Energy-saving control method, device and system for an air purifier

Abstract

This application relates to the technical field of energy-saving control of air purifiers, and specifically relates to an energy-saving control method, device and system for an air purifier. The method includes: collecting pollutant concentration data, fan wind speed values and average power at each collection moment of the air purifier; calculating the pollutant concentration reduction values of various types of pollutant concentration data in each air purification cycle; further obtaining the pollutant treatment average efficiency difference values in each air purification cycle; calculating the pollutant treatment factors of various types of pollutant concentration data in each air purification cycle; further obtaining the comprehensive pollutant treatment factors in each air purification cycle; calculating the initial fan wind speed values in each air purification cycle; obtaining the decline degree of the air pollutant treatment rate, obtaining the preferred fan wind speed values in each air purification cycle, and performing energy-saving control on the air purifier. This application improves the air purification efficiency of the air purifier.

Description

Technical Field

[0001] This application relates to the technical field of energy-saving control of air purifiers, and specifically relates to an energy-saving control method, device and system for an air purifier. Background Art

[0002] An air purifier, also known as an air cleaner or air freshener, can adsorb, decompose or transform various air pollutants, improve indoor air quality, and effectively enhance the air cleanliness of the environment. The fan speed of an air purifier directly affects the purification efficiency and the energy consumed. The greater the fan speed of the air purifier, the faster the air flow through the filter net. However, due to the limited surface area of the filter, when the air flow rate is too fast, pollutants may not have enough time to contact the filter net, resulting in a decrease in the filtering effect. When the fan speed is too low, the pollutants in the air cannot be fully inhaled and filtered through the filter net, and the purification efficiency of the pollutants is relatively low. Summary of the Invention

[0003] In order to solve the above technical problems, the purpose of this application is to provide an energy-saving control method, device and system for an air purifier, and the specific technical solutions adopted are as follows:

[0004] In a first aspect, an embodiment of this application provides an energy-saving control method for an air purifier, and the method includes the following steps:

[0005] Collect data on the concentrations of various pollutants at each collection moment of the air purifier, the fan speed values and the average power in each air purification cycle;

[0006] Based on the difference in the pollutant concentration data at the start and end of the air purification cycle, obtain the reduction values of the concentrations of various pollutants in each air purification cycle;

[0007] Based on the difference between the reduction values of the pollutant concentrations and the difference in the pollutant concentration data at the end between any two air purification cycles, obtain the average difference value of the pollutant treatment efficiency in each air purification cycle;

[0008] Based on the reduction value of the pollutant concentration and the duration of the air purification cycle, obtain the pollutant treatment factors of the concentrations of various pollutants in each air purification cycle;

[0009] Based on the pollutant treatment factor, the average power and the duration of the air purification cycle, obtain the comprehensive pollutant treatment factor in each air purification cycle;

[0010] Based on the comprehensive pollutant treatment factor, the average difference value of the pollutant treatment efficiency and the occurrence times of each fan speed value, obtain the initial fan speed value in each air purification cycle;

[0011] Based on the difference in the change of pollutant concentration data at the beginning and end of the air purification cycle, obtain the average decline degree of the air pollutant treatment rate relative to the proportion of the change in pollutant concentration data at the beginning.

[0012] Based on the decline degree of the air pollutant treatment rate, the magnitude relationship between the pollutant concentration data, and the initial fan wind speed value, obtain the preferred fan wind speed value for each air purification cycle, and perform energy-saving control on the air purifier.

[0013] Furthermore, the method for obtaining the pollutant concentration reduction value is as follows:

[0014] For the pollutant concentration data of various types in each air purification cycle of the air purifier, calculate the difference between the pollutant concentration data at the first collection moment and the pollutant concentration data at the last collection moment within the air purification cycle, and use it as the pollutant concentration reduction value of various types of pollutant concentration data in each air purification cycle.

[0015] Furthermore, the method for obtaining the average pollutant treatment efficiency difference value is as follows:

[0016] For various types of pollutant concentration data, calculate the absolute value of the difference between the pollutant concentration reduction value of the pollutant concentration data in each air purification cycle and its pollutant concentration reduction value in any previous air purification cycle as the first absolute value of the difference, and calculate the absolute value of the difference between the pollutant concentration data at the last collection moment in each air purification cycle and its pollutant concentration data at the last collection moment in any previous air purification cycle as the second absolute value of the difference;

[0017] For each air purification cycle, calculate the sum of all the first absolute values of the differences between the air purification cycle and any previous air purification cycle as the first sum value, calculate the sum of all the second absolute values of the differences between the air purification cycle and any previous air purification cycle as the second sum value, and use the product between the first sum value and the second sum value as the pollutant treatment efficiency difference coefficient between the air purification cycle and any previous air purification cycle;

[0018] Use the average value of all the pollutant treatment efficiency difference coefficients of each air purification cycle as the average pollutant treatment efficiency difference value of each air purification cycle.

