Control method and system of air conditioner

Abstract

The invention discloses a control method and system for an air conditioner, and the method comprises the steps: obtaining the temperature of an inner pipe of an evaporator, and obtaining the temperature of the inner pipe; whether the inner pipe temperature is smaller than or equal to a first preset inner pipe temperature or not is judged; if the inner pipe temperature is smaller than or equal to the first preset inner pipe temperature, the ion sterilization device is adjusted to be in a common sterilization mode, and the fresh air device is turned off; and if the inner pipe temperature is larger than the first preset inner pipe temperature, the ion sterilization device is adjusted to be in a powerful sterilization mode, and the fresh air device is started. Through interaction of ions and pollutants, decomposition and falling of dirt and frost are accelerated, and the self-cleaning efficiency of the air conditioner is improved. The ion sterilization technology can effectively kill bacteria and viruses on the surface of the evaporator, and therefore the air quality can be guaranteed. Meanwhile, under the conditions that the temperature of the inner pipe rises and the load of the inner unit is increased, fresh air is introduced to cool the evaporator, and therefore it can be guaranteed that the self-cleaning process of the evaporator is stable and reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, and particularly relates to a control method and system of an air conditioner. BACKGROUND

[0002] As an indispensable temperature regulating device in modern buildings and home environments, air conditioning equipment is prone to accumulate dust, bacteria and other microbial pollutants on the surface of its core heat exchange component, evaporator, due to air circulation during long-term operation. Especially in humid environments (such as plum rain season, southern high humidity areas), the condensate water on the surface of the evaporator provides a breeding ground for the attachment and reproduction of pollutants, resulting in a significant increase in the rate of dust clumping and bacterial growth, forming a stubborn dirt layer and microbial community.

[0003] The accumulation of the above-mentioned pollutants will cause multiple problems: on the one hand, the dirt layer on the surface of the evaporator will directly hinder the heat exchange between the refrigerant and the air, resulting in a significant decrease in the heat exchange efficiency of the air conditioner, which not only affects the refrigeration / heating effect, but also forces the air conditioning system to be in a high load operation state for a long time, indirectly increasing energy consumption; on the other hand, the accumulated bacteria, mold and other microorganisms will spread to the indoor space with the airflow during air conditioning, resulting in deterioration of indoor air quality. Long-term exposure to such polluted air may induce respiratory infections, allergies and other health problems, making it difficult to meet the demand for indoor air cleanliness in home, medical, office and other scenarios.

[0004] To solve the evaporator pollution problem, the self-cleaning function of the air conditioner has gradually become one of the core configurations of modern air conditioning systems. At present, the traditional air conditioner self-cleaning function mainly adopts two technical paths: one is high-temperature defrosting cleaning, which controls the air conditioner to switch to the heating mode, so that the temperature of the evaporator rises to a certain threshold, and the high temperature is used to melt the surface frost and flush away part of the dirt; the other is physical cleaning, which sets up mechanical structures such as brushes and scrapers beside the evaporator to physically scrape the surface of the evaporator to remove pollutants regularly.

[0005] However, the above-mentioned traditional self-cleaning methods still have significant technical defects, which are difficult to balance the cleaning effect, energy consumption control and sterilization demand:

[0006] Low cleaning efficiency: high-temperature defrosting cleaning needs to go through the complete cycle of frosting and defrosting, and the time of a single cleaning usually exceeds 30 minutes, and only the loose dirt on the surface can be removed, and the stubborn dirt clumps in the gap between the evaporator fins have limited cleaning effect; the physical cleaning structure is prone to incomplete cleaning due to brush wear and scraper jam, and the cleaning ability continues to decline after long-term use.

[0007] High energy consumption: During the high-temperature defrosting process, the air conditioner needs to output additional electric energy to maintain the high-temperature state of the evaporator. According to the measured data, the energy consumption of a single defrosting and cleaning is about 1.5-2 times that of the conventional refrigeration mode, and long-term use will significantly increase the user's electricity cost; the driving motor of the physical cleaning structure also needs to consume electric energy continuously, further increasing the system energy consumption.

[0008] Poor sterilization effect: The maximum temperature of high-temperature defrosting is usually not more than 50℃, and the duration is short, which can only inhibit the activity of part of bacteria and cannot completely kill high-temperature-resistant bacteria and viruses (such as influenza virus, Escherichia coli, etc.); physical cleaning can only remove pollutants and cannot inactivate microorganisms on the surface and inside of the evaporator, so the microorganisms can still rapidly reproduce after cleaning, which is difficult to meet the stringent requirements of medical places, maternity rooms and other places for high-cleanliness environment. SUMMARY

[0009] The purpose of the present application is to provide a control method and system of an air conditioner, which aims to solve the problems of low cleaning efficiency, high energy consumption and poor sterilization effect of the existing self-cleaning mode.

[0010] The present application provides a control method of an air conditioner, the air conditioner comprising a shell, an evaporator, a fresh air device and an ion sterilization device arranged in the shell, the method comprising:

[0011] obtaining the temperature of the inner tube of the evaporator to obtain the inner tube temperature;

[0012] determining whether the inner tube temperature is less than or equal to a first preset inner tube temperature;

[0013] if the inner tube temperature is less than or equal to the first preset inner tube temperature, adjusting the ion sterilization device to a normal sterilization mode and closing the fresh air device;

[0014] if the inner tube temperature is greater than the first preset inner tube temperature, adjusting the ion sterilization device to a strong sterilization mode and opening the fresh air device; the ion concentration output by the strong sterilization mode is higher than that output by the normal sterilization mode.

[0015] Further, the fresh air device is provided with a fresh air outlet and a fresh air outlet baffle for adjusting the opening degree of the fresh air outlet, and the method further comprises the following steps after adjusting the ion sterilization device to the strong sterilization mode and opening the fresh air device:

[0016] determining whether the inner tube temperature is less than or equal to a second preset inner tube temperature; wherein the second preset inner tube temperature is greater than the first preset inner tube temperature;

[0017] if the inner tube temperature is less than or equal to the second preset inner tube temperature, opening the fresh air outlet baffle to a first angle;

[0018] If the inner tube temperature is greater than a second preset inner tube temperature, an electric current value of the air conditioner and an outdoor environment temperature are obtained, and an angle of a fresh air outlet baffle is adjusted according to the electric current value and a mode of the fresh air device is adjusted according to the outdoor environment temperature.

[0019] Further, the opening of the fresh air outlet baffle to the first angle comprises:

[0020] An outdoor environment temperature is obtained.

[0021] It is judged whether the outdoor environment temperature is less than or equal to a first preset environment temperature.

[0022] If the outdoor environment temperature is less than or equal to the first preset environment temperature, the fresh air device is adjusted to a low-speed mode.

[0023] If the outdoor environment temperature is greater than the first preset environment temperature, it is judged whether the outdoor environment temperature is less than or equal to a second preset environment temperature; wherein the second preset environment temperature is greater than the first preset environment temperature.

[0024] If the outdoor environment temperature is less than or equal to the second preset environment temperature, the fresh air device is adjusted to a medium-speed mode.

[0025] If the outdoor environment temperature is greater than the second preset environment temperature, the fresh air device is adjusted to a high-speed mode.

[0026] Further, the adjustment of the angle of the fresh air outlet baffle according to the electric current value comprises:

[0027] It is judged whether the electric current value of the air conditioner is less than or equal to a first preset electric current value.

[0028] If the electric current value of the air conditioner is less than or equal to the first preset electric current value, the fresh air outlet baffle is opened to a second angle.

[0029] If the electric current value of the air conditioner is greater than the first preset electric current value, it is judged whether the electric current value of the air conditioner is less than or equal to a second preset electric current value; wherein the second preset electric current value is greater than the first preset electric current value.

[0030] If the electric current value of the air conditioner is less than or equal to the second preset electric current value, the fresh air outlet baffle is opened to a third angle.

[0031] If the electric current value of the air conditioner is greater than the second preset electric current value, the fresh air outlet baffle is opened to a fourth angle.

[0032] Further, 0° < the first angle < the second angle < the third angle < the fourth angle < 90°.

