Range hood-based fresh air equipment control method, device, and fresh air equipment

Abstract

The present application relates to the technical field of smart home devices, and discloses a method for controlling a fresh air device based on a range hood. The method comprises: obtaining the user's usage habits of the range hood, determining the expected usage time corresponding to the current moment, and the expected usage duration and expected exhaust flow rate corresponding to the expected usage time according to the usage habits; determining the expected intake air volume of the fresh air device according to the fresh air flow rate parameters and the expected usage duration of the fresh air device; determining the expected exhaust air volume according to the expected usage duration and the expected exhaust air flow rate; determining an advance time that is positively correlated with the expected air volume difference between the expected exhaust air volume and the expected intake air volume, and positively correlated with the pressure difference threshold; when the interval between the current moment and the expected usage moment is less than or equal to the advance time, controlling the operation of the fresh air device according to the fresh air flow rate parameters. This method can maintain positive indoor pressure and better air quality. The present application also discloses a fresh air device control device and fresh air device based on a range hood.

Description

Technical Field

[0001] The present application relates to the technical field of smart home devices, for example, to a range hood-based fresh air device control method, device, and fresh air device. Background Art

[0002] Currently, when the weather is hot or cold, users tend to close doors and windows and turn on the air conditioner for cooling or heating, creating a relatively enclosed space. When the user turns on the range hood, it exhausts air outdoors, creating a negative pressure environment indoors. In this case, outdoor air can enter the room through gaps in doors and windows, affecting the indoor environment. For example, poor outdoor air quality can reduce indoor air quality.

[0003] In some technical solutions, a fresh air device can be provided on the basis of the existing range hood to provide fresh air for the kitchen range hood and maintain a slightly positive pressure in the room.

[0004] During the implementation of the embodiments of the present application, it was found that at least the following problems exist in the related art:

[0005] The exhaust flow of the range hood is much larger than the intake flow of the fresh air device. If the intake flow of the fresh air device is made the same as the exhaust flow of the range hood, or even greater than the exhaust flow of the range hood, the filtering and purification effect of the fresh air device will be reduced. While ensuring a slightly positive pressure in the room, it will not be possible to effectively maintain better indoor air quality, and the user experience will be poor. Summary of the Invention

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The embodiments of the present application provide a range hood-based fresh air equipment control method, device, and fresh air equipment to ensure a slightly positive indoor pressure and maintain indoor air quality when the range hood is turned on, thereby improving user experience.

[0008] In some embodiments, the method for controlling a fresh air device based on a range hood includes: obtaining a user's usage habits of using the range hood, wherein the usage habits include one-to-one corresponding usage time, usage duration, and exhaust flow rate; determining an expected usage time after the current time and closest to the current time, and the expected usage duration and expected exhaust flow rate corresponding to the expected usage time according to the one-to-one corresponding usage time, usage duration, and exhaust flow rate; obtaining a fresh air flow parameter of the fresh air device, and determining, according to the fresh air flow parameter and the expected usage duration, the expected exhaust flow rate when the range hood is working. , the expected air intake volume of the fresh air device; determine the expected exhaust volume according to the expected usage time and the expected exhaust flow rate, and calculate the expected volume difference between the expected exhaust volume and the expected air intake volume; determine an advance time that is positively correlated with the expected volume difference and positively correlated with a pressure difference threshold, wherein the pressure difference threshold refers to the minimum pressure difference between indoor pressure and outdoor pressure during the operation of the range hood; when the interval between the current moment and the expected usage moment is less than or equal to the advance time, control the operation of the fresh air device according to the fresh air flow rate parameter.

[0009] Optionally, determining the advance time that is positively correlated with the expected air volume difference and positively correlated with the pressure difference threshold includes: obtaining a preset pressure difference that is positively correlated with the pressure difference that the user is accustomed to setting, the preset pressure difference is greater than the pressure difference that the user is accustomed to setting, and the preset pressure difference is greater than the pressure difference threshold; determining the advance time that is positively correlated with the expected air volume difference, positively correlated with the pressure difference threshold, and negatively correlated with the preset pressure difference.

[0010] Optionally, when the interval between the current moment and the first time moment is less than or equal to the advance time moment, the operation of the fresh air device is controlled according to the fresh air flow parameter, including: when the pressure difference between the actual pressure difference between the actual indoor pressure and the actual outdoor pressure and the preset pressure difference is greater than or equal to the pressure control dead zone, the fresh air device is controlled to operate according to the fresh air flow parameter; when the pressure difference between the actual pressure difference between the actual indoor pressure and the actual outdoor pressure and the preset pressure difference is less than the pressure control dead zone, the fresh air device is controlled to operate according to the preset pressure so that the pressure difference between the actual pressure difference and the preset pressure difference is less than the pressure control dead zone.

