Air conditioning unit and self-cleaning control method, module and computer readable medium thereof

Abstract

The application relates to an air conditioning unit and a self-cleaning control method, module and computer readable medium thereof. The method comprises the following steps: detecting the air quality level of the outdoor space of the air conditioning unit, the air conditioning unit comprising a fresh air unit and an indoor unit; in the case that the air quality level reaches the starting condition of the fresh air self-cleaning mode, introducing outdoor fresh air through the fresh air unit; introducing the outdoor fresh air into the indoor unit and a pre-established fresh air flow field in the indoor space, and running the fresh air self-cleaning mode, so as to clean the indoor unit by using the outdoor fresh air in the fresh air self-cleaning mode, and simultaneously exchange the indoor air in the fresh air flow field by using the outdoor fresh air. The application links the air conditioner self-cleaning stage with the fresh air characteristics, so that when the air conditioning unit runs in the fresh air self-cleaning mode, the introduction of the outdoor fresh air is enhanced, and the discharge of the indoor air is enhanced, thereby solving the technical problem that the effect of improving the indoor air quality is reduced when the indoor unit is self-cleaned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fresh air air conditioning, and in particular to an air conditioning unit, a self-cleaning control method, a module and a computer readable medium thereof. BACKGROUND

[0002] With the development of air conditioning technology and fresh air systems, fresh air air conditioning has entered the lives of more and more users. The fresh air system is to send fresh air to the indoor side by a dedicated device, and then exhaust it to the outdoor side by a dedicated device, so as to form a "fresh air flow field" in the room and meet the needs of indoor fresh air exchange. The emergence of the fresh air system makes it possible to use outdoor fresh air to replace indoor polluted air without opening the window, which is one of the characteristics of the fresh air system. However, research has found that the existing self-cleaning control mode of the air conditioner with a fresh air system still follows the traditional air conditioner indoor unit self-cleaning technology. Although this technology consumes a large amount of time and electric energy for self-cleaning, the purification effect of indoor air is significantly reduced when the indoor unit is self-cleaning. Therefore, continuing to use the traditional air conditioner indoor unit self-cleaning technology has deviated from the times and cannot meet the current needs of users for air conditioner indoor unit self-cleaning and improving indoor air.

[0003] At present, there is no effective solution to the problem of the decline in the effect of improving indoor air quality when the indoor unit is self-cleaning. SUMMARY

[0004] The present application provides an air conditioning unit and a self-cleaning control method, a module and a computer readable medium thereof to solve the technical problem of the decline in the effect of improving indoor air quality when the indoor unit is self-cleaning.

[0005] According to one aspect of the embodiments of the present application, the present application provides a self-cleaning control method of an air conditioning unit, comprising: detecting the air quality level of an outdoor space of the air conditioning unit, wherein the air conditioning unit comprises a fresh air unit and an indoor unit; in the case that the air quality level reaches the starting condition of a fresh air self-cleaning mode, introducing outdoor fresh air through the fresh air unit; introducing the outdoor fresh air into the indoor unit and a pre-established fresh air flow field in the indoor space, and running the fresh air self-cleaning mode to clean the indoor unit by using the outdoor fresh air in the fresh air self-cleaning mode, and simultaneously exchanging indoor air in the fresh air flow field by using the outdoor fresh air.

[0006] Optionally, the whole process of running the fresh air self-cleaning mode comprises: obtaining fresh air inlet humidity and exhaust air inlet humidity of the fresh air unit; determining a self-cleaning optimization strategy according to the fresh air inlet humidity and the exhaust air inlet humidity; executing the self-cleaning optimization strategy according to maximum air volume, so that the air conditioning unit enters a condensation stage and a frosting stage in sequence; in the case of completing the frosting stage, obtaining fresh air inlet temperature and exhaust air inlet temperature of the fresh air unit; adjusting the self-cleaning optimization strategy according to the fresh air inlet temperature and the exhaust air inlet temperature; executing the adjusted self-cleaning optimization strategy according to maximum air volume, so that the air conditioning unit enters a cleaning stage and a sterilization stage in sequence; in the case of completing the sterilization stage, resetting the air conditioning unit to exit the fresh air self-cleaning mode.