[0033] Further, the mode of the fresh air device is adjusted according to the outdoor environment temperature, comprising:

[0034] determining whether the outdoor environment temperature is less than or equal to a third preset environment temperature;

[0035] if the outdoor environment temperature is less than or equal to the third preset environment temperature, the fresh air device is adjusted to a high-speed mode;

[0036] if the outdoor environment temperature is greater than the third preset environment temperature, it is determined whether the outdoor environment temperature is less than or equal to a fourth preset environment temperature; wherein the fourth preset environment temperature is greater than the third preset environment temperature;

[0037] if the outdoor environment temperature is less than or equal to the fourth preset environment temperature, the fresh air device is adjusted to a medium-speed mode;

[0038] if the outdoor environment temperature is greater than the fourth preset environment temperature, the fresh air device is adjusted to a low-speed mode.

[0039] Further, the ion sterilization device comprises: a positive ion sterilization component, a negative ion sterilization component and an ion sterilization component, and the ion sterilization device is adjusted to a normal sterilization mode, comprising:

[0040] the positive ion sterilization component is turned on to a low concentration mode, the negative ion sterilization component is turned on to a medium concentration mode, and the ion sterilization component is turned off.

[0041] Further, the ion sterilization device comprises: a positive ion sterilization component, a negative ion sterilization component and an ion sterilization component, and the ion sterilization device is adjusted to a normal sterilization mode, comprising:

[0042] determining whether the inner tube temperature is less than or equal to a second preset inner tube temperature; wherein the second preset inner tube temperature is greater than the first preset inner tube temperature;

[0043] if the inner tube temperature is less than or equal to the second preset inner tube temperature, the bacteria concentration and virus concentration on the evaporator are obtained, and the mode of the positive ion sterilization component, the negative ion sterilization component and the ion sterilization component is adjusted according to the bacteria concentration and the virus concentration;

[0044] if the inner tube temperature is greater than the second preset inner tube temperature, the positive ion sterilization component is turned on to a low concentration mode, the negative ion sterilization component is turned off, and the ion sterilization component is turned on to a low concentration mode.

[0045] Further, the obtaining of the bacteria concentration and the virus concentration on the evaporator and the adjusting of the mode of the positive ion sterilization component, the negative ion sterilization component and the plasma sterilization component according to the bacteria concentration and the virus concentration comprises:

[0046] obtaining the bacteria concentration and the virus concentration on the evaporator;

[0047] judging whether the bacteria concentration is greater than a predetermined bacteria concentration and whether the virus concentration is greater than a predetermined virus concentration;

[0048] if the bacteria concentration is greater than the predetermined bacteria concentration and the virus concentration is less than or equal to the predetermined virus concentration, turning on the positive ion sterilization component to a high concentration mode, turning off the negative ion sterilization component and turning on the plasma sterilization component to a medium concentration mode;

[0049] if the bacteria concentration is less than or equal to the predetermined bacteria concentration and the virus concentration is greater than the predetermined virus concentration, turning off the positive ion sterilization component, turning on the negative ion sterilization component to a medium concentration mode and turning on the plasma sterilization component to a high concentration mode;

[0050] if the bacteria concentration is greater than the predetermined bacteria concentration and the virus concentration is greater than the predetermined virus concentration, turning on the positive ion sterilization component to a high concentration mode, turning off the negative ion sterilization component and turning on the plasma sterilization component to a high concentration mode;

[0051] if the bacteria concentration is less than or equal to the predetermined bacteria concentration and the virus concentration is less than or equal to the predetermined virus concentration, turning off the positive ion sterilization component, turning on the negative ion sterilization component to a high concentration mode and turning off the plasma sterilization component.

[0052] The embodiment of the present application further provides a control system of an air conditioner, the air conditioner comprising a shell, an evaporator, a fresh air device and an ion sterilization device arranged in the shell, and the control system comprising:

[0053] a temperature obtaining unit for obtaining the temperature of an inner tube of the evaporator to obtain an inner tube temperature;

[0054] a judging unit for judging whether the inner tube temperature is less than or equal to a first preset inner tube temperature;

[0055] a closing unit for, if the inner tube temperature is less than or equal to the first preset inner tube temperature, adjusting the ion sterilization device to a normal sterilization mode and closing the fresh air device;

[0056] The opening unit is used for adjusting the ion sterilization device to a strong sterilization mode and opening the fresh air device if the inner tube temperature is greater than the first preset inner tube temperature.

[0057] The application discloses a control method and system of an air conditioner, comprising: acquiring the temperature of an inner tube of an evaporator to obtain an inner tube temperature; judging whether the inner tube temperature is less than or equal to a first preset inner tube temperature; adjusting the ion sterilization device to a normal sterilization mode and closing the fresh air device if the inner tube temperature is less than or equal to the first preset inner tube temperature; adjusting the ion sterilization device to a strong sterilization mode and opening the fresh air device if the inner tube temperature is greater than the first preset inner tube temperature. The application accelerates the decomposition and shedding of dirt and frost through the interaction between ions and pollutants, and improves the self-cleaning efficiency of the air conditioner. The ion sterilization technology can effectively kill bacteria and viruses on the surface of the evaporator, thereby ensuring the air quality. Meanwhile, in the case of an increase in the inner tube temperature and the load of the inner unit, the fresh air is introduced to cool the evaporator, thereby ensuring the stability and reliability of the self-cleaning process of the evaporator and reducing the energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0058] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0059] Figure 1 The structural schematic diagram of the air conditioner from a first perspective;

[0060] Figure 2 The structural schematic diagram of the air conditioner from a second perspective;

[0061] Figure 3 The structural schematic diagram of the fresh air device;

[0062] Figure 4 The flow schematic diagram of the control method of the air conditioner;

[0063] Figure 5 Another flow schematic diagram of the control method of the air conditioner;

[0064] Figure 6 The structural schematic diagram of the ion sterilization device;

[0065] Figure 7 The structural schematic diagram of the control system of the air conditioner;

[0066] Explanation of the reference signs in the drawings:

[0067] 1, housing; 2, evaporator; 3, fresh air device; 4, ion sterilization device; 5, fresh air outlet; 6, fresh air outlet damper; 7, evaporator indoor temperature sensing bag; 8, positive ion sterilization assembly; 9, negative ion sterilization assembly; 10, plasma sterilization assembly. DETAILED DESCRIPTION

[0068] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0069] It should be understood that when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of described features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0070] It should also be understood that the terms used in the present application specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0071] It should be further understood that the term "and / or" used in the present application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0072] Please refer to Figures 1-5 The present embodiment provides a control method of an air conditioner, the air conditioner comprising a housing 1, an evaporator 2, a fresh air device 3 and an ion sterilization device 4 arranged in the housing 1. Specifically, the evaporator 2 is arranged on the side of the fresh air device 3, the fresh air device 3 is provided with a fresh air outlet 5 and a fresh air outlet damper 6 for adjusting the opening degree of the fresh air outlet 5, and the ion sterilization device 4 is arranged on the side of the fresh air outlet 5 close to the evaporator 2.

[0073] The method comprises the following steps:

[0074] S101: Obtain the temperature of the inner tube of the evaporator to obtain the inner tube temperature;

[0075] In the indoor unit structure of the air conditioning equipment, the evaporator indoor temperature sensing bag 7 is fixedly installed on a U-shaped bent pipe of the evaporator. The sensing bag is made of high-precision NTC thermistor material, the detection end thereof is directly in contact with the surface of the U-shaped bent pipe of the evaporator, and the actual temperature of the inner pipe of the evaporator can be sensed in real time. After the air conditioner starts the self-cleaning function and enters the heating high-temperature sterilization stage, the control unit establishes an electrical connection with the evaporator indoor temperature sensing bag 7 through a wire, continuously receives the resistance value signal output by the temperature sensing bag at a collection frequency of 1 time / 30 seconds, and converts the resistance value signal into a corresponding temperature value, so as to obtain the temperature of the inner pipe of the evaporator and obtain the inner pipe temperature data.

[0076] S102: determining whether the inner pipe temperature is less than or equal to a first preset inner pipe temperature;

[0077] Specifically, the first preset inner pipe temperature is set to 55 DEG C. The temperature threshold is determined through multiple tests and is the core basis for distinguishing between the ordinary sterilization mode and the strong sterilization mode. The entire judgment process is realized by the cooperative work of the evaporator indoor temperature sensing bag 7 and the control unit. After the air conditioner starts the self-cleaning function and completes the refrigeration dewing and frosting stage, the system automatically switches to the heating high-temperature sterilization stage. At this time, the evaporator indoor temperature sensing bag 7 installed on the U-shaped bent pipe of the evaporator starts to collect the inner pipe temperature of the evaporator in real time. The temperature sensing bag converts the temperature signal into an electrical signal and transmits it to the control unit at a frequency of 1 time / 30 seconds. The control unit receives the signal and converts it into a specific temperature value, and then performs the operation of determining whether the inner pipe temperature is less than or equal to the first preset inner pipe temperature (55 DEG C).

