rotation speed N of the current indoor DC fan, the power supply voltage U, and the corresponding VSP regulation voltage.

[0081] Step 502: Obtain the severe clogging regulation voltage VSP1 and the slight clogging regulation voltage VSP2 corresponding to the rotation speed N and the power supply voltage U.

[0082] Step 503: Determine whether VSP < VSP1. If so, execute Step 504; if not, execute Step 505.

[0083] Step 504: Display and push a severe clogging prompt to the APP.

[0084] Step 505: Determine whether VSP < VSP2. If so, execute Step 506; if not, execute Step 507, where VSP2 > VSP1.

[0085] Step 506: Display and push a slight clogging prompt to the APP.

[0086] Step 507: The air conditioner operates normally, and displays and pushes a no-clogging prompt to the APP.

[0087] It can be seen that for the case where the fan in the air conditioner is a DC motor driving the impeller, due to the change in the input air volume before and after the filter screen and the evaporator become clogged, at a certain set high fan rotation speed, the output torque of the DC motor changes. The change in torque is reflected in the change of the VSP regulation voltage of the motor. When the filter screen and the evaporator are clogged, according to the air duct output principle, at the set rotation speed at this time, the driving torque of the motor becomes smaller, which is synchronously reflected in the decrease of the VSP regulation voltage of the motor. Therefore, it is possible to determine whether the filter screen and the evaporator of the air conditioner are clogged by the change of the VSP regulation voltage, so as to set a reminder for the user to clean the filter screen and the evaporator.

[0088] When the fan includes an AC fan, the electric control parameter may include the chopping period for regulating the voltage of the AC fan.

[0089] Further, for determining the actual clogging label corresponding to the actual electric control parameter range based on the corresponding relationship between the multiple clogging labels and the multiple electric control parameter ranges at the set rotation speed output by the fan, the following three situations can be processed:

[0090] First, if the actual chopping period of the AC fan is greater than or equal to the first chopping period, determine that the actual clogging label of the household electrical appliance is the severe clogging label.

[0091] Second, if the actual chopping period of the AC fan is less than the first chopping period and greater than or equal to the second chopping period, determine that the actual clogging label of the household electrical appliance is the slight clogging label.

[0092] Thirdly, if the actual chopping cycle of the AC fan is less than the second chopping cycle, it is determined that the actual dirty and blocked label of the household appliance is a non-dirty and blocked label.

[0093] Similarly, after determining the actual dirtiness and blockage reference data based on the actual electronic control parameters, the actual dirtiness and blockage reference data can also be prompted to the user so that the user can decide whether to clean the filter and evaporator of the air conditioner based on the degree of dirtiness and blockage of the air conditioner reflected by the actual dirtiness and blockage reference data.

[0094] For details, see Figure 6 , shows a flow chart of a method for monitoring dirt and blockage of household electrical appliances when the fan is an AC fan in an embodiment of the present application, specifically including steps 601 to 607.

[0095] Step 601, obtaining the current speed N, power supply voltage U and corresponding chopping voltage period T of the indoor AC fan.

[0096] Step 602, obtaining the severe dirty blockage chopping voltage period T1 and the slight dirty blockage chopping voltage period T2 corresponding to the rotation speed N and the power supply voltage U.

[0097] Step 603, determine whether T≥T1, if so, execute step 604, if not, execute step 605.

[0098] Step 604: Display and push a serious congestion reminder to the APP.

[0099] Step 605, determine whether T≥T2, if so, execute step 606, if not, execute step 607, wherein T2<T1.

[0100] Step 606: Display and APP push a reminder of slight congestion.

[0101] Step 607: The air conditioner operates normally, and the display and APP push notifications indicate that there is no dirt or blockage.