[0019] Furthermore, the method for obtaining the pollutant treatment factor is as follows:

[0020] For various types of pollutant concentration data, calculate the ratio of the pollutant concentration reduction value of the pollutant concentration data in each air purification cycle to the duration of the air purification cycle, and use it as the pollutant treatment factor of various types of pollutant concentration data in each air purification cycle.

[0021] Further, the calculation formula for the comprehensive pollutant treatment factor is as follows: In the formula, Z is the comprehensive pollutant treatment factor for each air purification cycle; N is the number of types of pollutant concentration data, V n is the pollutant treatment factor for the nth type of pollutant concentration data in each air purification cycle, W is the average power for each air purification cycle, and t represents the duration of each air purification cycle.

[0022] Further, the method for obtaining the initial fan wind speed value is as follows:

[0023] For the fan wind speed values in each air purification cycle, count the number of times the fan wind speed value appears in all previous air purification cycles as the cycle occurrence times of the fan wind speed value for each air purification cycle, and regard all previous air purification cycles in which the fan wind speed value appears as the same-speed air purification cycles for each air purification cycle;

[0024] Calculate the wind speed preference coefficient for the fan wind speed value in each air purification cycle. The calculation formula is as follows: In the formula, YX is the wind speed preference coefficient for the fan wind speed value in each air purification cycle; U is the cycle occurrence times of the fan wind speed value for each air purification cycle, Z u is the comprehensive pollutant treatment factor for the u-th same-speed air purification cycle in each air purification cycle, C u is the difference value of the average pollutant treatment efficiency for the u-th same-speed air purification cycle in each air purification cycle;

[0025] For the wind speed preference coefficients of the fan wind speed values in all previous air purification cycles for each air purification cycle, take the fan wind speed value with the largest wind speed preference coefficient as the initial fan wind speed value for each air purification cycle.

[0026] Further, the method for obtaining the average decline rate of the air pollutant treatment rate is as follows:

[0027] For each type of pollutant concentration data, calculate the absolute value of the difference between the pollutant concentration data at the first collection moment in each air purification cycle and the pollutant concentration data at the next adjacent collection moment as the third absolute value of the difference, and calculate the absolute value of the difference between the pollutant concentration data at the last collection moment in each air purification cycle and the pollutant concentration data at the previous adjacent collection moment as the fourth absolute value of the difference;

[0028] Calculate the absolute value of the difference between the third absolute value of the difference and the fourth absolute value of the difference as the fifth absolute value of the difference, and calculate the ratio of the fifth absolute value of the difference to the third absolute value of the difference as the decline rate of the air pollutant treatment rate for each type of pollutant concentration data in each air purification cycle;

[0029] Calculate the mean value of the decline rate of the air pollutant treatment rate for all categories of pollutant concentration data in each air purification cycle as the average decline rate of the air pollutant treatment rate for each air purification cycle.

[0030] Further, the obtaining of the preferred fan wind speed value for each air purification cycle includes:

[0031] Calculate the air purifier wind speed adjustment factor for each air purification cycle, and the calculation formula is: In the formula, f is the air purifier wind speed adjustment factor for each air purification cycle; is the value of the concentration data of the nth type of pollutant at the last collection moment in each air purification cycle, is the value of the concentration data of the nth type of pollutant at the first collection moment in each air purification cycle, N is the number of categories of pollutant concentration data, and X is the average decline rate of the air pollutant treatment rate for each air purification cycle;

[0032] For each air purification cycle, calculate the difference between the preset constant and the air purifier wind speed adjustment factor, and calculate the product of the initial fan wind speed value and the difference as the preferred fan wind speed value for each air purification cycle.

[0033] In a second aspect, an embodiment of the present application provides an energy-saving control device for an air purifier, including a memory, a processor, and a computer program stored in the memory and running on the processor. When the processor executes the computer program, it implements the steps of the energy-saving control method for an air purifier as described in any one of the above.