[0078] When the control unit determines that the collected inner pipe temperature is less than or equal to 55 DEG C, the system determines that the current evaporator is in a low-load sterilization interval. At this time, there is no need to start the high-energy-consumption strong sterilization mode and the fresh air auxiliary function. The control unit immediately outputs a control instruction: only start the ordinary sterilization mode of the multi-ion sterilization device. In this mode, the current output of the multi-ion device is low, and the ion is released at the basic power to achieve preliminary sterilization. At the same time, the fresh air device and the fresh air outlet damper motor are kept in the closed state to avoid the interference of the fresh air introduction on the temperature field of the evaporator and ensure that the inner pipe temperature is stably maintained in the interval suitable for ordinary sterilization. In this process, the control unit continuously receives the inner pipe temperature data transmitted by the evaporator indoor temperature sensing bag 7, and the operation of determining whether the inner pipe temperature is less than or equal to 55 DEG C is repeated every 30 seconds. If the inner pipe temperature exceeds 55 DEG C in the subsequent monitoring, the mode switching logic is triggered. The entire judgment process provides accurate temperature basis for the start and stop of the subsequent sterilization mode and fresh air function, and effectively balances the sterilization effect and energy consumption control.

[0079] It should be noted that the actual value of the first preset inner pipe temperature can be determined according to the actual scene.

[0080] S103: If the inner tube temperature is less than or equal to the first preset inner tube temperature, the ion sterilization device is adjusted to a normal sterilization mode, and the fresh air device is turned off.

[0081] In some embodiments, referring to Figure 6 , the ion sterilization device 4 includes a positive ion sterilization component 8, a negative ion sterilization component 9, and an ion plasma sterilization component 10, and adjusting the ion sterilization device to the normal sterilization mode includes:

[0082] turning on the positive ion sterilization component to a low concentration mode, turning on the negative ion sterilization component to a medium concentration mode, and turning off the ion plasma sterilization component.

[0083] Specifically, the ion sterilization device of the air conditioner integrates the positive ion sterilization component, the negative ion sterilization component, and the ion plasma sterilization component, and each component is connected to the control unit through an independent circuit and can receive control instructions to realize concentration adjustment or start-stop. When the control unit determines that the inner tube temperature of the evaporator is less than or equal to the first preset inner tube temperature (55℃), the system automatically triggers the normal sterilization mode adjustment logic, and the specific operation is as follows: the control unit outputs a low-concentration driving signal to the positive ion sterilization component, the component releases positive ions with a concentration of 500 ions / cm 3 , and realizes basic bacteriostatic effect with low energy consumption; at the same time, the control unit outputs a medium-concentration driving signal to the negative ion sterilization component, the component releases negative ions with a concentration of 1000 ions / cm 3 , which can not only adsorb suspended dust on the surface of the evaporator, but also form a weak electric field with the positive ions to inhibit the reproduction of microorganisms; at the same time, in order to optimize energy consumption and focus on the core sterilization target, the ion plasma sterilization component is controlled to be in an off state. During the above adjustment process, the control unit monitors the current feedback signal of each component in real time to ensure that the concentration output of the positive ion sterilization component and the negative ion sterilization component is stable within the set range, and the ion plasma sterilization component is in a completely off state, so as to accurately realize ion release control in the normal sterilization mode.

[0084] S104: If the inner tube temperature is greater than the first preset inner tube temperature, the ion sterilization device is adjusted to a strong sterilization mode, and the fresh air device is turned on.

[0085] The ion concentration output by the strong sterilization mode is higher than the ion concentration output by the normal sterilization mode. The strong sterilization mode significantly enhances the sterilization effect by increasing the ion concentration.

[0086] In this embodiment, the fresh air device is provided with a fresh air outlet and a fresh air outlet baffle for adjusting the opening degree of the fresh air outlet. After the ion sterilization device is adjusted to the strong sterilization mode and the fresh air device is turned on, the following includes:

[0087] determining whether the inner tube temperature is less than or equal to a second preset inner tube temperature; wherein the second preset inner tube temperature is greater than the first preset inner tube temperature;

[0088] if the inner tube temperature is less than or equal to the second preset inner tube temperature, opening the fresh air outlet baffle to a first angle;

[0089] if the inner tube temperature is greater than the second preset inner tube temperature, obtaining a current value of the air conditioner and an outdoor environment temperature, and adjusting the angle of the fresh air outlet baffle according to the current value and adjusting the mode of the fresh air device according to the outdoor environment temperature.

[0090] Specifically, in the self-cleaning high-temperature sterilization phase of the air conditioner, when the control unit determines that the inner tube temperature of the evaporator is greater than the first preset inner tube temperature (55°C), the ion sterilization device is adjusted to the strong sterilization mode, and the fresh air device is opened at the same time, the system enters the linkage control process of the fresh air device and the inner tube temperature immediately, wherein the second preset inner tube temperature is set to 60°C (determined by test verification, and greater than the first preset inner tube temperature of 55°C, the second preset inner tube temperature can be set according to the actual situation), and the whole control process is realized by relying on the data feedback of the evaporator indoor temperature sensing bag 7, the current detection module and the outdoor environment temperature sensor.

[0091] The control unit first acquires the inner tube temperature of the evaporator in real time through the evaporator indoor temperature sensing bag 7 installed on the U-shaped pipe of the evaporator, and then performs the operation of determining whether the inner tube temperature is less than or equal to the second preset inner tube temperature (60°C). When the determination result is that the inner tube temperature is less than or equal to 60°C, the control unit outputs a control instruction to the fresh air outlet baffle motor of the fresh air device, and drives the fresh air outlet baffle to open to a first angle. The first angle is based on the completely closed (0°) and completely opened (90°) of the fresh air outlet, and is set to 20° (or other angles) after debugging, which can ensure that the high-concentration ions released by the ion sterilization device are uniformly blown to the surface of the evaporator, and can also avoid excessive fresh air entering to cause the inner tube temperature to fluctuate greatly, thereby ensuring the stable operation of the strong sterilization mode.

[0092] If the control unit determines that the inner tube temperature is greater than 60°C, the fine adjustment logic of the fresh air under high load is triggered: on the one hand, the current value (denoted as current A) of the air conditioner is collected through the current detection module, and the preset current threshold (2A < preset current A1 < preset current A2 < 6A) is called for comparison, and then the angle of the fresh air outlet baffle is adjusted according to the current value and the mode of the fresh air device is adjusted according to the outdoor environment temperature.

[0093] Further, after opening the fresh air outlet baffle to the first angle, the following steps are included:

[0094] obtaining an outdoor environment temperature;

[0095] determining whether the outdoor environment temperature is less than or equal to a first preset environment temperature;

[0096] if the outdoor environment temperature is less than or equal to the first preset environment temperature, adjusting the fresh air device to a low-speed mode;

[0097] if the outdoor environment temperature is greater than the first preset environment temperature, determining whether the outdoor environment temperature is less than or equal to a second preset environment temperature; wherein the second preset environment temperature is greater than the first preset environment temperature;

[0098] if the outdoor environment temperature is less than or equal to the second preset environment temperature, adjusting the fresh air device to a medium-speed mode;

[0099] if the outdoor environment temperature is greater than the second preset environment temperature, adjusting the fresh air device to a high-speed mode.

[0100] Specifically, in the high-temperature sterilization phase of the air conditioner self-cleaning, when the control unit determines that the evaporator inner tube temperature is in the interval of 55℃-60℃ (greater than the first preset inner tube temperature 55℃ and less than or equal to the second preset inner tube temperature 60℃), the ion sterilization device is adjusted to a strong sterilization mode and the fresh air device is turned on, and the fresh air outlet baffle is driven to open to a first angle, then the system enters the fresh air device speed adjustment process based on the outdoor environment temperature, wherein the first preset environment temperature is set to 10℃, and the second preset environment temperature is set to 30℃, and the two temperature thresholds are verified by multiple scene tests, which can balance the fresh air introduction effect and the evaporator temperature stability.