[0011] Optionally, when the interval between the current moment and the first time moment is less than or equal to the advance time moment, the operation of the fresh air device is controlled according to the fresh air flow parameter, including: when the interval between the current moment and the first time moment is less than or equal to the advance time moment, if the fresh air device is running, the fresh air device is adjusted to the fresh air flow parameter, and then the fresh air is controlled to continue running; if the fresh air device is in a shutdown state, the fresh air device is started and the operation of the fresh air device is controlled according to the fresh air flow parameter.

[0012] Optionally, the expected air intake volume of the fresh air device when the range hood is operating is determined based on the fresh air flow rate parameter and the expected usage time, including: when the fresh air flow rate parameter is the maximum fresh air flow rate of the fresh air device, the product of the fresh air flow rate parameter and the expected usage time is determined as the expected air intake volume; or, when the fresh air flow rate parameter is the maximum fresh air flow rate when the noise of the fresh air device is less than or equal to the noise threshold, the product of the fresh air flow rate parameter and the expected usage time is determined as the expected air intake volume; or, when the fresh air flow rate parameter is the maximum fresh air flow rate in the user's usage habits of using the fresh air device, the product of the fresh air flow rate parameter and the expected usage time is determined as the expected air intake volume.

[0013] Optionally, determining the expected exhaust air volume according to the expected usage time and the expected exhaust air flow includes: determining the expected exhaust air volume as the product of the expected usage time and the expected exhaust air flow.

[0014] Optionally, when the interval between the current moment and the expected usage moment is less than or equal to the advance time, the operation of the fresh air equipment is controlled according to the fresh air flow parameter, including: when the interval between the current moment and the expected usage moment is less than or equal to the preset time, the operation of the fresh air equipment is controlled according to the fresh air flow parameter; wherein the preset time is greater than the advance time.

[0015] In some embodiments, the fresh air equipment control device based on the range hood includes an acquisition module, a first determination module, a second determination module, a third determination module, a fourth determination module and a control module; the acquisition module is used to obtain the user's usage habits of using the range hood, wherein the usage habits include one-to-one corresponding usage time, usage duration and exhaust flow rate; the first determination module is used to determine the expected usage time after the current time and closest to the current time, and the expected usage duration and expected exhaust flow rate corresponding to the expected usage time according to the one-to-one corresponding usage time, usage duration and exhaust flow rate; the second determination module is used to obtain the fresh air flow rate parameters of the fresh air equipment, and determine the fresh air flow rate parameters according to the fresh air flow rate parameters and the exhaust flow rate The expected usage time determines the expected air intake volume of the fresh air device when the range hood is working; the third determination module is used to determine the expected exhaust volume based on the expected usage time and the expected exhaust flow, and calculate the expected volume difference between the expected exhaust volume and the expected air intake volume; the fourth determination module is used to determine the advance time that is positively correlated with the expected volume difference and the pressure difference threshold, wherein the pressure difference threshold refers to the minimum pressure difference between the indoor pressure and the outdoor pressure during the operation of the range hood; the control module is used to control the operation of the fresh air device according to the fresh air flow parameter when the interval between the current moment and the expected usage moment is less than or equal to the advance time.

[0016] In some embodiments, the range hood-based fresh air equipment control device includes a processor and a memory storing program instructions, and the processor is configured to execute the range hood-based fresh air equipment control method provided in the above embodiment when executing the program instructions.

[0017] In some embodiments, the fresh air equipment includes the range hood-based fresh air equipment control device provided in the aforementioned embodiments.

[0018] The range hood-based fresh air device control method, device, and fresh air device provided in the embodiments of the present application can achieve the following technical effects:

[0019] Based on the user's range hood usage habits and the fresh air flow parameters of the fresh air device, before the user is about to use the range hood, the fresh air device is controlled to operate according to the fresh air flow parameters of the fresh air device in advance, that is, sufficient fresh air is supplied to the room in advance; when the user starts the range hood, even if the exhaust flow of the range hood is much greater than the intake flow of the fresh air device, the sufficient fresh air supplied to the room in advance will not easily cause negative pressure in the room. During the above process, the fresh air device can operate according to its normal parameters, without reducing the effect of filtering and purifying the air. At the same time, it maintains a positive pressure environment in the room, making it difficult for outdoor air to enter the room through the gaps in doors and windows, which is conducive to maintaining better indoor air quality.

[0020] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are considered similar elements, and wherein:

[0022] Figure 1 This is a diagram of an implementation scenario of a range hood-based fresh air equipment control method provided in an embodiment of the present application;

[0023] Figure 2 This is a flow chart of a method for controlling a fresh air device based on a range hood provided in an embodiment of the present application;

[0024] Figure 3 This is a flow chart of a method for controlling a fresh air device based on a range hood provided in an embodiment of the present application;

[0025] Figure 4 This is a schematic diagram of a fresh air equipment control device based on a range hood provided in an embodiment of the present application;

[0026] Figure 5 This is a schematic diagram of a fresh air equipment control device based on a range hood provided in an embodiment of the present application;

[0027] Figure 6 This is a schematic diagram of a fresh air equipment control device based on a range hood provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] In order to be able to understand the features and technical contents of the embodiments of the present application in more detail, the implementation of the embodiments of the present application is described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present application. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0029] In the description and claims of the embodiments of the present application and the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate for the purposes of describing the embodiments of the present application. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0030] Unless otherwise stated, the term "plurality" means more than two.