[0102] It can be seen that in the case where the fan in the air conditioner is driven by an AC motor, the input air volume changes before and after the filter and evaporator become dirty and clogged, resulting in a change in the output torque of the AC motor at a set high wind speed. The change in torque is reflected in the change in the input voltage of the motor. When the filter and evaporator are dirty and clogged, according to the air duct output principle, at this time, at the set speed, the driving torque of the motor becomes smaller, which is synchronously reflected in the smaller input voltage at the motor end, and the corresponding chopping cycle at the input adjustment end of the motor becomes longer. Therefore, the change in the chopping cycle at the input adjustment end of the motor can be used to determine whether the filter and evaporator of the air conditioner are dirty and clogged, so as to set a reminder for the user to clean the filter and evaporator.

[0103] In the present application, actual dirty and clogging reference data for characterizing the actual degree of dirty and clogging in the household appliance can be determined based on the actual electrical control parameters of the fan of the household appliance itself. Since the operation data of the existing household appliance can be directly used to analyze and judge the dirty and clogging situation, dirty and clogging detection can be quickly realized without increasing the cost, thereby improving the monitoring efficiency of the dirty and clogging state in the household appliance.

[0104] The following describes an embodiment of the device of the present application, which can be used to execute the dirty and blocked monitoring method of household appliances in the above embodiment of the present application. For details not disclosed in the embodiment of the device of the present application, please refer to the embodiment of the dirty and blocked monitoring method of household appliances in the above embodiment of the present application.

[0105] In the second aspect of the embodiment of the present application, Figure 7 The dirty and blocked monitoring device for an electrical appliance provided in an embodiment of the present application is described as follows:

[0106] See also Figure 7 , shows a block diagram of a device for monitoring dirt and blockage of household appliances in the second aspect of an embodiment of the present application.

[0107] like Figure 7 As shown, the device 700 for monitoring dirt and blockage of household appliances according to an embodiment of the present application includes: an acquisition unit 701 and a determination unit 702.

[0108] Among them, the acquisition unit 701 is used to obtain the actual electrical control parameters for the fan, and the actual electrical control parameters are used to adjust the set output speed of the fan; the determination unit 702 is used to determine the actual dirt and blockage reference data based on the actual electrical control parameters, and the actual dirt and blockage reference data is used to characterize the actual degree of dirt and blockage in the household appliance.

[0109] In some embodiments of the present application, based on the aforementioned scheme, the determination unit 702 is configured to: obtain the correspondence between the dirty and blocked reference data and the electrical control parameters at the set speed output by the fan; based on the correspondence, determine the actual dirty and blocked reference data corresponding to the actual electrical control parameters.

[0110] In some embodiments of the present application, based on the aforementioned scheme, the dirty blockage reference data includes a dirty blockage value, and the corresponding relationship is a linear corresponding relationship between the dirty blockage value and the electrical control parameter at the set speed output by the fan, and the determination unit 702 is also configured to: determine the actual dirty blockage value corresponding to the actual electrical control parameter based on the linear corresponding relationship.

[0111] In some embodiments of the present application, based on the aforementioned scheme, the dirty blockage reference data includes multiple dirty blockage labels, and the corresponding relationship is the corresponding relationship between the multiple dirty blockage labels and the multiple electric control parameter ranges at the set speed output by the fan, and the determination unit 702 is further configured to: determine the actual electric control parameter range to which the actual electric control parameter belongs; based on the corresponding relationship between the multiple dirty blockage labels and the multiple electric control parameter ranges at the set speed output by the fan, determine the actual dirty blockage label corresponding to the actual electric control parameter range.

[0112] In some embodiments of the present application, based on the aforementioned solution, the plurality of dirtiness and blockage labels include a severe dirtiness and blockage label, a slight dirtiness and blockage label, and a no dirtiness and blockage label.

[0113] In some embodiments of the present application, based on the aforementioned scheme, the fan includes a DC fan, the electrical control parameters include a VSP regulation voltage for the DC fan, and the determination unit 702 is further configured to: if the actual VSP regulation voltage of the DC fan is less than the first VSP regulation voltage, then determine that the actual dirty blockage label of the household appliance is a severe dirty blockage label; if the actual VSP regulation voltage of the DC fan is greater than or equal to the first VSP regulation voltage, and less than the second VSP regulation voltage, then determine that the dirty blockage label of the household appliance is a slight dirty blockage label; if the actual VSP regulation voltage of the DC fan is greater than or equal to the second VSP regulation voltage, then determine that the actual dirty blockage label of the household appliance is a no dirty blockage label.