[0101] Firstly, the control unit collects real-time outdoor environment temperature data through the outdoor environment temperature sensor configured by the air conditioner, which is installed near the outdoor heat exchanger and can accurately feedback the change of the external environment temperature. The collected temperature data is transmitted to the control unit in the form of electrical signal in real time, providing basis for subsequent speed adjustment. After receiving the data, the control unit preferentially performs the operation of "determining whether the outdoor environment temperature is less than or equal to the first preset environment temperature (10℃)": if the determination result is yes, i.e. the outdoor environment temperature ≤ 10℃, at this time the external air temperature is low, in order to avoid too much cold air entering the indoor unit and causing the evaporator temperature to drop suddenly and affecting the strong sterilization effect, the control unit outputs a low-speed driving instruction to the motor of the fresh air device, adjusts the fresh air device to a low-speed mode, and controls the motor speed at 800r / min-1000r / min, ensuring that the fresh air carries ions to the evaporator at a low flow rate, which neither interferes with the temperature field nor assists the ion diffusion.

[0102] If the control unit determines that the outdoor ambient temperature is greater than 10℃, further operation of "judging whether the outdoor ambient temperature is less than or equal to the second preset ambient temperature (30℃)" is performed: if the determination result is yes, i.e. 10℃ < outdoor ambient temperature ≤ 30℃, at this time the outside air temperature is in the appropriate interval, the control unit outputs a medium-speed driving instruction to the fresh air motor, adjusts the fresh air device to the medium-speed mode, and the motor speed is increased to 1200r / min-1500r / min, so that the high-concentration ions released by the ion sterilization device more evenly cover the evaporator fin gap, and the sterilization effect is strengthened; if the determination result is outdoor ambient temperature > 30℃, the outside air temperature is relatively high, and the fresh air flow needs to be increased to speed up the air circulation on the evaporator surface, the control unit immediately outputs a high-speed driving instruction to the fresh air motor, adjusts the fresh air device to the high-speed mode, and the motor speed is set to 1800r / min-2200r / min, relying on high-flow fresh air to carry away excess heat on the evaporator surface, while ensuring rapid diffusion of ions, achieving the dual goals of sterilization effect and evaporator temperature stability.

[0103] It should be noted that the actual numerical values of the second preset ambient temperature and the first preset ambient temperature can be set according to the actual use scene, and the present application does not limit this.

[0104] In this embodiment, the angle of the fresh air outlet baffle is adjusted according to the current value, including:

[0105] judging whether the current value of the air conditioner is less than or equal to a first preset current value;

[0106] If the current value of the air conditioner is less than or equal to the first preset current value, the fresh air outlet baffle is opened to a second angle;

[0107] If the current value of the air conditioner is greater than the first preset current value, it is judged whether the current value of the air conditioner is less than or equal to a second preset current value; wherein the second preset current value is greater than the first preset current value;

[0108] If the current value of the air conditioner is less than or equal to the second preset current value, the fresh air outlet baffle is opened to a third angle;

[0109] If the current value of the air conditioner is greater than the second preset current value, the fresh air outlet baffle is opened to a fourth angle.

[0110] Specifically, in the air conditioner self-cleaning high-temperature sterilization stage, when the control unit determines that the inner tube temperature of the evaporator is greater than the second preset inner tube temperature (60°C), and the new air outlet baffle angle needs to be adjusted according to the current value of the air conditioner, first, the current running current value of the air conditioner is collected through the current detection module, and the preset current threshold parameter is called, wherein the first preset current value (A1) is set to 3A, and the second preset current value (A2) is set to 4.5A (the actual setting of the first preset current value and the second preset current value can be determined according to the actual use scene), and the test verification range of 2A

[0111] After the control unit obtains the current value, the operation of "judging whether the current value of the air conditioner is less than or equal to the first preset current value (3A)" is performed first: if the determination result is yes, it means that the inner machine load is low at this time, and there is no need to introduce too much new air volume to maintain the stability of the evaporator temperature. The control unit then outputs a driving signal to the new air outlet baffle motor to drive the new air outlet baffle to adjust from the current angle to the second angle (35°). This opening degree can introduce appropriate new air to assist the diffusion of ions released by the ion sterilization device, while avoiding excessive new air volume leading to fluctuations in the inner machine load.

[0112] If the control unit determines that the current value of the air conditioner is greater than the first preset current value (3A), the operation of "judging whether the current value is less than or equal to the second preset current value (4.5A)" is further performed: if the determination result is yes, it means that the inner machine load is at a medium level, and the new air volume needs to be appropriately increased to assist in cooling. The control unit outputs a command to the new air outlet baffle motor to adjust the baffle angle to the third angle (50°), thereby expanding the new air outlet opening to increase the new air introduction volume, which meets the evaporator cooling demand and does not cause the current to further increase due to the sudden increase in new air volume.

[0113] If the control unit determines that the current value of the air conditioner is greater than the second preset current value (4.5A), it means that the indoor unit is in a high load state, and the fresh air volume needs to be maximized to quickly reduce the evaporator temperature and relieve the load pressure. At this time, the control unit outputs a driving instruction to the fresh air outlet damper motor, adjusts the damper angle to the fourth angle (70°), which is close to the fully open state, and can introduce the maximum fresh air volume. Combined with the strong mode of the ion sterilization device, it effectively controls the current and load of the indoor unit, and avoids the overload operation of the equipment. During the entire adjustment process, the control unit receives the angle feedback signal of the fresh air outlet damper in real time, ensures that the damper accurately stays at the target angle, and realizes dynamic adaptation of the fresh air outlet damper angle based on the current value.

[0114] Wherein, 0° < first angle < second angle < third angle < fourth angle < 90°.

[0115] During the entire angle adjustment process, each angle is always maintained within the effective adjustment range of 0°-90°, which not only ensures that the fresh air volume is accurately matched with the working condition, but also avoids the problem of mechanical loss or insufficient fresh air volume caused by excessive opening of the damper, providing angle control protection for the reliability of the self-cleaning process.

[0116] In this embodiment, the mode of the fresh air device is adjusted according to the outdoor environment temperature, including:

[0117] Determine whether the outdoor environment temperature is less than or equal to the third preset environment temperature;

[0118] If the outdoor environment temperature is less than or equal to the third preset environment temperature, adjust the fresh air device to the high-speed mode;

[0119] If the outdoor environment temperature is greater than the third preset environment temperature, determine whether the outdoor environment temperature is less than or equal to the fourth preset environment temperature; wherein the fourth preset environment temperature is greater than the third preset environment temperature;

[0120] If the outdoor environment temperature is less than or equal to the fourth preset environment temperature, adjust the fresh air device to the medium-speed mode;

[0121] If the outdoor environment temperature is greater than the fourth preset environment temperature, adjust the fresh air device to the low-speed mode.

[0122] Specifically, in the air conditioner self-cleaning high-temperature sterilization stage, when the control unit determines that the temperature of the inner tube of the evaporator is greater than the second preset inner tube temperature (60°C), the mode of the fresh air device needs to be adjusted according to the outdoor environment temperature, first, the real-time outdoor environment temperature data is collected by the outdoor environment temperature sensor installed near the heat exchanger of the outdoor unit, and the sensor can accurately feedback the change of the external temperature. At the same time, the control unit calls the preset environment temperature threshold parameter, wherein the third preset environment temperature is set to 10°C, and the fourth preset environment temperature is set to 30°C (the third preset environment temperature and the fourth preset environment temperature can be set according to the actual use scene), and the logic relationship of the third preset environment temperature (10°C) < the fourth preset environment temperature (30°C) is satisfied. The threshold value is determined by multi-region climate test, which can adapt to the cooling demand of the evaporator and the energy consumption control of the fresh air device under different outdoor temperatures.

[0123] After the control unit obtains the outdoor environment temperature data, the operation of "judging whether the outdoor environment temperature is less than or equal to the third preset environment temperature (10°C)" is performed first: if the determination result is yes, it means that the outdoor air temperature is low at this time, and the introduction of low-temperature fresh air can quickly reduce the evaporator temperature and relieve the high load state of the indoor unit. Therefore, the control unit outputs a high-speed driving instruction to the motor of the fresh air device, and adjusts the fresh air device to a high-speed mode, and the motor speed is set to 1800r / min~2200r / min. Through high-speed introduction of sufficient low-temperature fresh air, the evaporator surface is directly affected, and the cooling effect is assisted to realize, and at the same time, the strong mode of the ion sterilization device is matched to ensure that the sterilization efficiency is not affected by temperature fluctuations.