[0031] In the embodiments of the present application, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0032] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0033] Figure 1 This is an implementation scenario diagram of a fresh air equipment control method based on a range hood provided in an embodiment of the present application.

[0034] Combine Figure 1 As shown, a range hood 11 is provided in room A, and a fresh air device 12 is provided in room A, room B, room C or room D; and one or more of room A, room B, room C and room D is provided with a first pressure sensor 13 for detecting indoor pressure (or indoor pressure); a second pressure sensor 14 is provided outdoors, and the user detects the outdoor pressure, and then the pressure difference can be calculated based on the detected indoor pressure and outdoor pressure.

[0035] Among them, the fresh air device 12 refers to a device with a fresh air function, which can be an independently set fresh air fan or an air conditioner with a fresh air function.

[0036] Figure 2 This is a flow chart of a method for controlling a fresh air device based on a range hood provided in an embodiment of the present application. This control method can be executed by a controller of the fresh air device or by a server of a smart home system.

[0037] Combine Figure 2 As shown, the fresh air equipment control method based on the range hood includes:

[0038] S201: Obtaining the user's usage habits of the range hood.

[0039] Among them, usage habits include one-to-one usage time, usage duration and exhaust flow rate.

[0040] For example, different users have different habits of using range hoods. For example, different users cook different amounts of food, so different users use the range hood for different lengths of time; different users have different meal times, so different users use the range hood at different times; different users use the range hood at different gears when turning on the range hood, so different users use the range hood with different exhaust flow rates.

[0041] The range hood usage habits of users can be obtained through statistical methods. For example, the time, duration, and exhaust volume of range hood usage over the past week or month can be counted. The time during breakfast, lunch, and dinner can be obtained separately. The average time during breakfast can be used as the range hood usage time during breakfast; the average time during lunch can be used as the range hood usage time during lunch; and the average time during dinner can be used as the range hood usage time during dinner. Furthermore, the average value of the usage time corresponding to each moment in the breakfast time period is determined as the usage time corresponding to the usage time of the range hood in the breakfast time period, and the average value of the exhaust flow rate corresponding to each moment in the breakfast time period is determined as the exhaust flow rate corresponding to the usage time of the range hood in the breakfast time period; the average value of the usage time corresponding to each moment in the lunch time period is determined as the usage time corresponding to the usage time of the range hood in the lunch time period, and the average value of the exhaust flow rate corresponding to each moment in the lunch time period is determined as the exhaust flow rate corresponding to the usage time of the range hood in the lunch time period; the average value of the usage time corresponding to each moment in the dinner time period is determined as the usage time corresponding to the usage time of the range hood in the dinner time period, and the average value of the exhaust flow rate corresponding to each moment in the dinner time period is determined as the exhaust flow rate corresponding to the usage time of the range hood in the dinner time period.

[0042] In addition, the user's usage habits of the range hood may be manually input by the user, or the user's usage habits of the range hood may be default settings when the device leaves the factory.

[0043] Of course, the above content is only an example of the specific way in which the user uses the range hood. Those skilled in the art can determine the specific way to obtain the user's usage habits of the range hood according to actual conditions.

[0044] S202. Determine the expected usage time after the current time and closest to the current time, and the expected usage time and expected exhaust flow rate corresponding to the expected usage time, based on the one-to-one correspondence between the usage time, usage duration, and exhaust flow rate.

[0045] The usage habits include one-to-one corresponding usage times, usage durations, and exhaust flow rates. The usage habits can be stored in a database in the form of a one-to-one corresponding data table. After obtaining the current time, the expected usage time after the current time and closest to the current time is retrieved from the database, and then the expected usage duration and expected exhaust flow rate that have a corresponding relationship with the expected usage time are read from the database.

[0046] S203: Obtain fresh air flow parameters of the fresh air device, and determine the expected air intake volume of the fresh air device when the range hood is working according to the fresh air flow parameters and the expected usage time.

[0047] The fresh air flow parameter may be the maximum fresh air flow of the fresh air device, or the fresh air flow parameter may be the maximum fresh air flow when the noise of the fresh air device is less than or equal to the noise threshold, or the fresh air flow parameter may be the maximum fresh air flow in the user's usage habits of the fresh air device.

[0048] Furthermore, the expected air intake volume of the fresh air device when the range hood is working is determined based on the fresh air flow parameter and the expected usage time, including: when the fresh air flow parameter is the maximum fresh air flow, the product of the fresh air flow parameter and the expected usage time is determined as the expected air intake volume.