[0007] Optionally, the determining of the self-cleaning optimization strategy according to the fresh air inlet humidity and the exhaust air inlet humidity comprises: comparing the fresh air inlet humidity and the exhaust air inlet humidity; in the case of the fresh air inlet humidity being greater than the exhaust air inlet humidity, determining the self-cleaning optimization strategy as a humidity preservation strategy; in the case of the fresh air inlet humidity being less than the exhaust air inlet humidity, determining the self-cleaning optimization strategy as a humidity increasing strategy.

[0008] Optionally, the executing of the self-cleaning optimization strategy according to maximum air volume comprises: in the case of the self-cleaning optimization strategy being the humidity preservation strategy, controlling the indoor unit to enter a bypass mode and run according to maximum air volume, wherein the bypass mode is used to make exhaust air not pass through a heat exchange core to exchange heat with the outdoor fresh air directly and be discharged, so as to maintain humidity of the outdoor fresh air; in the case of the self-cleaning optimization strategy being the humidity increasing strategy, controlling the indoor unit to enter a full heat exchange mode and run according to maximum air volume, wherein the full heat exchange mode is used to make exhaust air pass through the heat exchange core to exchange heat with the outdoor fresh air, so as to increase humidity of the outdoor fresh air.

[0009] Optionally, the adjusting of the self-cleaning optimization strategy according to the fresh air inlet temperature and the exhaust air inlet temperature comprises: comparing the fresh air inlet temperature and the exhaust air inlet temperature; in the case of the fresh air inlet temperature being greater than the exhaust air inlet temperature, adjusting the self-cleaning optimization strategy as a temperature preservation strategy; in the case of the fresh air inlet temperature being less than the exhaust air inlet temperature, adjusting the self-cleaning optimization strategy as a temperature increasing strategy.

[0010] Optionally, the adjusting the self-cleaning optimization strategy according to the maximum air volume comprises: in a case where the adjusted self-cleaning optimization strategy is the temperature maintaining strategy, controlling the indoor unit to enter a bypass mode and run according to the maximum air volume, wherein the bypass mode is used to make exhaust air not pass through a heat exchange core to exchange heat with the outdoor fresh air directly and be discharged to maintain the temperature of the outdoor fresh air; and in a case where the adjusted self-cleaning optimization strategy is the temperature raising strategy, controlling the indoor unit to enter a full heat exchange mode and run according to the maximum air volume, wherein the full heat exchange mode is used to make exhaust air pass through the heat exchange core to exchange heat with the outdoor fresh air to raise the temperature of the outdoor fresh air.

[0011] Optionally, the detecting the air quality level of the outdoor space of the air conditioning unit comprises: obtaining independent measurement values of multiple air indexes, and determining independent air quality levels of the corresponding air indexes according to each independent measurement value; or multiplying the independent measurement values of the multiple air indexes by the corresponding weights, adding the products, and finally dividing the sum by the number of the air indexes to obtain a weighted average value of all the air indexes, and determining a comprehensive air quality level according to the weighted average value.

[0012] Optionally, after detecting the air quality level of the outdoor space, the method further comprises determining whether the air quality level meets the starting condition of the fresh air self-cleaning mode in the following manner: in a case where each independent air quality level meets a first target level, determining that the air quality level meets the starting condition of the fresh air self-cleaning mode; or in a case where the comprehensive air quality level meets a second target level, determining that the air quality level meets the starting condition of the fresh air self-cleaning mode.

[0013] According to another aspect of the embodiments of the present application, the present application provides a self-cleaning control module of an air conditioning unit, comprising: a detection module configured to detect an air quality level of an outdoor space of an air conditioning unit, wherein the air conditioning unit comprises a fresh air unit and an indoor unit; a fresh air module configured to introduce outdoor fresh air through the fresh air unit in a case where the air quality level meets a starting condition of a fresh air self-cleaning mode; and a fresh air self-cleaning module configured to introduce the outdoor fresh air into the indoor unit and a pre-established fresh air flow field in an indoor space, and run the fresh air self-cleaning mode to clean the indoor unit by using the outdoor fresh air in the fresh air self-cleaning mode, and exchange indoor air in the fresh air flow field by using the outdoor fresh air.

[0014] According to another aspect of the embodiments of this application, this application provides an air conditioning unit, including a memory, a processor, a communication interface and a communication bus. The memory stores a computer program that can run on the processor. The memory and the processor communicate with each other through the communication bus and the communication interface. When the processor executes the computer program, it implements the steps of the above method.