[0114] In some embodiments of the present application, based on the aforementioned scheme, the fan includes an AC fan, the electrical control parameters include a chopping period for adjusting the voltage of the AC fan, and the determination unit 702 is further configured to: if the actual chopping period of the AC fan is greater than or equal to the first chopping period, then the actual dirty and blocked label of the household appliance is determined to be a severe dirty and blocked label; if the actual chopping period of the AC fan is less than the first chopping period, and greater than or equal to the second chopping period, then the actual dirty and blocked label of the household appliance is determined to be a slight dirty and blocked label; if the actual chopping period of the AC fan is less than the second chopping period, then the actual dirty and blocked label of the household appliance is determined to be a no dirty and blocked label.

[0115] In some embodiments of the present application, based on the above-mentioned solution, the device further includes: a prompting unit, which is used to prompt the user with the actual dirty and blocked reference data after determining the actual dirty and blocked reference data based on the actual electric control parameters.

[0116] Based on the same inventive concept, the third aspect of the embodiment of the present application further provides a household appliance, referring to Figure 8, shows a schematic diagram of the structure of the household appliance device in the third aspect of the embodiment of the present application, the household appliance device includes a memory 804, a processor 802, and a computer program stored in the memory 804 and executable on the processor 802, and when the processor 802 executes the computer program, the method for monitoring dirt and blockage of the household appliance device described in the first aspect is implemented.

[0117] Among them, Figure 8 In the embodiment of the present invention, a bus architecture (represented by bus 800) is shown, and bus 800 may include any number of interconnected buses and bridges, and bus 800 links various circuits including one or more processors represented by processor 802 and memory represented by memory 804. Bus 800 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 805 provides an interface between bus 800 and receiver 801 and transmitter 803. Receiver 801 and transmitter 803 may be the same element, i.e., a transceiver, providing a unit for communicating with various other devices on a transmission medium. Processor 802 is responsible for managing bus 800 and general processing, while memory 804 may be used to store data used by processor 802 when performing operations.

[0118] 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 application 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.

[0119] 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.

[0120] 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.

[0121] 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 application, 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 to enable 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 application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0122] The above description is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A method for monitoring dirt and blockage of household appliances, characterized in that: The household appliance is provided with a fan, and the method comprises: Acquiring actual electrical control parameters for the fan, wherein the actual electrical control parameters are used to adjust a set output speed of the fan; Based on the actual electric control parameters, determining actual dirt and blockage reference data, wherein the actual dirt and blockage reference data is used to characterize the actual degree of dirt and blockage in the household appliance; The determining actual dirt and blockage reference data based on the actual electric control parameters includes: Obtaining a corresponding relationship between dirty and clogging reference data and an electric control parameter when the fan outputs the set speed; based on the corresponding relationship, determining actual dirty and clogging reference data corresponding to the actual electric control parameter, wherein the dirty and clogging reference data includes a dirty and clogging value, and the corresponding relationship is a linear corresponding relationship between the dirty and clogging value and the electric control parameter when the fan outputs the set speed, and determining the actual dirty and clogging value corresponding to the actual electric control parameter based on the linear corresponding relationship; Among them, if the rotation speed of the fan is constant, the actual degree of dirt and blockage of the household appliance in which the fan is located is different, and the actual electrical control parameters of the fan are also different. The fan includes a DC fan or an AC fan, and the actual electrical control parameters include a VSP regulating voltage for the DC fan or a chopping period for regulating the voltage of the AC fan. There is a negative correlation between the actual dirt and blockage value and the VSP regulating voltage, and there is a positive correlation between the actual dirt and blockage value and the chopping period.