[0049] Alternatively, the expected air intake volume of the fresh air device when the range hood is working is determined based on the fresh air flow parameter and the expected usage time, including: when the fresh air flow parameter is the maximum fresh air flow when the noise of the fresh air device is less than or equal to the noise threshold, the product of the fresh air flow parameter and the expected usage time is determined as the expected air intake volume.

[0050] Alternatively, the expected air intake volume of the fresh air device when the range hood is working is determined based on the fresh air flow parameter and the expected usage time, including: when the fresh air flow parameter is the maximum fresh air flow in the user's usage habits of the fresh air device, the product of the fresh air flow parameter and the expected usage time is determined as the expected air intake volume.

[0051] The expected air intake volume of the fresh air equipment can be obtained through the above method.

[0052] S204: Determine the expected exhaust air volume according to the expected usage time and the expected exhaust air flow rate, and calculate the expected air volume difference between the expected exhaust air volume and the expected intake air volume.

[0053] For example, the product of the expected usage time and the expected exhaust flow rate can be determined as the expected exhaust air volume.

[0054] S205: Determine an advance time that is positively correlated with the expected air volume difference and the pressure difference threshold.

[0055] The pressure difference threshold refers to the minimum pressure difference between the indoor pressure and the outdoor pressure during the operation of the range hood.

[0056] In a specific application process, the pressure difference threshold can also be represented by the minimum indoor pressure. For example, the outdoor pressure is detected and the sum of the outdoor pressure and the pressure difference threshold is determined as the minimum indoor pressure. That is, determining the advance time that is positively correlated with the expected air volume difference and the pressure difference threshold may include: determining the advance time that is positively correlated with the expected air volume difference and the minimum indoor pressure.

[0057] The pressure difference threshold can be a user-set value, or the pressure difference threshold is related to the outdoor air quality. Then, the pressure difference threshold can be determined as follows: obtain the outdoor air quality, and obtain the pressure difference threshold corresponding to the outdoor air quality. For example, the worse the outdoor control quality, the larger the pressure difference threshold, and the better the outdoor air quality, the smaller the pressure difference threshold.

[0058] The correspondence between the above-mentioned expected air volume difference, pressure difference threshold and advance time can be stored in the database in the form of a one-to-one correspondence data table; after obtaining the expected air volume difference and pressure difference threshold, by querying the database, the advance time that is positively correlated with the expected air volume difference and positively correlated with the pressure difference threshold can be obtained.

[0059] Alternatively, the correspondence between the above-mentioned expected air volume difference, pressure difference threshold and advance time can be stored in the form of a formula, and wherein the expected air volume difference and pressure difference threshold are the independent variables of the formula, and the advance time is the dependent variable of the formula; after obtaining the expected air volume difference and pressure difference threshold, the expected air volume difference and pressure difference threshold are substituted into the formula as independent variables, and the calculated dependent variable is determined as the advance time.

[0060] Furthermore, determining the advance time that is positively correlated with the expected air volume difference and the pressure difference threshold value includes: obtaining a preset pressure difference that is positively correlated with the pressure difference that the user is accustomed to setting; determining the advance time that is positively correlated with the expected air volume difference, the pressure difference threshold value, and negatively correlated with the preset pressure difference.

[0061] The preset pressure difference is greater than the pressure difference that the user is accustomed to setting, and the preset pressure difference is greater than the pressure difference threshold.

[0062] The pressure difference set by the user is the pressure difference between the indoor pressure and the outdoor pressure; the preset pressure difference is the pressure difference between the indoor pressure and the outdoor pressure. Normally, when the fresh air equipment is working, the indoor pressure is greater than the outdoor pressure.

[0063] The pressure difference that the user is accustomed to setting can be obtained through statistical methods. For example, the pressure difference set by the user each time the fresh air equipment is used in the past week, half a month or a month can be counted, and the average value of the pressure difference set each time can be determined as the pressure difference that the user is accustomed to setting.

[0064] There is a corresponding relationship between the above-mentioned expected air volume difference, pressure difference threshold, preset pressure difference and advance time. The expected air volume difference, pressure difference threshold, preset pressure difference and advance time can be stored in the database in the form of a one-to-one corresponding data table. After obtaining the expected air volume difference, pressure difference threshold and preset pressure difference, the advance time corresponding to the expected air volume difference, pressure difference threshold and preset pressure difference can be obtained by querying the database.

[0065] Alternatively, the correspondence between the above-mentioned expected air volume difference, pressure difference threshold, preset pressure difference and advance time can be stored in the form of a formula, and wherein the expected air volume difference, pressure difference threshold and preset pressure difference are the independent variables of the formula, and the advance time is the dependent variable of the formula; after obtaining the expected air volume difference, pressure difference threshold and preset pressure difference, the expected air volume difference, pressure difference threshold and preset pressure difference are substituted into the formula as independent variables, and the calculated dependent variable is determined as the advance time.