[0015] According to another aspect of the embodiments of this application, this application also provides a computer-readable medium having processor-executable non-volatile program code that causes the processor to perform the above-described method.

[0016] Compared with related technologies, the technical solutions provided in this application have the following advantages:

[0017] This application provides a self-cleaning control method for an air conditioning unit, comprising: detecting the air quality level of the outdoor space of the air conditioning unit, wherein the air conditioning unit includes a fresh air unit and an indoor unit; when the air quality level reaches the activation conditions for the fresh air self-cleaning mode, introducing outdoor fresh air through the fresh air unit; introducing the outdoor fresh air into the indoor unit and a pre-established fresh air flow field in the indoor space, and running the fresh air self-cleaning mode to clean the indoor unit using the outdoor fresh air, and simultaneously exchanging the indoor air in the fresh air flow field with the outdoor fresh air. This application links the air conditioning self-cleaning stage with fresh air characteristics, so that when the air conditioning unit operates in the fresh air self-cleaning mode, it enhances the introduction of outdoor fresh air and enhances the exhaust of indoor air, thereby improving the overall indoor air quality while satisfying the self-cleaning mode operation of the air conditioning unit, and solving the technical problem of reduced indoor air quality improvement effect when the indoor unit performs self-cleaning. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0020] Figure 1 This is a flowchart of an optional self-cleaning control method for an air conditioning unit according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of an optional fresh air self-cleaning mode provided according to an embodiment of this application;

[0022] Figure 3 An optional self-cleaning control module block diagram of an air conditioning unit according to an embodiment of the present application is provided.

[0023] Figure 4 An optional air conditioning unit structure schematic diagram according to an embodiment of the present application is provided. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in detail with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0025] In the following description, the suffixes such as "module", "part", or "unit" used for an element are merely intended for facilitating the description of the present application, and are not intended to have a specific meaning or function. Thus, "module" and "part" can be used interchangeably.

[0026] To solve the problems mentioned in the background art, according to an aspect of an embodiment of the present application, an embodiment of a self-cleaning control method of an air conditioning unit is provided. The method can be run by an air conditioning unit, as shown in Figure 1 The method can include the following steps:

[0027] Step S102, detecting an air quality level of an outdoor space of an air conditioning unit, the air conditioning unit comprising a fresh air unit and an indoor unit;

[0028] Step S104, introducing outdoor fresh air through the fresh air unit in a case where the air quality level reaches a starting condition of a fresh air self-cleaning mode;

[0029] Step S106, introducing the outdoor fresh air into the indoor unit and a pre-established fresh air flow field in an indoor space, and running the fresh air self-cleaning mode to clean the indoor unit by using the outdoor fresh air in the fresh air self-cleaning mode, and simultaneously exchange indoor air in the fresh air flow field by using the outdoor fresh air.

[0030] Through the steps S102-S106, the air conditioner self-cleaning phase is linked with the fresh air characteristics, so that when the air conditioning unit runs in the fresh air self-cleaning mode, the introduction of outdoor fresh air is enhanced and the discharge of indoor air is enhanced, the indoor air quality is improved as a whole while meeting the air conditioning unit self-cleaning mode, and the technical problem of the decline of the effect of improving indoor air quality when the indoor unit is self-cleaning is solved.

[0031] In step S102, the air conditioning unit can determine whether to enter the fresh air self-cleaning mode or the ordinary self-cleaning mode according to the real-time air quality of outdoor air. Specifically, the detection of the air quality level of the outdoor space of the air conditioning unit includes: obtaining independent measurement values of multiple air indicators, and determining independent air quality levels for the corresponding air indicators according to each independent measurement value; or multiplying the independent measurement values of each air indicator by the corresponding weight, then adding each product, and finally dividing the sum by the number of items of the air indicators to obtain a weighted average value of all air indicators, and determining a comprehensive air quality level according to the weighted average value.

[0032] In the embodiment of the application, before deciding to run the self-cleaning mode, the local climate environment needs to be judged. For example, if the local weather is a sandstorm or other severe weather, the ordinary self-cleaning mode is selected instead of the "fresh air self-cleaning" mode; if the local climate is normal and the air quality is good, the "fresh air self-cleaning" mode can be entered. Because the fresh air system is based on a dedicated device to send fresh air to the indoor side in a closed room, and then a dedicated device is used to discharge outdoor air from the other side, a "fresh air flow field" is formed in the room to meet the needs of indoor fresh air exchange, that is, outdoor fresh air is introduced. Therefore, if the outdoor air quality is poor, outdoor fresh air cannot be introduced, otherwise the indoor air quality will become worse. Only when the outdoor air quality is good can the air conditioner self-cleaning and fresh air characteristics be linked to further improve the indoor air quality.