[0034] In a third aspect, an embodiment of the present application provides an energy-saving control system for an air purifier, and the system includes:

[0035] A data acquisition module for collecting pollutant concentration data of the air purifier at each collection moment, the fan wind speed value and the average power in each air purification cycle;

[0036] An initial fan speed acquisition module for an air purifier, which is used to obtain the pollutant concentration reduction values of various pollutant concentration data in each air purification cycle based on the difference in pollutant concentration data at the start and end of the air purification cycle; obtain the average pollutant treatment efficiency difference value of each air purification cycle based on the difference between the pollutant concentration reduction values and the difference in the pollutant concentration data of various pollutants at the end between any two air purification cycles; obtain the pollutant treatment factor of various pollutant concentration data in each air purification cycle based on the pollutant concentration reduction value and the duration of the air purification cycle; obtain the comprehensive pollutant treatment factor of each air purification cycle based on the pollutant treatment factor, the average power and the duration of the air purification cycle; obtain the initial fan speed value of each air purification cycle based on the comprehensive pollutant treatment factor, the average pollutant treatment efficiency difference value and the occurrence times of each fan speed value;

[0037] An energy-saving control module for an air purifier, which is used to obtain the average decline degree of the air pollutant treatment rate based on the ratio of the change in pollutant concentration data at the start and end of the air purification cycle to the change in pollutant concentration data at the start; obtain the preferred fan speed value of each air purification cycle based on the average decline degree of the air pollutant treatment rate, the magnitude relationship between the pollutant concentration data and the initial fan speed value, and perform energy-saving control on the air purifier.

[0038] The present application has at least the following beneficial effects:

[0039] In the present application, first, various pollutant concentration data in the purification process of the air purifier, as well as the fan speed value and average power in each purification cycle are obtained, the pollutant concentration reduction values of various pollutant concentration data in each air purification cycle are calculated, and an average pollutant treatment efficiency difference value is further constructed, which reflects the difference in the purification efficiency between each air purification cycle and the previous air purification cycle. A comprehensive pollutant treatment factor is further constructed, which reflects the comprehensive situation of the air purifier in treating air pollutants, so as to select the initial fan speed value of the air purifier in each air purification cycle; and according to the difference between the pollutant concentration data and the initial fan speed value, the preferred fan speed value of the air purifier in each air purification cycle is selected, and energy-saving control is performed on the air purifier, completing the adaptive adjustment of the fan speed of the air purifier, improving the air purification efficiency of the air purifier, and reducing energy waste. Description of the Drawings

[0040] To more clearly illustrate the technical solutions and advantages in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0041] Figure 1 It is a flowchart of the steps of an energy-saving control method for an air purifier provided in an embodiment of the present application;

[0042] Figure 2 It is a flowchart for obtaining the preferred fan wind speed value provided in an embodiment of the present application. Detailed implementation manners

[0043] In order to further elaborate on the technical means and effects adopted by the present application to achieve the intended invention purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, detail the specific implementation manners, structures, features and effects of an energy-saving control method, device and system for an air purifier proposed according to the present application. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures or characteristics in one or more embodiments can be combined in any suitable form.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs.

[0045] The following will specifically describe the specific solutions of an energy-saving control method, device and system for an air purifier provided by the present application in conjunction with the accompanying drawings.

[0046] Please refer to Figure 1 , which shows a flowchart of the steps of an energy-saving control method for an air purifier provided in an embodiment of the present application. The method includes the following steps:

[0047] Step S001, collect the pollutant concentration data, the fan wind speed value and the average power in each air purification cycle at each collection moment of the air purifier.

[0048] Use the built-in intelligent sensor of the air purifier to collect the PM2.5 concentration data and the VOC concentration data. The PM2.5 concentration data and the VOC concentration data are collectively referred to as pollutant concentration data. In this embodiment, the interval between each collection moment is 1 s, and the implementer can select other values according to the actual situation.

[0049] After the air purifier in this application is turned on, it has two modes. The first mode is the power-saving mode. At this time, the intelligent sensor in the air purifier will regularly collect various pollutant data in the environment. When the concentration data of any pollutant reaches or exceeds the preset threshold, it will switch to the second mode, that is, the cleaning mode. The cleaning mode adaptively obtains the optimal wind speed according to the types of pollutants in the air and the relevant concentration data to clean the pollutants. When the pollutant concentration is less than the preset qualified threshold of the pollutant concentration, the air purifier automatically switches to the first mode, that is, the power-saving mode.