[0066] The advance time can be obtained through the above method.

[0067] S206: When the interval between the current time and the expected time of use is less than or equal to the advance time, control the operation of the fresh air equipment according to the fresh air flow parameter.

[0068] Typically, when executing the control method provided in the embodiments of the present application, the interval between the current time and the expected time of use is greater than the advance time. As the interval between the current time and the expected time of use decreases, when the interval equals the advance time, the operation of the fresh air device is controlled according to the fresh air flow parameters; and as the interval continues to decrease, the operation of the fresh air device continues to be controlled according to the fresh air flow parameters.

[0069] Alternatively, when the interval between the current moment and the expected time of use is less than or equal to the advance time, the operation of the fresh air device is controlled according to the fresh air flow parameters, including: when the interval between the current moment and the expected time of use is less than or equal to the preset time, the operation of the fresh air device is controlled according to the fresh air flow parameters; wherein the preset time is greater than the advance time. That is, when executing the control method provided in the embodiment of the present application, the interval between the current moment and the expected time of use is greater than the preset time, as the interval decreases, when the interval is equal to the preset time, the operation of the fresh air device is controlled according to the fresh air flow parameters; and as the interval continues to decrease, the operation of the fresh air device is continuously controlled according to the fresh air flow parameters. This is conducive to storing sufficient fresh air volume indoors, and is conducive to maintaining positive pressure indoors after starting the range hood.

[0070] Based on the user's range hood usage habits and the fresh air flow parameters of the fresh air device, before the user is about to use the range hood, the fresh air device is controlled to operate according to the fresh air flow parameters of the fresh air device in advance, that is, sufficient fresh air is supplied to the room in advance; when the user starts the range hood, even if the exhaust flow of the range hood is much greater than the intake flow of the fresh air device, the sufficient fresh air supplied to the room in advance will not easily cause negative pressure in the room. During the above process, the fresh air device can operate according to its normal parameters, without reducing the effect of filtering and purifying the air. At the same time, it maintains a positive pressure environment in the room, making it difficult for outdoor air to enter the room through the gaps in doors and windows, which is conducive to maintaining better indoor air quality.

[0071] The following further explains how to control the operation of the fresh air equipment based on the fresh air flow parameters.

[0072] Optionally, when the interval between the current moment and the first time moment is less than or equal to the advance time moment, the operation of the fresh air equipment is controlled according to the fresh air flow parameters, including: when the interval between the current moment and the first time moment is less than or equal to the advance time moment, if the fresh air equipment is running, the fresh air equipment is adjusted to the fresh air flow parameters, and then the fresh air is controlled to continue running; if the fresh air equipment is in a shutdown state, the fresh air equipment is started and the operation of the fresh air equipment is controlled according to the fresh air flow parameters.

[0073] Furthermore, when the advance time is obtained, which is positively correlated with the expected air volume difference, positively correlated with the pressure difference threshold, and negatively correlated with the preset pressure difference, the above-mentioned controlling the operation of the fresh air device according to the fresh air flow parameter may include: when the pressure difference between the actual pressure difference between the actual indoor pressure and the actual outdoor pressure and the preset pressure difference is greater than or equal to the pressure control dead zone, controlling the fresh air device to operate according to the fresh air flow parameter;

[0074] When the pressure difference between the actual indoor pressure and the actual outdoor pressure and the preset pressure difference is less than the pressure control dead zone, the operation of the fresh air equipment is controlled according to the preset pressure so that the pressure difference between the actual pressure difference and the preset pressure difference is less than the pressure control dead zone.

[0075] In this way, on the one hand, there is enough fresh air in the room, and the indoor pressure can still be maintained at positive after the range hood is started. On the other hand, it can also avoid excessive indoor pressure (actual pressure difference) and maintain a relatively comfortable pressure environment for users.

[0076] Figure 3 This is a flow chart of a method for controlling a fresh air device based on a range hood provided in an embodiment of the present application, to specifically illustrate the steps in the above embodiment.

[0077] Combine Figure 3 As shown, the fresh air equipment control method based on the range hood includes:

[0078] S301: Obtaining the user's usage habits of the range hood.

[0079] S302. Determine the expected usage time after the current time and closest to the current time, and the expected usage time and expected exhaust flow rate corresponding to the expected usage time, based on the one-to-one correspondence between the usage time, usage duration, and exhaust flow rate.

[0080] S303: Obtain fresh air flow parameters of the fresh air device, and determine the expected air intake volume of the fresh air device when the range hood is working according to the fresh air flow parameters and the expected usage time.

[0081] S304: Determine the expected exhaust air volume according to the expected usage time and the expected exhaust air flow rate, and calculate the expected air volume difference between the expected exhaust air volume and the expected intake air volume.

[0082] S305: Obtain a preset pressure difference that is positively correlated with the pressure difference that the user is accustomed to setting.