[0124] If the control unit determines that the outdoor environment temperature is greater than the third preset environment temperature (10°C), the operation of "judging whether the outdoor environment temperature is less than or equal to the fourth preset environment temperature (30°C)" is further performed: if the determination result is yes, that is, the outdoor environment temperature is in the interval of 10°C~30°C, at this time, the external air temperature is suitable, and there is no need for high or low speed to balance the cooling demand and energy consumption. The control unit outputs a medium-speed driving instruction to the motor of the fresh air device, and adjusts the fresh air device to a medium-speed mode, and the motor speed is controlled at 1200r / min~1500r / min. Through moderate speed, fresh air is introduced, which can provide stable cooling assistance for the evaporator, avoid energy consumption increase caused by high-speed operation, and ensure that ions cover the whole evaporator evenly with fresh air.

[0125] If the control unit determines that the outdoor environment temperature is greater than the fourth preset environment temperature (30 DEG C), it indicates that the outdoor air temperature is relatively high, and if too much high-temperature fresh air is introduced, it may lead to further increase of the evaporator temperature. Therefore, the control unit outputs a low-speed driving instruction to the fresh air motor to adjust the fresh air device to a low-speed mode, and the motor speed is reduced to 800 r / min to 1000 r / min, so that the evaporator surface air flow is maintained with low-flow fresh air to avoid the high-temperature air from entering in large quantities to intensify the indoor unit load. The evaporator operation reliability is always taken as the core, and through the precise matching of the outdoor environment temperature and the fresh air mode, the balance between the cooling effect and the energy consumption control in the self-cleaning process is realized.

[0126] In some embodiments, the ion sterilization device includes a positive ion sterilization component, a negative ion sterilization component, and a plasma sterilization component. Adjusting the ion sterilization device to a strong sterilization mode includes:

[0127] Determining whether the inner tube temperature is less than or equal to a second preset inner tube temperature; wherein the second preset inner tube temperature is greater than the first preset inner tube temperature;

[0128] If the inner tube temperature is less than or equal to the second preset inner tube temperature, the bacteria concentration and the virus concentration on the evaporator are obtained, and the mode of the positive ion sterilization component, the negative ion sterilization component, and the plasma sterilization component is adjusted according to the bacteria concentration and the virus concentration;

[0129] If the inner tube temperature is greater than the second preset inner tube temperature, the positive ion sterilization component is turned on to a low-concentration mode, the negative ion sterilization component is turned off, and the plasma sterilization component is turned on to a low-concentration mode.

[0130] Specifically, the ion sterilization device of the air conditioner integrates the positive ion sterilization component, the negative ion sterilization component, and the plasma sterilization component. When switching to the strong sterilization mode in the self-cleaning high-temperature sterilization stage, the control unit first relies on the inner tube temperature collected by the evaporator indoor temperature sensing bag 7, and calls preset temperature thresholds. The first preset inner tube temperature is 55 DEG C, and the second preset inner tube temperature is 60 DEG C, which is used as the basis for executing the hierarchical adjustment logic.

[0131] When the control unit determines that the inner tube temperature is less than or equal to the second preset inner tube temperature (60 DEG C), the system starts the pollutant concentration adaptive adjustment process: through the microorganism sensor installed in the evaporator fin gap, the bacteria concentration (detection range 0-1000 CFU / m3) and the virus concentration (detection amount of specific virus marker as the determination basis) on the surface of the evaporator are collected in real time.

[0132] If the control unit determines that the inner tube temperature is greater than the second preset inner tube temperature (60°C), at this time the inner machine is in a high load state, in order to avoid the superposition of energy consumption of the ion assembly in high concentration operation, the control unit executes the low load sterilization strategy: outputting a low concentration driving signal to the positive ion sterilization assembly, so that the ion release concentration is 500 ions / cm 3 , only the basic bacteriostatic effect is maintained; at the same time, the power supply circuit of the negative ion sterilization assembly is cut off, so that it is completely closed, reducing unnecessary energy consumption; for the plasma sterilization assembly, output a low concentration control instruction, the ion release concentration is 1 million active particles / cm 3 , while controlling the energy consumption and retaining a certain virus inactivation ability, ensuring that the evaporator still has basic sterilization effect in the high load stage, and does not increase the running burden of the inner machine.

[0133] In some embodiments, obtaining the concentration of bacteria and the concentration of viruses on the evaporator, and adjusting the mode of the positive ion sterilization assembly, the negative ion sterilization assembly and the plasma sterilization assembly according to the concentration of bacteria and the concentration of viruses comprises:

[0134] Obtaining the concentration of bacteria and the concentration of viruses on the evaporator;

[0135] determining whether the concentration of bacteria is greater than a predetermined concentration of bacteria, and determining whether the concentration of viruses is greater than a predetermined concentration of viruses;

[0136] If the concentration of bacteria is greater than the predetermined concentration of bacteria, and the concentration of viruses is less than or equal to the predetermined concentration of viruses, the positive ion sterilization assembly is turned on to a high concentration mode, the negative ion sterilization assembly is turned off, and the plasma sterilization assembly is turned on to a medium concentration mode;

[0137] If the concentration of bacteria is less than or equal to the predetermined concentration of bacteria, and the concentration of viruses is greater than the predetermined concentration of viruses, the positive ion sterilization assembly is turned off, the negative ion sterilization assembly is turned on to a medium concentration mode, and the plasma sterilization assembly is turned on to a high concentration mode;

[0138] If the concentration of bacteria is greater than the predetermined concentration of bacteria, and the concentration of viruses is greater than the predetermined concentration of viruses, the positive ion sterilization assembly is turned on to a high concentration mode, the negative ion sterilization assembly is turned off, and the plasma sterilization assembly is turned on to a high concentration mode;

[0139] If the concentration of bacteria is less than or equal to the predetermined concentration of bacteria, and the concentration of viruses is less than or equal to the predetermined concentration of viruses, the positive ion sterilization assembly is turned off, the negative ion sterilization assembly is turned on to a high concentration mode, and the plasma sterilization assembly is turned off.

[0140] Specifically, the ion sterilization device of the air conditioner integrates a positive ion sterilization assembly, a negative ion sterilization assembly, and a plasma sterilization assembly. When switching to a strong sterilization mode in the self-cleaning high-temperature sterilization phase, the control unit first collects the inner tube temperature based on the indoor temperature sensing bag 7 of the evaporator, and calls the preset temperature threshold. The first preset inner tube temperature is 55°C, and the second preset inner tube temperature is 60°C. Based on this, the hierarchical adjustment logic is executed.

[0141] When the control unit determines that the inner tube temperature is less than or equal to the second preset inner tube temperature (60°C), the system starts the pollutant concentration adaptive adjustment process: through the microorganism sensor installed in the evaporator fin gap, the bacterial concentration (detection range 0-1000 CFU / m3) and viral concentration (detection amount of specific viral markers as the basis for determination) on the surface of the evaporator are collected in real time.

[0142] If the bacterial concentration is detected to be >500 CFU / m3 and the viral concentration is not over standard, the control unit outputs a high-concentration driving instruction to the positive ion sterilization assembly. The instruction is transmitted to the positive ion generation module through an independent circuit, so that the ion release concentration of the positive ion sterilization assembly is accurately maintained at 2000 ions / cm3. This concentration can efficiently destroy the phospholipid bilayer structure of the bacterial cell wall, and has a strong killing effect on common pathogenic bacteria such as Escherichia coli and Staphylococcus aureus on the surface of the evaporator, and solves the problem of excessive bacterial concentration.

[0143] At the same time, the control unit outputs a shutdown signal to the negative ion sterilization assembly, cutting off its power supply circuit, to avoid charge neutralization reactions between negative ions and positive ions during sterilization, ensuring that the 2000 ions / cm3 positive ion concentration stably acts on bacteria, without weakening the sterilization efficiency. For the plasma sterilization assembly, the control unit outputs a medium-concentration control instruction to drive it to release active particles at a concentration of 3 million / cm 3 This concentration can assist positive ions in further inhibiting bacterial reproduction, and will not cause unnecessary energy consumption due to excessive plasma concentration, balancing sterilization efficiency and energy consumption while ensuring bacterial removal effect. During the entire adjustment process, the control unit continuously monitors the concentration output state of positive ions and plasma by collecting current feedback data from each assembly, ensuring that each assembly operates stably according to the set mode.