[0050] According to the above description, the time period from the start of air purification by the air purifier to the moment when all the collected pollutant concentration data is less than the preset qualified threshold of the pollutant concentration is regarded as one air purification cycle. Further, a power sensor is used to obtain the average power of the air purifier in each air purification cycle.

[0051] It should be noted that the preset qualified threshold of the pollutant concentration is set to 20% of the pollutant concentration data collected when the air purifier starts to purify.

[0052] Further, at the start of each air purification cycle, the fan wind speed value of the air purifier is set.

[0053] So far, the pollutant concentration data of the air purifier at each collection moment, the fan wind speed value and the average power in each air purification cycle are obtained.

[0054] Step S002, based on the difference in pollutant concentration data at the start and end of the air purification cycle, obtain the pollutant concentration reduction value of various pollutant concentration data in each air purification cycle; based on the difference between the pollutant concentration reduction values and the difference in the end of various pollutant concentration data between any two air purification cycles, obtain the average efficiency difference value of pollutant treatment in each air purification cycle.

[0055] For an air purifier, the working principle is to suck air into the device through a fan and then purify the air through a filter. The greater the fan wind speed of the air purifier, the faster the air flow through the filter. However, due to the limited surface area of the filter, when the air flow rate is too fast, pollutants may not have enough time to contact the filter, resulting in a decrease in the filtering effect. When the fan wind speed is too small, the pollutants in the air cannot be fully sucked in and filtered through the filter, and the purification efficiency of the pollutants is low. Therefore, optimal control of the fan wind speed can effectively improve the purification efficiency of the air purifier while reducing energy consumption.

[0056] For the concentration data of various pollutants in each air purification cycle of the air purifier, calculate the difference between the pollutant concentration data at the first collection moment and the pollutant concentration data at the last collection moment within the air purification cycle, and use it as the pollutant concentration reduction value of the concentration data of various pollutants in each air purification cycle.

[0057] Further, in order to reflect the difference in the purification efficiency between each air purification cycle and the purification efficiency of the previous air purification cycle, based on the difference in the pollutant concentration reduction values and the difference in the pollutant concentration data, calculate the pollutant treatment efficiency difference coefficient between each air purification cycle of the air purifier and any previous air purification cycle. The acquisition method is as follows: for the concentration data of various pollutants, calculate the absolute value of the difference between the pollutant concentration reduction value of the pollutant concentration data in each air purification cycle and its pollutant concentration reduction value in any previous air purification cycle as the first absolute difference value, and calculate the absolute value of the difference between the pollutant concentration data at the last collection moment in each air purification cycle and the pollutant concentration data at the last collection moment in any previous air purification cycle as the second absolute difference value.

[0058] Further, for each air purification cycle, calculate the sum of all the first absolute difference values between the air purification cycle and any previous air purification cycle as the first sum value, calculate the sum of all the second absolute difference values between the air purification cycle and any previous air purification cycle as the second sum value, and use the product between the first sum value and the second sum value as the pollutant treatment efficiency difference coefficient between the air purification cycle and any previous air purification cycle.

[0059] Further, use the mean value of all the pollutant treatment efficiency difference coefficients of each air purification cycle as the average pollutant treatment efficiency difference value of each air purification cycle.

[0060] It should be noted that when the difference in the air purification efficiency between each air purification cycle and the efficiency of the previous air purification cycle is large, the obtained first absolute difference value and second absolute difference value are large, and at this time, the obtained average pollutant treatment efficiency difference value is large; on the contrary, the obtained average pollutant treatment efficiency difference value is small.

[0061] Thus, the average pollutant treatment efficiency difference value of each air purification cycle is obtained.

[0062] Step S003: Obtain the pollutant treatment factors of various pollutant concentration data in each air purification cycle based on the pollutant concentration reduction value and the duration of the air purification cycle; obtain the comprehensive pollutant treatment factors of each air purification cycle based on the pollutant treatment factors, the average power and the duration of the air purification cycle; obtain the initial fan wind speed value of each air purification cycle based on the comprehensive pollutant treatment factors, the difference value of the average pollutant treatment efficiency, and the occurrence times of each fan wind speed value.

[0063] Further, for various pollutant concentration data, calculate the ratio of the pollutant concentration reduction value of the pollutant concentration data in each air purification cycle to the duration of the air purification cycle as the pollutant treatment factor of various pollutant concentration data in each air purification cycle.