[0033] In an optional embodiment, after detecting the air quality level of the outdoor space, the method further includes determining whether the air quality level meets the starting condition of the fresh air self-cleaning mode in the following manner: in the case that each independent air quality level reaches a first target level, it is determined that the air quality level meets the starting condition of the fresh air self-cleaning mode; or in the case that the comprehensive air quality level reaches a second target level, it is determined that the air quality level meets the starting condition of the fresh air self-cleaning mode.

[0034] In the embodiments of the present application, the integrated detection module (such as PM2.5, formaldehyde, TVOC, etc.) can be used to output the evaluation level of air quality. A reasonable level can be set as the threshold for evaluating whether to enter the fresh air self-cleaning mode according to actual needs. When the air quality evaluation reaches the level that can enter the fresh air self-cleaning mode, the fresh air self-cleaning mode is entered, otherwise the ordinary self-cleaning mode is entered.

[0035] In the embodiments of the present application, the integrated detection module can output independent values of each air index or a comprehensive evaluation value. For example, when independent values are output and judged, for example, the PM2.5 air quality is good, the formaldehyde air quality is poor, and the TVOC quality is good, since the feedback of the high content of formaldehyde in the air, the ordinary self-cleaning is selected to enter. For another example, the integrated detection module outputs a comprehensive evaluation score according to the measured values of each air index, and whether the comprehensive evaluation score reaches the threshold is judged to determine the self-cleaning mode. The total evaluation score can be obtained by the weighted average of each air index, and the weight of each air index can be set according to actual needs or determined according to the proportion of each gas under normal air quality.

[0036] In the above manner, the present application can evaluate the air quality for each gas or comprehensively evaluate the air quality, meeting the needs of users in various environments.

[0037] In steps S104 and S106, if the air conditioning unit determines that the air quality level reaches the starting condition of the fresh air self-cleaning mode, the fresh air self-cleaning mode is entered to run, the air conditioning self-cleaning is linked with the fresh air characteristics, the indoor air is purified while the air conditioning unit is cleaned using fresh air, and the air quality of the indoor environment is further improved.

[0038] If the ordinary self-cleaning mode is entered, the outdoor fresh air is not introduced, but the indoor air is circulated in the fresh air unit to run, so that the air conditioning unit is self-cleaned while the indoor air is purified. If the fresh air self-cleaning mode is entered, the outdoor fresh air needs to be introduced, and the whole process of running the fresh air self-cleaning mode is described below.

[0039] In an optional embodiment, the whole process of running the fresh air self-cleaning mode includes:

[0040] In step S202, the fresh air inlet humidity and the exhaust air inlet humidity of the fresh air unit are obtained.

[0041] In the embodiments of the present application, the fresh air inlet humidity is the humidity of the air at the fresh air unit outdoor unit inlet, that is, the humidity of the air about to enter the indoor, which represents the outdoor air humidity. The exhaust air inlet humidity is the humidity of the air at the fresh air unit indoor unit inlet, that is, the humidity of the air about to be discharged to the outdoor, which represents the indoor air humidity.

[0042] Step S204, determining a self-cleaning optimization strategy according to the fresh air inlet humidity and the exhaust air inlet humidity.

[0043] In the embodiments of the present application, it is found through research that the first two stages (condensation stage and frosting stage) of self-cleaning of the air conditioner indoor unit depend on the indoor air humidity to a certain extent, and the self-cleaning effect of the air conditioner indoor unit is affected when the indoor air humidity is too low. When the indoor air humidity is high, it can promote the self-cleaning of the air conditioner indoor unit. Therefore, the present application introduces humidity judgment, and different self-cleaning optimization strategies are executed according to different humidity conditions, so as to further improve the efficiency of self-cleaning and enhance the self-cleaning effect.

[0044] Specifically, the determination of the self-cleaning optimization strategy according to the fresh air inlet humidity and the exhaust air inlet humidity comprises: comparing the fresh air inlet humidity with the exhaust air inlet humidity; in the case that the fresh air inlet humidity is greater than the exhaust air inlet humidity, determining that the self-cleaning optimization strategy is a humidity preservation strategy; and in the case that the fresh air inlet humidity is less than the exhaust air inlet humidity, determining that the self-cleaning optimization strategy is a humidification strategy.