2. The method according to claim 1, characterized in that: The dirty blockage reference data includes a plurality of dirty blockage labels, the corresponding relationship is a corresponding relationship between the plurality of dirty blockage labels and a plurality of electric control parameter ranges under the set speed output by the fan, and the actual dirty blockage reference data corresponding to the actual electric control parameter is determined based on the corresponding relationship, including: Determining an actual electric control parameter range to which the actual electric control parameter belongs; Based on the correspondence between the multiple dirty and clogging labels and the multiple electric control parameter ranges when the fan outputs the set speed, an actual dirty and clogging label corresponding to the actual electric control parameter range is determined.

3. The method according to claim 2, characterized in that The plurality of dirty blockage labels include a serious dirty blockage label, a slight dirty blockage label, and a no dirty blockage label.

4. The method according to claim 3, characterized in that The determining, based on the correspondence between the plurality of dirty and clogging labels and the plurality of electric control parameter ranges when the fan outputs the set speed, an actual dirty and clogging label corresponding to the actual electric control parameter range comprises: If the actual VSP regulation voltage of the DC fan is less than the first VSP regulation voltage, determining that the actual dirty and blocked label of the household appliance is a serious dirty and blocked label; If the actual VSP regulation voltage of the DC fan is greater than or equal to the first VSP regulation voltage and less than the second VSP regulation voltage, it is determined that the actual dirty blockage label of the household appliance is a slight dirty blockage label; If the actual VSP regulation voltage of the DC fan is greater than or equal to the second VSP regulation voltage, it is determined that the actual dirty and blocked label of the household appliance is a non-dirty and blocked label.

5. The method according to claim 3, characterized in that: The determining, based on the correspondence between the plurality of dirty and clogging labels and the plurality of electric control parameter ranges when the fan outputs the set speed, an actual dirty and clogging label corresponding to the actual electric control parameter range comprises: If the actual chopping cycle of the AC fan is greater than or equal to the first chopping cycle, determining that the actual dirty and blocked label of the household appliance is a serious dirty and blocked label; If the actual chopping cycle of the AC fan is less than the first chopping cycle and greater than or equal to the second chopping cycle, it is determined that the actual dirty blockage label of the household appliance is a slight dirty blockage label; If the actual chopping cycle of the AC fan is less than the second chopping cycle, it is determined that the actual dirty and blocked label of the household appliance is a non-dirty and blocked label.

6. The method according to claim 1, characterized in that After determining actual dirt and blockage reference data based on the actual electric control parameters, the method further includes: The actual dirt and blockage reference data is prompted to the user.

7. A device for monitoring the dirtiness and blockage of household appliances, characterized in that: The household appliance is provided with a fan, and the device comprises: An acquisition unit, used for acquiring actual electrical control parameters for the fan, wherein the actual electrical control parameters are used for adjusting a set output speed of the fan; a determination unit, configured to determine actual dirtiness and blockage reference data based on the actual electric control parameters, wherein the actual dirtiness and blockage reference data is used to characterize an actual degree of dirtiness and blockage in the household appliance; The determining actual dirt and blockage reference data based on the actual electric control parameters includes: Obtaining the corresponding relationship between the dirty and blocked reference data and the electric control parameters at the set speed output by the fan; Based on the corresponding relationship, determining actual dirty and blocking reference data corresponding to the actual electric control parameter, wherein the dirty and blocking reference data includes a dirty and blocking value, and the corresponding relationship is a linear corresponding relationship between the dirty and blocking value and the electric control parameter at the set speed output by the fan, and determining the actual dirty and blocking value corresponding to the actual electric control parameter based on the linear corresponding relationship; Among them, if the rotation speed of the fan is constant, the actual degree of dirt and blockage of the household appliance in which the fan is located is different, and the actual electrical control parameters of the fan are also different. The fan includes a DC fan or an AC fan, and the actual electrical control parameters include a VSP regulating voltage for the DC fan or a chopping period for regulating the voltage of the AC fan. There is a negative correlation between the actual dirt and blockage value and the VSP regulating voltage, and there is a positive correlation between the actual dirt and blockage value and the chopping period.

8. A household appliance, characterized in that: The method comprises one or more processors and one or more memories, wherein at least one program code is stored in the one or more memories, and the at least one program code is loaded and executed by the one or more processors to implement the method according to any one of claims 1 to 6.

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