[0083] S306: Determine an advance time that is positively correlated with the expected air volume difference, positively correlated with the pressure difference threshold, and negatively correlated with the preset pressure difference.

[0084] S307: When the pressure difference between the actual indoor pressure and the actual outdoor pressure and the preset pressure difference is greater than or equal to the pressure control dead zone, control the fresh air equipment to operate according to the fresh air flow parameter.

[0085] S308. When the pressure difference between the actual indoor pressure and the actual outdoor pressure and the preset pressure difference is less than the pressure control dead zone, the fresh air equipment is controlled to operate according to the preset pressure so that the pressure difference between the actual pressure difference and the preset pressure difference is less than the pressure control dead zone.

[0086] Figure 4 Schematic diagram of a range hood-based fresh air device control device provided in an embodiment of the present application. The range hood-based fresh air device control device can be implemented in software, hardware, or a combination of both.

[0087] Combine Figure 4 As shown, the fresh air equipment control device based on the range hood includes an obtaining module 41, a first determining module 42, a second determining module 43, a third determining module 44, a fourth determining module 45 and a control module 46;

[0088] The obtaining module 41 is used to obtain the user's usage habits of the range hood, wherein the usage habits include one-to-one corresponding usage time, usage duration, and exhaust flow rate;

[0089] The first determining module 42 is configured to determine an expected usage time after the current time and closest to the current time, and an expected usage time and expected exhaust flow rate corresponding to the expected usage time, based on the one-to-one correspondences among usage time, usage duration, and exhaust flow rate;

[0090] The second determining module 43 is used to obtain the fresh air flow parameter of the fresh air device, and determine the expected air intake volume of the fresh air device when the range hood is working according to the fresh air flow parameter and the expected usage time;

[0091] The third determining module 44 is used to determine the expected exhaust air volume according to the expected usage time and the expected exhaust air flow rate, and calculate the expected air volume difference between the expected exhaust air volume and the expected intake air volume;

[0092] The fourth determining module 45 is used to determine the advance time that is positively correlated with the expected air volume difference and positively correlated with the pressure difference threshold, wherein the pressure difference threshold refers to the minimum pressure difference between the indoor pressure and the outdoor pressure during the operation of the range hood;

[0093] The control module 46 is used to control the operation of the fresh air equipment according to the fresh air flow parameters when the interval between the current time and the expected use time is less than or equal to the advance time.

[0094] Figure 5 This is a schematic diagram of a fresh air equipment control device based on a range hood provided in an embodiment of the present application.

[0095] Combine Figure 5 As shown, the fourth determination module 45 includes an acquisition unit 451 and a first determination unit 452; the acquisition unit 451 is used to obtain a preset pressure difference that is positively correlated with the pressure difference that the user is accustomed to setting, the preset pressure difference is greater than the pressure difference that the user is accustomed to setting, and the preset pressure difference is greater than the pressure difference threshold; the first determination unit 452 is used to determine the advance time that is positively correlated with the expected air volume difference, positively correlated with the pressure difference threshold, and negatively correlated with the preset pressure difference.

[0096] Optionally, the control module 46 includes a first control unit and a second control unit; the first control unit is used to control the fresh air equipment to operate according to the fresh air flow parameters when the pressure difference between the actual pressure difference between the actual indoor pressure and the actual outdoor pressure and the preset pressure difference is greater than or equal to the pressure control dead zone; the second control unit is used to control the fresh air equipment to operate according to the preset pressure when the pressure difference between the actual pressure difference between the actual indoor pressure and the actual outdoor pressure and the preset pressure difference is less than the pressure control dead zone, so that the pressure difference between the actual pressure difference and the preset pressure difference is less than the pressure control dead zone.

[0097] Optionally, the control module 46 includes a third control unit and a fourth control unit; the third control unit is used to adjust the fresh air equipment to the fresh air flow parameter and then control the fresh air to continue running if the fresh air equipment is running when the interval between the current moment and the first moment is less than or equal to the advance time; the fourth control unit is used to start the fresh air equipment and control the operation of the fresh air equipment according to the fresh air flow parameter if the fresh air equipment is in a shutdown state.

[0098] Optionally, the second determination module 43 includes a second determination unit, a third determination unit or a fourth determination unit; the second determination unit is used to determine the product of the fresh air flow parameter and the expected usage time as the expected intake air volume when the fresh air flow parameter is the maximum fresh air flow of the fresh air device; the third determination unit is used to determine the product of the fresh air flow parameter and the expected usage time as the expected intake air volume when the fresh air flow parameter is the maximum fresh air flow when the noise of the fresh air device is less than or equal to the noise threshold; the fourth determination unit is used to determine the product of the fresh air flow parameter and the expected usage time as the expected intake air volume when the fresh air flow parameter is the maximum fresh air flow in the user's usage habits of using the fresh air device.