[0144] If the virus concentration is detected to exceed the standard and the bacterial concentration is less than or equal to 500 CFU / m3, the control unit preferentially outputs a high-concentration driving instruction to the plasma sterilization assembly, which acts on the plasma generation module to maintain the active particle concentration released by the plasma generation module at 6 million / cm3. The influenza virus, coronavirus and other viruses on the surface of the evaporator can be inactivated by destroying the virus protein shell and nucleic acid structure, ensuring that the virus loses infectivity. At the same time, the control unit outputs a shutdown signal to the positive ion sterilization assembly to cut off the power supply circuit, because the current bacterial concentration is within the qualified range, and the positive ion is not needed for sterilization, and after shutdown, unnecessary energy consumption can be reduced.

[0145] For the negative ion sterilization assembly, the control unit outputs a medium-concentration control instruction to maintain the ion release concentration at 1000 ions / cm3. This concentration can not only remove suspended particulate matter and virus debris on the surface of the evaporator through the adsorption characteristics of negative ions, but also avoid the charge neutralization reaction between high-concentration negative ions and plasma, ensuring that the inactivation efficiency of the plasma sterilization assembly is not disturbed. During the entire adjustment process, the control unit monitors the current feedback signals of each component in real time to ensure that the plasma sterilization assembly stably outputs 6 million / cm3 of active particles, the positive ion sterilization assembly is completely closed, and the negative ion sterilization assembly maintains a medium-concentration output of 1000 ions / cm3. While accurately responding to viral contamination, energy consumption control and cleaning effect are also considered.

[0146] If the bacterial concentration and the virus concentration both exceed the standard, the control unit outputs a high-concentration driving instruction to the positive ion sterilization assembly, which is transmitted to the positive ion generation module through an independent circuit to maintain the ion release concentration of the positive ion sterilization assembly at 2000 ions / cm3. 3 By destroying the phospholipid bilayer structure of the bacterial cell wall, the positive ion sterilization assembly can effectively kill common pathogenic bacteria such as Escherichia coli and Staphylococcus aureus on the surface of the evaporator, and form a strong inhibition for high bacterial concentration scenarios. At the same time, the control unit outputs a shutdown signal to the negative ion sterilization assembly to cut off the power supply circuit, avoiding unnecessary charge neutralization reactions between negative ions and positive ions, plasma at high concentrations, and ensuring the sterilization efficiency of positive ions and plasma is not weakened.

[0147] Subsequently, the control unit outputs a high concentration control instruction to the plasma sterilization assembly, drives the plasma generation module to release active particles, and makes the concentration reach 6 million / cm3. The plasma at this concentration (containing active components such as hydroxyl radicals and ozone) can quickly act on the protein shell and nucleic acid structure of viruses, causing virus protein denaturation and nucleic acid rupture, effectively inactivating enveloped viruses such as influenza viruses and coronaviruses, and forming synergy with the positive ion sterilization assembly. During the entire adjustment process, the control unit monitors the concentration output state of the positive ion sterilization assembly and the plasma sterilization assembly through current feedback to ensure that the positive ion concentration of 2000 ions / cm3 and the plasma active particle concentration of 6 million / cm3 are stably output, realizing the composite sterilization effect on bacteria and viruses and meeting the evaporator cleaning requirements in high-cleanliness scenarios.

[0148] If the bacterial concentration and viral concentration do not exceed the preset threshold, the control unit first outputs a shutdown instruction to the positive ion sterilization assembly, cuts off its power supply circuit, and makes the positive ion sterilization assembly stop releasing positive ions. Because the current bacterial amount on the evaporator surface is at a low level, there is no need for positive ion to strengthen sterilization, and shutting down the assembly can reduce unnecessary energy consumption. Subsequently, the control unit outputs a high-concentration driving signal to the negative ion sterilization assembly, and the ion release concentration is 2000 ions / cm3. Relying on the adsorption characteristics of high-concentration negative ions, the residual suspended dust and trace pollutants on the evaporator surface are efficiently removed, and the growth of microorganisms is inhibited, avoiding subsequent accumulation of pollutants. For the plasma sterilization assembly, the control unit also outputs a shutdown instruction to make it remain in a stopped state. Because there is no virus exceeding the standard at present, there is no need for plasma to participate in inactivation, and after shutting down, the overall energy consumption of the ion sterilization device can be further reduced to ensure that the balance between energy consumption and effect is realized on the premise of meeting the cleaning requirements. During the entire adjustment process, the control unit monitors the running feedback signals of each component in real time to ensure that the positive ion sterilization assembly and the plasma sterilization assembly are completely closed, and the negative ion sterilization assembly stably maintains a high-concentration output state.

[0149] In this embodiment, in the air conditioner self-cleaning system, in addition to bacterial and viral detection, a dust module (composed of a laser dust sensor, installed on the evaporator inlet side, and having a detection range of 0-500 μg / m 3 , an accuracy of ±10 μg / m 3 ) is additionally provided to monitor the dust concentration of the evaporator surface and the surrounding air in real time. When the dust module detects that the dust concentration is greater than 150 μg / m 3 (preset dust threshold), the control unit will start the corresponding cleaning adjustment logic and form synergy with the ion sterilization assembly and the fresh air device.

[0150] If only dust is detected to be over standard (bacteria and viruses are not over standard), the control unit preferentially outputs a high-concentration driving instruction to the negative ion sterilization assembly, and the ion release concentration is increased to 2000 ions / cm 3 The dust particles are charged and gathered by the electro-adsorption characteristics of the negative ions, and the larger particles are settled on the surface of the evaporator, which is convenient for subsequent cleaning. At the same time, the fresh air outlet baffle is opened to the third angle, and the fresh air device is adjusted to the medium speed mode 1200 r / min-1500 r / min, so that the gathered dust particles are blown away from the evaporator by air flow disturbance and discharged outdoors through the return air system.

[0151] In some embodiments, to solve the problem of cleaning failure caused by microbial sensor failure, the control unit adds a backup detection algorithm module, which is linked with the inner tube temperature sensor and the fresh air filter screen differential pressure sensor (a new component installed between the fresh air inlet and the filter screen, with a detection range of 0-200 Pa and an accuracy of ±5 Pa). The pollution degree is determined by indirect parameters, and the corresponding adjustment logic is triggered.

[0152] When the control unit does not receive valid data from the microbial sensor for 3 times (with an interval of 10 seconds) (or the data is out of the normal range 0-1000 CFU / m 3 ), it is determined that the sensor is faulty, and the backup detection algorithm is automatically activated.

[0153] The control unit continuously collects the inner tube temperature through the indoor temperature sensing bag 7 of the evaporator, and calculates the temperature rise rate in the last 5 minutes. If the rate is <0.5℃ / min, it is determined that the evaporator surface is polluted (bacteria and dust are attached) and the heat exchange efficiency is reduced, and the deep sterilization mode is immediately started. The concentration of the positive ion sterilization assembly is increased to 2200 ions / cm3, the concentration of the plasma sterilization assembly is increased to 7.2 million / cm3, the fresh air outlet baffle is opened to the fourth angle, and the fresh air device is operated at high speed for 15 minutes to strengthen the pollution removal effect.

[0154] If the inner tube temperature rise rate is within the normal range (0.8℃-1.2℃ / min), the control unit reads the data of the fresh air filter screen differential pressure sensor. When the differential pressure is >50 Pa, it is determined that the amount of dust intercepted by the filter screen is over standard (indirectly reflecting the high dust concentration around the evaporator), and the negative ion enhanced adsorption mode is immediately started. The concentration of the negative ion sterilization assembly is increased to 1400 ions / cm3, and the concentrations of the positive ion and plasma sterilization assemblies are maintained at the basic concentration. The fresh air outlet baffle is opened to the third angle, and the dust is removed by the electro-adsorption characteristics of the negative ions, while unnecessary consumption of high-concentration sterilization ions is avoided.