[0064] It should be noted that the fan wind speed values set in different air purification cycles are different, resulting in different durations of each air purification cycle, and thus different pollutant treatment factors for various pollutant concentration data in each air purification cycle. When the fan wind speed value is small, the air purification time is long, the duration of the air purification cycle is long at this time, the obtained pollutant treatment factor is small, and the efficiency of the air purifier in treating pollutants is low; on the contrary, the obtained pollutant treatment factor is large, and the efficiency of the air purifier in treating pollutants is high.

[0065] Further, in order to reflect the comprehensive situation of the air purifier in treating air pollutants in each air purification cycle, based on the pollutant treatment factors, the average power and the duration of the air purification cycle, obtain the comprehensive pollutant treatment factors of each air purification cycle. The calculation formula is: In the formula, Z is the comprehensive pollutant treatment factor of each air purification cycle; N is the number of types of pollutant concentration data, V n is the pollutant treatment factor of the nth type of pollutant concentration data in each air purification cycle, W is the average power of each air purification cycle, and t represents the duration of each air purification cycle.

[0066] It should be noted that for each air purification cycle of the air purifier, when the purification efficiency of the air purification cycle is high, the value of the pollutant treatment factor at this time is large, the duration of each air purification cycle is short, and the average power consumed is small. At this time, the value of the comprehensive pollutant treatment factor obtained is large, and the cleaning efficiency is greater; on the contrary, the value of the comprehensive pollutant treatment factor obtained is small, and the cleaning efficiency is smaller.

[0067] Further, for the fan wind speed values of each air purification cycle, count the number of times the fan wind speed value appears in all the previous air purification cycles as the cycle occurrence times of the fan wind speed value of each air purification cycle, and regard all the air purification cycles in which the fan wind speed value appears before as the same-speed air purification cycles of each air purification cycle.

[0068] Further, calculate the wind speed optimization coefficient of the fan wind speed value for each air purification cycle. The calculation formula is as follows: In the formula, YX is the wind speed optimization coefficient of the fan wind speed value for each air purification cycle; U is the number of occurrences of the cycle of the fan wind speed value for each air purification cycle, and Z u is the comprehensive pollutant treatment factor of the u-th same-speed air purification cycle for each air purification cycle, and C u is the difference value of the average pollutant treatment efficiency of the u-th same-speed air purification cycle for each air purification cycle.

[0069] For the wind speed optimization coefficients of the fan wind speed values of all air purification cycles before each air purification cycle, take the fan wind speed value with the largest wind speed optimization coefficient as the initial fan wind speed value of each air purification cycle.

[0070] Step S004: Based on the difference in the change of pollutant concentration data at the start and end of the air purification cycle, obtain the average decline degree of the air pollutant treatment rate relative to the proportion of the change in pollutant concentration data at the start; based on the decline degree of the air pollutant treatment rate, the magnitude relationship between the pollutant concentration data, and the initial fan wind speed value, obtain the preferred fan wind speed value for each air purification cycle, and perform energy-saving control on the air purifier.

[0071] As the air purifier uses the optimal initial wind speed value for air purification, the pollutant concentration in the air is continuously decreasing. As the pollutant concentration decreases, the contact time between the pollutants in the air and the filter in the air purifier remains unchanged. Therefore, the treatment efficiency of the air purifier for pollutants will also decrease. At this time, if the optimal initial wind speed value is used for air purification again, there will be a phenomenon of energy waste and low treatment efficiency. Therefore, in this application, in order to improve the adaptive regulation of the wind speed of the air purifier according to the concentration change of various pollutants under the initial wind speed value.

[0072] According to the above steps, it can be known that the initial fan wind speed value of the air purifier is obtained according to the air environmental quality. For the pollutant concentration data of various types, calculate the absolute value of the difference between the pollutant concentration data at the first collection moment and the pollutant concentration data at the next adjacent collection moment in each air purification cycle as the third absolute value of the difference, and calculate the absolute value of the difference between the pollutant concentration data at the last collection moment and the pollutant concentration data at the previous adjacent collection moment in each air purification cycle as the fourth absolute value of the difference.

[0073] Further, obtain the average decline degree of the air pollutant treatment rate of the pollutant concentration data of various types in each air purification cycle. The calculation formula is as follows: In the formula, X is the average decline degree of the air pollutant treatment rate of each air purification cycle, and V qsis the absolute value of the third difference of the concentration data of various pollutants in each air purification cycle, V mo is the absolute value of the fourth difference of the concentration data of various pollutants in each air purification cycle.