[0099] Optionally, the third determining module 44 is configured to determine the expected exhaust air volume as the product of the expected usage time and the expected exhaust air flow rate.

[0100] Optionally, the control module 46 includes a fifth control unit, which is used to control the operation of the fresh air equipment according to the fresh air flow parameters when the interval between the current moment and the expected usage moment is less than or equal to a preset duration; wherein the preset duration is greater than the advance duration.

[0101] In some embodiments, the range hood-based fresh air equipment control device includes a processor and a memory storing program instructions. The processor is configured to execute the range hood-based fresh air equipment control method provided in the above embodiments when executing the program instructions.

[0102] Figure 6 This is a schematic diagram of a fresh air equipment control device based on a range hood provided in an embodiment of the present application. Figure 6 As shown, the fresh air equipment control device based on the range hood includes:

[0103] The processor 61 and memory 62 may also include a communication interface 63 and a bus 64. The processor 61, communication interface 63, and memory 62 may communicate with each other via the bus 64. The communication interface 63 may be used for information transmission. The processor 61 may invoke the logic instructions in the memory 62 to execute the range hood-based fresh air device control method provided in the aforementioned embodiment.

[0104] In addition, the logic instructions in the memory 62 can be implemented in the form of software functional units and stored in a computer-readable storage medium when sold or used as an independent product.

[0105] Memory 62, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of the present application. Processor 61 executes the software programs, instructions, and modules stored in memory 62 to perform functional applications and data processing, thereby implementing the methods in the above-mentioned method embodiments.

[0106] The memory 62 may include a program storage area and a data storage area. The program storage area may store an operating system and at least one application required for a function; the data storage area may store data generated based on the use of the terminal device. Furthermore, the memory 62 may include high-speed random access memory and non-volatile memory.

[0107] An embodiment of the present application provides a fresh air device, including the range hood-based fresh air device control device provided in the aforementioned embodiment.

[0108] An embodiment of the present application provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the range hood-based fresh air equipment control method provided in the aforementioned embodiment.

[0109] An embodiment of the present application provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer executes the fresh air equipment control method based on the range hood provided in the aforementioned embodiment.

[0110] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0111] The technical solutions of the embodiments of the present application can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method of the embodiments of the present application. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program code, or a transient storage medium.

[0112] The above description and accompanying drawings sufficiently illustrate the embodiments of the present application to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, process, and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for portions and features of other embodiments. Furthermore, the terms used in this application are intended only to describe the embodiments and are not intended to limit the claims. As used in the embodiments and in the claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. In addition, when used in this application, the terms "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. In the absence of further limitations, the phrase "comprising a..." does not preclude the presence of other identical elements in the process, method, or apparatus comprising the elements. In this document, each embodiment may focus on the differences from other embodiments, and similar portions between the embodiments may refer to each other. For methods, products, etc. disclosed in the embodiments, if they correspond to the method portion disclosed in the embodiments, the relevant portions may refer to the description of the method portion.

[0113] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. Technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the embodiments of the present application. Technicians can clearly understand that for the convenience and brevity of description, the specific working process of the above-described systems, devices and units can refer to the corresponding process in the aforementioned method embodiment and will not be repeated here.

[0114] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of units can be merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, the functional units in the embodiments of the present application may be integrated into a processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

[0115] The flow charts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the system, method and computer program product according to the embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a part of a module, program segment or code, and a part of a module, program segment or code comprises one or more executable instructions for realizing the logical function of the specification. In some alternative implementations, the functions marked in the box can also occur in a sequence different from that marked in the accompanying drawings. For example, two continuous boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented by a special hardware-based system that performs the function or action of the specification, or can be implemented by a combination of special hardware and computer instructions.

Claims

1. A method for controlling fresh air equipment based on a range hood, characterized in that: include: Obtaining the user's usage habits of the range hood, wherein the usage habits include one-to-one correspondences of usage time, usage duration, and exhaust flow rate; According to the one-to-one correspondence between the usage time, usage duration, and exhaust flow rate, determine the expected usage time after the current time and closest to the current time, as well as the expected usage duration and expected exhaust flow rate corresponding to the expected usage time; Obtaining a fresh air flow parameter of the fresh air device, and determining an expected air intake volume of the fresh air device when the range hood is operating based on the fresh air flow parameter and the expected usage duration; Determining an expected exhaust air volume according to the expected usage time and the expected exhaust air flow rate, and calculating an expected air volume difference between the expected exhaust air volume and the expected intake air volume; Determining an advance time that is positively correlated with the expected air volume difference and the pressure difference threshold; wherein determining the advance time that is positively correlated with the expected air volume difference and the pressure difference threshold includes: Obtaining a preset pressure difference that is positively correlated with the pressure difference accustomed to being set by the user, the preset pressure difference being greater than the pressure difference accustomed to being set by the user, and the preset pressure difference being greater than a pressure difference threshold; determining an advance time that is positively correlated with the expected air volume difference, positively correlated with the pressure difference threshold, and negatively correlated with the preset pressure difference, wherein the pressure difference threshold refers to a minimum pressure difference between indoor pressure and outdoor pressure during operation of the range hood; When the interval between the current time and the expected use time is less than or equal to the advance time, the operation of the fresh air device is controlled according to the fresh air flow parameter.