[0155] If the two indicators are in the normal range, the control unit controls the positive ion assembly to maintain the medium concentration mode, the plasma assembly to maintain the medium concentration mode, and the negative ion to maintain the low concentration mode in the balance mode, which is cycled every 30 minutes, to ensure the basic cleaning effect and avoid energy waste.

[0156] The embodiment accelerates the decomposition and shedding of dirt and frost through the interaction of ions and pollutants, improves the self-cleaning efficiency of the air conditioner. The ion sterilization technology can effectively kill bacteria and viruses on the surface of the evaporator, thereby ensuring the air quality. At the same time, in the case of increasing temperature of the inner tube and increasing load of the indoor unit, the evaporator is cooled by introducing fresh air, thereby ensuring the stability and reliability of the evaporator self-cleaning process. By optimizing the cleaning process, the power consumption during the defrosting stage is reduced, and the energy efficiency ratio of the air conditioning system is improved. The temperature sensor monitors the state of the evaporator to realize intelligent start and stop of the self-cleaning function, and prolongs the service life of the equipment. In addition, the size of the opening of the air conditioner fresh air system is judged according to the outside inner tube temperature and the outdoor environment stability, so that the air conditioner fresh air sterilization function does not affect the air conditioner self-cleaning, and solves the problem of increasing current and load caused by heating the evaporator during the air conditioner defrosting stage, improves the reliability of the air conditioner self-cleaning.

[0157] Please refer to Figure 7 The embodiment also provides a control system 200 of an air conditioner, the air conditioner comprising a shell, an evaporator, a fresh air device and an ion sterilization device arranged in the shell, and the control system comprising:

[0158] A temperature acquisition unit 201 is configured to acquire a temperature of an inner tube of the evaporator to obtain an inner tube temperature.

[0159] A judgment unit 202 is configured to judge whether the inner tube temperature is less than or equal to a first preset inner tube temperature.

[0160] A closing unit 203 is configured to adjust the ion sterilization device to a normal sterilization mode and close the fresh air device if the inner tube temperature is less than or equal to the first preset inner tube temperature.

[0161] An opening unit 204 is configured to adjust the ion sterilization device to a strong sterilization mode and open the fresh air device if the inner tube temperature is greater than the first preset inner tube temperature. The ion concentration output by the strong sterilization mode is higher than that output by the normal sterilization mode.

[0162] Further, the fresh air device is provided with a fresh air outlet and a fresh air baffle for adjusting the opening degree of the fresh air outlet, and the opening unit 204 comprises:

[0163] The inner tube temperature judging subunit is configured to judge whether the inner tube temperature is less than or equal to a second preset inner tube temperature; the second preset inner tube temperature is greater than the first preset inner tube temperature.

[0164] The first angle opening subunit is configured to open the fresh air outlet damper to a first angle if the inner tube temperature is less than or equal to the second preset inner tube temperature.

[0165] The angle adjusting subunit is configured to acquire a current value of the air conditioner and an outdoor environment temperature, and adjust the angle of the fresh air outlet damper according to the current value and adjust the mode of the fresh air device according to the outdoor environment temperature if the inner tube temperature is greater than the second preset inner tube temperature.

[0166] Further, the first angle opening subunit comprises:

[0167] The first environment temperature acquiring subunit is configured to acquire an outdoor environment temperature.

[0168] The first environment temperature judging subunit is configured to judge whether the outdoor environment temperature is less than or equal to a first preset environment temperature.

[0169] The low-speed mode adjusting subunit is configured to adjust the fresh air device to a low-speed mode if the outdoor environment temperature is less than or equal to the first preset environment temperature.

[0170] The second environment temperature judging subunit is configured to judge whether the outdoor environment temperature is less than or equal to a second preset environment temperature if the outdoor environment temperature is greater than the first preset environment temperature; the second preset environment temperature is greater than the first preset environment temperature.

[0171] The medium-speed mode adjusting subunit is configured to adjust the fresh air device to a medium-speed mode if the outdoor environment temperature is less than or equal to the second preset environment temperature.

[0172] The high-speed mode adjusting subunit is configured to adjust the fresh air device to a high-speed mode if the outdoor environment temperature is greater than the second preset environment temperature.

[0173] Further, the angle adjusting subunit comprises:

[0174] The first current judging subunit is configured to judge whether the current value of the air conditioner is less than or equal to a first preset current value.

[0175] The second angle opening subunit is configured to open the fresh air outlet damper to a second angle if the current value of the air conditioner is less than or equal to the first preset current value.

[0176] A second current judgment subunit is configured to judge whether the current value of the air conditioner is less than or equal to a second preset current value if the current value of the air conditioner is greater than a first preset current value, wherein the second preset current value is greater than the first preset current value.

[0177] A third angle opening subunit is configured to open the fresh air outlet damper to a third angle if the current value of the air conditioner is less than or equal to the second preset current value.

[0178] A fourth angle opening subunit is configured to open the fresh air outlet damper to a fourth angle if the current value of the air conditioner is greater than the second preset current value.

[0179] Further, 0° < the first angle < the second angle < the third angle < the fourth angle < 90°.

[0180] Further, the angle adjustment subunit comprises:

[0181] A third environment temperature judgment subunit is configured to judge whether the outdoor environment temperature is less than or equal to a third preset environment temperature.

[0182] A high-speed adjustment subunit is configured to adjust the fresh air device to a high-speed mode if the outdoor environment temperature is less than or equal to the third preset environment temperature.

[0183] A fourth environment temperature judgment subunit is configured to judge whether the outdoor environment temperature is less than or equal to a fourth preset environment temperature if the outdoor environment temperature is greater than the third preset environment temperature, wherein the fourth preset environment temperature is greater than the third preset environment temperature.

[0184] A medium-speed adjustment subunit is configured to adjust the fresh air device to a medium-speed mode if the outdoor environment temperature is less than or equal to the fourth preset environment temperature.

[0185] A low-speed adjustment subunit is configured to adjust the fresh air device to a low-speed mode if the outdoor environment temperature is greater than the fourth preset environment temperature.

[0186] Further, the ion sterilization device comprises a positive ion sterilization component, a negative ion sterilization component and an equal ion sterilization component, and the closing unit 203 comprises:

[0187] A first adjustment subunit is configured to open the positive ion sterilization component to a low-concentration mode, open the negative ion sterilization component to a medium-concentration mode, and close the equal ion sterilization component.

[0188] Further, the ion sterilization device comprises a positive ion sterilization component, a negative ion sterilization component and an equal ion sterilization component, and the opening unit 204 comprises:

[0189] a temperature determining subunit configured to determine whether the inner tube temperature is less than or equal to a second preset inner tube temperature, wherein the second preset inner tube temperature is greater than the first preset inner tube temperature;

[0190] a concentration obtaining subunit configured to, if the inner tube temperature is less than or equal to the second preset inner tube temperature, obtain a bacteria concentration and a virus concentration on the evaporator, and adjust modes of the positive ion sterilization component, the negative ion sterilization component and the plasma sterilization component according to the bacteria concentration and the virus concentration;

[0191] a second adjusting subunit configured to, if the inner tube temperature is greater than the second preset inner tube temperature, turn on the positive ion sterilization component to a low concentration mode, turn off the negative ion sterilization component, and turn on the plasma sterilization component to a low concentration mode.

[0192] Further, the concentration obtaining subunit comprises:

[0193] a bacteria concentration obtaining subunit configured to obtain a bacteria concentration and a virus concentration on the evaporator;

[0194] a concentration determining subunit configured to determine whether the bacteria concentration is greater than a predetermined bacteria concentration, and determine whether the virus concentration is greater than a predetermined virus concentration;

[0195] a third adjusting subunit configured to, if the bacteria concentration is greater than the predetermined bacteria concentration and the virus concentration is less than or equal to the predetermined virus concentration, turn on the positive ion sterilization component to a high concentration mode, turn off the negative ion sterilization component, and turn on the plasma sterilization component to a medium concentration mode;

[0196] a fourth adjusting subunit configured to, if the bacteria concentration is less than or equal to the predetermined bacteria concentration and the virus concentration is greater than the predetermined virus concentration, turn off the positive ion sterilization component, turn on the negative ion sterilization component to a medium concentration mode, and turn on the plasma sterilization component to a high concentration mode;

[0197] a fifth adjusting subunit configured to, if the bacteria concentration is greater than the predetermined bacteria concentration and the virus concentration is greater than the predetermined virus concentration, turn on the positive ion sterilization component to a high concentration mode, turn off the negative ion sterilization component, and turn on the plasma sterilization component to a high concentration mode;

[0198] a sixth adjusting subunit configured to, if the bacteria concentration is less than or equal to the predetermined bacteria concentration and the virus concentration is less than or equal to the predetermined virus concentration, turn off the positive ion sterilization component, turn on the negative ion sterilization component to a high concentration mode, and turn off the plasma sterilization component.