[0074] It should be noted that when the absolute value of the difference between the absolute value of the third difference and the absolute value of the fourth difference is larger, it indicates that the efficiency of purifying air pollutants in the current air purification cycles decreases. The excessive wind speed of the fan of the air purifier leads to a short contact time between the air pollutants and the filter in the air purifier, resulting in a poor purification effect of the air pollutants. At this time, the decline degree of the air pollutant treatment rate obtained is larger; on the contrary, the decline degree of the air pollutant treatment rate obtained is smaller.

[0075] Calculate the average value of the decline degrees of the air pollutant treatment rates of the concentration data of all categories of pollutants in each air purification cycle as the average decline degree of the air pollutant treatment rate in each air purification cycle.

[0076] Furthermore, calculate the air purifier wind speed adjustment factor for each air purification cycle. The calculation formula is: In the formula, f is the air purifier wind speed adjustment factor for each air purification cycle; is the value of the concentration data of the nth category of pollutants at the last collection moment in each air purification cycle, is the value of the concentration data of the nth category of pollutants at the first collection moment in each air purification cycle, N is the number of categories of pollutant concentration data, and X is the average decline degree of the air pollutant treatment rate in each air purification cycle.

[0077] It should be noted that when the value of is larger and the decline degree of the air pollutant treatment rate is larger, it indicates that the excessive wind speed of the fan of the air purifier leads to a short contact time between the air pollutants and the filter in the air purifier, resulting in a poor purification effect of the air pollutants. At this time, the value of the air purifier wind speed adjustment factor obtained is larger; on the contrary, the value of the air purifier wind speed adjustment factor obtained is smaller.

[0078] Furthermore, obtain the preferred fan wind speed value for each air purification cycle. The calculation formula is: FS ′ = FS×(1 - f); In the formula, FS ′ is the preferred fan wind speed value for each air purification cycle, FS is the initial fan wind speed value for each air purification cycle, and f is the air purifier wind speed adjustment factor for each air purification cycle. Among them, the flow chart for obtaining the preferred fan wind speed value is as Figure 2 shown.

[0079] It should be noted that the larger the value of the air purifier wind speed adjustment factor f, the greater the wind speed of the air purifier fan, resulting in a shorter contact time between air pollutants and the filter in the air purifier, thus leading to a poor purification effect of air pollutants. At this time, the wind speed of the air purifier fan should be reduced, and the obtained preferred fan wind speed value is smaller; conversely, the obtained preferred fan wind speed value is larger.

[0080] Thus, the preferred fan wind speed values for each air purification cycle are obtained. Based on the preferred fan wind speed values, energy-saving control of the air purifier is performed to improve the air purification quality while maintaining the air purification efficiency.

[0081] Based on the same inventive concept as the above method, an embodiment of the present application also provides an energy-saving control device for an air purifier, including a memory, a processor, and a computer program stored in the memory and running on the processor. When the processor executes the computer program, it implements the steps of any one of the above energy-saving control methods for an air purifier.

[0082] Similarly, based on the same inventive concept as the above method, an embodiment of the present application provides an energy-saving control system for an air purifier, and the system includes:

[0083] A data acquisition module, configured to acquire pollutant concentration data of the air purifier at each acquisition moment, the fan wind speed value and the average power in each air purification cycle;

[0084] An air purifier initial fan wind speed acquisition module, configured to obtain the pollutant concentration reduction value of various pollutant concentration data in each air purification cycle based on the difference in pollutant concentration data at the start and end of the air purification cycle; obtain the difference value of the average pollutant treatment efficiency in each air purification cycle based on the difference between the pollutant concentration reduction values and the difference in the pollutant concentration data at the end between any two air purification cycles of various pollutant concentration data; obtain the pollutant treatment factor of various pollutant concentration data in each air purification cycle based on the pollutant concentration reduction value and the duration of the air purification cycle; obtain the comprehensive pollutant treatment factor of each air purification cycle based on the pollutant comprehensive treatment factor, the average pollutant treatment efficiency difference value, and the occurrence times of each fan wind speed value; obtain the initial fan wind speed value of each air purification cycle based on the pollutant comprehensive treatment factor, the average pollutant treatment efficiency difference value, and the occurrence times of each fan wind speed value.