2. The control method according to claim 1, characterized in that: When the interval between the current moment and the first time period is less than or equal to the advance time period, controlling the operation of the fresh air device according to the fresh air flow parameter includes: When the pressure difference between the actual indoor pressure and the actual outdoor pressure and the preset pressure difference is greater than or equal to the pressure control dead zone, controlling the fresh air device to operate according to the fresh air flow parameter; When the pressure difference between the actual indoor pressure and the actual outdoor pressure and the preset pressure difference is less than the pressure control dead zone, the operation of the fresh air equipment is controlled according to the preset pressure so that the pressure difference between the actual pressure difference and the preset pressure difference is less than the pressure control dead zone.

3. The control method according to claim 1, wherein: When the interval between the current moment and the first time period is less than or equal to the advance time period, controlling the operation of the fresh air device according to the fresh air flow parameter includes: When the interval between the current moment and the first time duration is less than or equal to the advance time duration, if the fresh air device is running, adjusting the fresh air device to the fresh air flow parameter, and then controlling the fresh air device to continue running; If the fresh air device is in a shutdown state, the fresh air device is started and the operation of the fresh air device is controlled according to the fresh air flow parameter.

4. The control method according to any one of claims 1 to 3, characterized in that: Determining the expected air intake volume of the fresh air device when the range hood is operating according to the fresh air flow parameter and the expected usage time includes: In a case where the fresh air flow rate parameter is the maximum fresh air flow rate of the fresh air device, the product of the fresh air flow rate parameter and the expected usage time is determined as the expected intake air volume; or, When the fresh air flow rate parameter is the maximum fresh air flow rate when the noise of the fresh air device is less than or equal to the noise threshold, the product of the fresh air flow rate parameter and the expected usage time is determined as the expected intake air volume; or, When the fresh air flow parameter is the maximum fresh air flow in the user's usage habit of using the fresh air device, the product of the fresh air flow parameter and the expected usage time is determined as the expected intake air volume.

5. The control method according to any one of claims 1 to 3, characterized in that: Determining the expected exhaust air volume according to the expected usage time and the expected exhaust air flow rate includes: The product of the expected usage time and the expected exhaust flow rate is determined as the expected exhaust air volume.

6. The control method according to any one of claims 1 to 3, characterized in that: When the interval between the current time and the expected use time is less than or equal to the advance time, controlling the operation of the fresh air device according to the fresh air flow parameter includes: When the interval between the current time and the expected usage time is less than or equal to a preset time, controlling the operation of the fresh air device according to the fresh air flow parameter; The preset duration is greater than the advance duration.

7. A fresh air equipment control device based on a range hood, characterized in that: include: An acquisition module, configured to obtain a user's usage habits of the range hood, wherein the usage habits include a one-to-one correspondence of usage time, usage duration, and exhaust flow rate; A first determining module is configured to determine, based on the one-to-one correspondences between the usage time, usage duration, and exhaust flow rate, an expected usage time that is closest to the current time and the expected usage duration and exhaust flow rate corresponding to the expected usage time; a second determining module, configured to obtain a fresh air flow parameter of the fresh air device, and determine an expected air intake volume of the fresh air device when the range hood is operating according to the fresh air flow parameter and the expected usage duration; a third determining module, configured to determine an expected exhaust air volume according to the expected usage duration and the expected exhaust air flow rate, and calculate an expected air volume difference between the expected exhaust air volume and the expected intake air volume; a fourth determination module, configured to determine an advance time period that is positively correlated with the expected air volume difference and a pressure difference threshold value, wherein the pressure difference threshold value refers to a minimum pressure difference between indoor pressure and outdoor pressure during operation of the range hood; wherein determining the advance time period that is positively correlated with the expected air volume difference and the pressure difference threshold value comprises: obtaining a preset pressure difference that is positively correlated with a pressure difference that is habitually set by a user, the preset pressure difference being greater than the pressure difference that is habitually set by the user, and the preset pressure difference being greater than the pressure difference threshold value; and determining the advance time period that is positively correlated with the expected air volume difference, positively correlated with the pressure difference threshold value, and negatively correlated with the preset pressure difference; A control module is used to control the operation of the fresh air equipment according to the fresh air flow parameter when the interval between the current moment and the expected usage moment is less than or equal to the advance time.

8. A fresh air equipment control device based on a range hood, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the range hood-based fresh air equipment control method according to any one of claims 1 to 6 when executing the program instructions.

9. A fresh air device, characterized in that: It includes the fresh air equipment control device based on the range hood as described in claim 7 or 8.

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