[0199] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0200] It should also be noted that, in this specification, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprising" or any other variations thereof are intended to cover non-exclusive.

[0201] Inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a..." does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

Claims

1. A method for controlling an air conditioner, wherein the air conditioner comprises a housing, an evaporator disposed in the housing, a fresh air device, and an ion sterilization device, wherein: Methods include: Acquiring the temperature of the inner tube of the evaporator to obtain the inner tube temperature; determining whether the inner tube temperature is less than or equal to a first preset inner tube temperature; If the inner tube temperature is less than or equal to the first preset inner tube temperature, the ion sterilization device is adjusted to the normal sterilization mode and the fresh air device is turned off; If the inner tube temperature is greater than the first preset inner tube temperature, the ion sterilization device is adjusted to the strong sterilization mode and the fresh air device is turned on; the ion concentration output by the strong sterilization mode is higher than the ion concentration output by the ordinary sterilization mode.

2. The control method of the air conditioner according to claim 1, wherein the fresh air device is provided with a fresh air outlet and a fresh air outlet baffle for adjusting the opening of the fresh air outlet, characterized in that: The method of adjusting the ion sterilization device to a strong sterilization mode and turning on the fresh air device includes: Determining whether the inner tube temperature is less than or equal to a second preset inner tube temperature; wherein the second preset inner tube temperature is greater than the first preset inner tube temperature; If the inner tube temperature is less than or equal to a second preset inner tube temperature, opening the fresh air outlet damper to a first angle; If the inner tube temperature is greater than the second preset inner tube temperature, the current value and outdoor ambient temperature of the air conditioner are obtained, and the angle of the fresh air outlet baffle is adjusted according to the current value and the mode of the fresh air device is adjusted according to the outdoor ambient temperature.

3. The air conditioner control method according to claim 2, characterized in that: The step of opening the fresh air outlet baffle to the first angle includes: Get the outdoor ambient temperature; Determining whether the outdoor ambient temperature is less than or equal to a first preset ambient temperature; If the outdoor ambient temperature is less than or equal to a first preset ambient temperature, adjusting the fresh air device to a low speed mode; If the outdoor ambient temperature is greater than the first preset ambient temperature, determining whether the outdoor ambient temperature is less than or equal to a second preset ambient temperature; wherein the second preset ambient temperature is greater than the first preset ambient temperature; If the outdoor ambient temperature is less than or equal to the second preset ambient temperature, adjusting the fresh air device to a medium speed mode; If the outdoor ambient temperature is greater than a second preset ambient temperature, the fresh air device is adjusted to a high-speed mode.

4. The air conditioner control method according to claim 2, characterized in that: The adjusting the angle of the fresh air outlet baffle according to the current value includes: Determining whether the current value of the air conditioner is less than or equal to a first preset current value; If the current value of the air conditioner is less than or equal to the first preset current value, opening the fresh air outlet damper to a second angle; If the current value of the air conditioner is greater than the first preset current value, determining whether the current value of the air conditioner is less than or equal to a second preset current value; wherein the second preset current value is greater than the first preset current value; If the current value of the air conditioner is less than or equal to the second preset current value, opening the fresh air outlet damper to a third angle; If the current value of the air conditioner is greater than the second preset current value, the fresh air outlet baffle is opened to a fourth angle.

5. The air conditioner control method according to claim 4, characterized in that: 0°<first angle<second angle<third angle<fourth angle<90°.

6. The air conditioner control method according to claim 2, characterized in that: The mode of adjusting the fresh air device according to the outdoor ambient temperature includes: Determining whether the outdoor ambient temperature is less than or equal to a third preset ambient temperature; If the outdoor ambient temperature is less than or equal to a third preset ambient temperature, adjusting the fresh air device to a high speed mode; If the outdoor ambient temperature is greater than the third preset ambient temperature, determining whether the outdoor ambient temperature is less than or equal to a fourth preset ambient temperature; wherein the fourth preset ambient temperature is greater than the third preset ambient temperature; If the outdoor ambient temperature is less than or equal to a fourth preset ambient temperature, adjusting the fresh air device to a medium speed mode; If the outdoor ambient temperature is greater than a fourth preset ambient temperature, the fresh air device is adjusted to a low-speed mode.

7. The air conditioner control method according to claim 1, wherein the ion sterilization device comprises: The positive ion sterilization component, the negative ion sterilization component and the plasma sterilization component are characterized in that the step of adjusting the ion sterilization device to the normal sterilization mode includes: The positive ion sterilization component is turned on to a low concentration mode, the negative ion sterilization component is turned on to a medium concentration mode, and the plasma sterilization component is turned off.

8. The air conditioner control method according to claim 1, wherein the ion sterilization device comprises: The positive ion sterilization component, the negative ion sterilization component and the plasma sterilization component are characterized in that adjusting the ion sterilization device to a strong sterilization mode includes: Determining whether the inner tube temperature is less than or equal to a second preset inner tube temperature; wherein the second preset inner tube temperature is greater than the first preset inner tube temperature; If the inner tube temperature is less than or equal to a second preset inner tube temperature, obtaining the bacterial concentration and the virus concentration on the evaporator, and adjusting the modes of the positive ion sterilization component, the negative ion sterilization component, and the plasma sterilization component according to the bacterial concentration and the virus concentration; If the inner tube temperature is greater than a second preset inner tube temperature, the positive ion sterilization component is turned on to a low concentration mode, the negative ion sterilization component is turned off, and the plasma sterilization component is turned on to a low concentration mode.

9. The air conditioner control method according to claim 8, characterized in that: The mode of obtaining the bacterial concentration and the virus concentration on the evaporator and adjusting the positive ion sterilization component, the negative ion sterilization component and the plasma sterilization component according to the bacterial concentration and the virus concentration includes: Obtain bacterial and viral concentrations on the evaporator; determining whether the bacterial concentration is greater than a predetermined bacterial concentration, and determining whether the virus concentration is greater than a predetermined virus concentration; If the bacterial concentration is greater than a predetermined bacterial concentration and the virus concentration is less than or equal to a predetermined virus concentration, the positive ion sterilization component is turned on to a high concentration mode, the negative ion sterilization component is turned off, and the plasma sterilization component is turned on to a medium concentration mode; If the bacterial concentration is less than or equal to the predetermined bacterial concentration, and the virus concentration is greater than the predetermined virus concentration, the positive ion sterilization component is turned off, the negative ion sterilization component is turned on to the medium concentration mode, and the plasma sterilization component is turned on to the high concentration mode; If the bacterial concentration is greater than a predetermined bacterial concentration and the virus concentration is greater than a predetermined virus concentration, the positive ion sterilization component is turned on to a high concentration mode, the negative ion sterilization component is turned off, and the plasma sterilization component is turned on to a high concentration mode; If the bacterial concentration is less than or equal to the predetermined bacterial concentration, and the virus concentration is less than or equal to the predetermined virus concentration, the positive ion sterilization component is turned off, the negative ion sterilization component is turned on to a high concentration mode, and the plasma sterilization component is turned off.

10. A control system for an air conditioner, comprising a housing, an evaporator disposed in the housing, a fresh air device, and an ion sterilization device, wherein: The control system includes: a temperature acquisition unit, configured to acquire the temperature of the inner tube of the evaporator to obtain the inner tube temperature; a judging unit, configured to judge whether the inner tube temperature is less than or equal to a first preset inner tube temperature; a closing unit, configured to adjust the ion sterilization device to a normal sterilization mode and close the fresh air device if the inner tube temperature is less than or equal to a first preset inner tube temperature; The opening unit is used to adjust the ion sterilization device to a strong sterilization mode and turn on the fresh air device if the inner tube temperature is greater than a first preset inner tube temperature; the ion concentration output by the strong sterilization mode is higher than the ion concentration output by the ordinary sterilization mode.

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