[0085] An energy-saving control module for an air purifier is configured to obtain an average decline degree of the air pollutant treatment rate based on the difference in the change of pollutant concentration data at the start and end of an air purification cycle, with respect to the proportion of the change in pollutant concentration data at the start. Based on the decline degree of the air pollutant treatment rate, the magnitude relationship between the pollutant concentration data, and the initial fan wind speed value, an optimal fan wind speed value for each air purification cycle is obtained to perform energy-saving control on the air purifier.

[0086] It should be noted that the above-mentioned order of the embodiments of the present application is only for description and does not represent the superiority or inferiority of the embodiments. Also, the above describes specific embodiments of this specification. Additionally, the processes depicted in the drawings do not necessarily require the specific order or sequential order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0087] The embodiments in the present application are all described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments.

[0088] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the principles of the present application shall be included within the protection scope of the present application.

Claims

1. An energy-saving control method for an air purifier, characterized in that, The method includes the following steps: Collect various pollutant concentration data, fan wind speed values, and average power in each air purification cycle at each collection time of the air purifier; Based on the difference in pollutant concentration data at the start and end of the air purification cycle, obtain the pollutant concentration reduction value of various pollutant concentration data in each air purification cycle; Based on the difference between the pollutant concentration reduction values and the difference in various pollutant concentration data at the end between any two air purification cycles, obtain the average pollutant treatment efficiency difference value in each air purification cycle; Based on the pollutant concentration reduction value and the duration of the air purification cycle, obtain the pollutant treatment factor of various pollutant concentration data in each air purification cycle; Based on the pollutant treatment factor, the average power, and the duration of the air purification cycle, obtain the comprehensive pollutant treatment factor in each air purification cycle; Based on the comprehensive pollutant treatment factor, the average pollutant treatment efficiency difference value, and the occurrence times of each fan wind speed value, obtain the initial fan wind speed value in each air purification cycle; Based on the difference in the change of pollutant concentration data at the start and end of the air purification cycle, and the proportion relative to the change of pollutant concentration data at the start, obtain the average decline degree of the air pollutant treatment rate; Based on the decline degree of the air pollutant treatment rate, the magnitude relationship between the pollutant concentration data, and the initial fan wind speed value, obtain the preferred fan wind speed value in each air purification cycle, and perform energy-saving control on the air purifier; The calculation formula for the comprehensive pollutant treatment factor is as follows: In the formula, Z is the comprehensive pollutant treatment factor for each air purification cycle; N is the number of types of pollutant concentration data, V n is the pollutant treatment factor for the nth type of pollutant concentration data in each air purification cycle, W is the average power of each air purification cycle, and t represents the duration of each air purification cycle; The method for obtaining the initial fan wind speed value is as follows: Take the number of occurrences of the fan wind speed value in all previous air purification cycles as the cycle occurrence times of the fan wind speed value in each air purification cycle, and take all previous air purification cycles in which the fan wind speed value appears as the same-speed air purification cycles in each air purification cycle; Calculate the wind speed optimization coefficient of the fan wind speed value for each air purification cycle. The calculation formula is as follows: In the formula, YX is the wind speed optimization coefficient of the fan wind speed value for each air purification cycle; U is the number of occurrences of the cycle of the fan wind speed value for each air purification cycle, and Z u is the comprehensive pollutant treatment factor for the u-th same-speed air purification cycle of each air purification cycle, and C u is the difference value of the average pollutant treatment efficiency for the u-th same-speed air purification cycle of each air purification cycle; Take the fan wind speed value with the largest wind speed preference coefficient as the initial fan wind speed value in each air purification cycle.

2. The energy-saving control method of an air purifier according to claim 1, wherein, The method for obtaining the pollutant concentration reduction value is as follows: For various pollutant concentration data in each air purification cycle of the air purifier, calculate the difference between the pollutant concentration data at the first collection time and the pollutant concentration data at the last collection time in the air purification cycle, as the pollutant concentration reduction value of various pollutant concentration data in each air purification cycle.

3. The energy-saving control method of an air purifier according to claim 1, characterized in that, The method for obtaining the average pollutant treatment efficiency difference value is as follows: For various pollutant concentration data, calculate the absolute value of the difference between the pollutant concentration reduction value of the pollutant concentration data in each air purification cycle and its pollutant concentration reduction value in any previous air purification cycle as the first absolute difference value, and calculate the absolute value of the difference between the pollutant concentration data at the last collection time in each air purification cycle and the pollutant concentration data at the last collection time in any previous air purification cycle as the second absolute difference value; For each air purification cycle, calculate the sum of the absolute values of all first differences between the air purification cycle and any previous air purification cycle as the first sum value, calculate the sum of the absolute values of all second differences between the air purification cycle and any previous air purification cycle as the second sum value, and take the product between the first sum value and the second sum value as the pollutant treatment efficiency difference coefficient between the air purification cycle and any previous air purification cycle; Take the mean value of all the pollutant treatment efficiency difference coefficients of each air purification cycle as the average pollutant treatment efficiency difference value of each air purification cycle.

4. The energy-saving control method of an air purifier according to claim 1, characterized in that, The method for obtaining the pollutant treatment factor is as follows: For various pollutant concentration data, calculate the ratio between the pollutant concentration reduction value of the pollutant concentration data in each air purification cycle and the duration of the air purification cycle as the pollutant treatment factor of various pollutant concentration data in each air purification cycle.

5. The energy-saving control method of an air purifier according to claim 1, characterized in that The method for obtaining the average decline rate of the air pollutant treatment rate is as follows: For various pollutant concentration data, calculate the absolute value of the difference between the pollutant concentration data at the first collection moment of each air purification cycle and the pollutant concentration data at the next adjacent collection moment as the third absolute difference value, and calculate the absolute value of the difference between the pollutant concentration data at the last collection moment of each air purification cycle and the pollutant concentration data at the previous adjacent collection moment as the fourth absolute difference value; Calculate the absolute value of the difference between the third absolute difference value and the fourth absolute difference value as the fifth absolute difference value, and calculate the ratio between the fifth absolute difference value and the third absolute difference value as the decline rate of the air pollutant treatment rate of various pollutant concentration data in each air purification cycle; Calculate the mean value of the decline rates of the air pollutant treatment rates of all categories of pollutant concentration data in each air purification cycle as the average decline rate of the air pollutant treatment rate of each air purification cycle.

6. The energy-saving control method of an air purifier according to claim 1, characterized in that The obtaining of the preferred fan wind speed value for each air purification cycle includes: Calculate the air purifier wind speed adjustment factor for each air purification cycle. The calculation formula is as follows: In the formula, f is the air purifier wind speed adjustment factor for each air purification cycle; is the value of the concentration data of the nth type of pollutant at the last collection moment of each air purification cycle, is the value of the concentration data of the nth type of pollutant at the first collection moment of each air purification cycle. N is the number of categories of pollutant concentration data, and X is the average decline rate of the air pollutant treatment rate for each air purification cycle; For each air purification cycle, calculate the difference between the preset constant and the air purifier wind speed adjustment factor, and calculate the product of the initial fan wind speed value and the difference as the preferred fan wind speed value for each air purification cycle.

7. An energy-saving control device for an air purifier, comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the computer program, it implements the steps of an energy-saving control method for an air purifier as described in any one of claims 1-6.

8. An energy-saving control system for an air purifier, which implements the energy-saving control method for an air purifier as described in claim 1, characterized in that, The control system includes: A data acquisition module for acquiring the pollutant concentration data of the air purifier at each collection moment, the fan wind speed value and the average power in each air purification cycle; An initial fan speed acquisition module for an air purifier, which is used to obtain the pollutant concentration reduction values of various pollutant concentration data in each air purification cycle based on the difference in pollutant concentration data at the start and end of the air purification cycle; to obtain the average difference in pollutant treatment efficiency for each air purification cycle based on the difference between the pollutant concentration reduction values and the difference in various pollutant concentration data at the end between any two air purification cycles; to obtain the pollutant treatment factors of various pollutant concentration data in each air purification cycle based on the pollutant concentration reduction values and the duration of the air purification cycle; to obtain the comprehensive pollutant treatment factors for each air purification cycle based on the pollutant treatment factors, the average power and the duration of the air purification cycle; and to obtain the initial fan speed values for each air purification cycle based on the comprehensive pollutant treatment factors, the average difference in pollutant treatment efficiency and the occurrence times of each fan speed value. An energy-saving control module for an air purifier, which is used to obtain the average decline degree of the air pollutant treatment rate based on the ratio of the change in pollutant concentration data at the start and end of the air purification cycle to the change in pollutant concentration data at the start; and to obtain the preferred fan speed values for each air purification cycle based on the average decline degree of the air pollutant treatment rate, the magnitude relationship between the pollutant concentration data and the initial fan speed values, so as to perform energy-saving control on the air purifier.

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