[0045] In the embodiments of the present application, in the case that the air humidity of the outdoor fresh air is sufficient, the humidity preservation strategy can be used, that is, the air humidity of the outdoor fresh air is not changed. In this way, the humidity of the air entering the indoor is large enough, so that the copper pipe of the air conditioner indoor unit can more easily condense water, which promotes the self-cleaning of the air conditioner indoor unit. When the air humidity of the outdoor fresh air is less than the air humidity of the indoor air, the humidification strategy is used to make the indoor air and the outdoor fresh air exchange heat, so that the outdoor fresh air enters the indoor after heat exchange, which can increase the humidity of the outdoor fresh air and further improve the self-cleaning effect.

[0046] Step S206, executing the self-cleaning optimization strategy according to the maximum air volume, so that the air conditioner unit enters the condensation stage and the frosting stage in sequence.

[0047] In the embodiments of the present application, this step specifically comprises: in the case that the self-cleaning optimization strategy is the humidity preservation strategy, controlling the indoor unit to enter a bypass mode and run according to the maximum air volume, wherein the bypass mode is used to make the exhaust air not exchange heat with the outdoor fresh air through the heat exchange core and directly exhaust, so as to maintain the humidity of the outdoor fresh air; and in the case that the self-cleaning optimization strategy is the humidification strategy, controlling the indoor unit to enter a full heat exchange mode and run according to the maximum air volume, wherein the full heat exchange mode is used to make the exhaust air exchange heat with the outdoor fresh air through the heat exchange core, so as to increase the humidity of the outdoor fresh air.

[0048] In the embodiments of the present application, the bypass mode refers to that the exhaust air and the fresh air do not pass through the heat exchange core, the exhaust air is directly discharged without heat exchange, and the fresh air is directly introduced into the indoor without heat exchange. The full heat exchange mode refers to that the exhaust air and the fresh air need to pass through the heat exchange core, the exhaust air needs to be heat exchanged with the fresh air before being discharged, and the fresh air needs to be heat exchanged with the exhaust air before being introduced into the indoor.

[0049] In the embodiments of the present application, in the case that the fresh air inlet humidity is greater than the exhaust air inlet humidity, it indicates that the humidity of the outdoor fresh air is already large enough. At this time, if the exhaust air is heat exchanged with the fresh air, the humidity of the outdoor fresh air will be reduced, which will increase the difficulty of condensation of water on the copper pipe of the indoor unit, and affect the self-cleaning effect. Therefore, in the case that the fresh air inlet humidity is greater than the exhaust air inlet humidity, the bypass mode is entered and the maximum air volume is run, so as to keep the fresh air introduced into the indoor having sufficient humidity. In the case that the fresh air inlet humidity is less than the exhaust air inlet humidity, it indicates that the humidity of the outdoor fresh air is not enough. At this time, the exhaust air needs to be heat exchanged with the fresh air, so as to increase the humidity of the fresh air introduced into the indoor, and make it easier for water to condense on the copper pipe of the indoor unit, so as to improve the self-cleaning effect. Therefore, in the case that the fresh air inlet humidity is less than the exhaust air inlet humidity, the full heat exchange mode is entered and the maximum air volume is run, so as to increase the humidity of the fresh air introduced into the indoor.

[0050] In the embodiments of the present application, the maximum air volume needs to exit the air volume balancing mode. Whether the maximum air volume can be judged by judging whether the motor PWM parameter reaches 100%. The parameter can feedback the real-time load degree of the motor. When the PWM parameter reaches 100%, it represents that the air volume has reached the maximum value under the current static pressure, and the motor speed cannot be improved any more. The air volume balancing mode is a way to control the air volume of the fresh air conditioner at present. The fresh air conditioner has a nominal air volume, for example, 150 air volume. In the actual building, due to the limitation of air duct, air pipe and the like, the outdoor static pressure of the fresh air machine is different. Through the judgment of the motor PWM parameter, the air volume can be maintained at 150 stable output under different outdoor static pressure.

[0051] In the embodiments of the present application, the above self-cleaning optimization strategies are all for improving the air humidity in the indoor, so that it is easier for water to condense on the copper pipe of the indoor unit, so as to enter the condensation stage and the frosting stage faster.

[0052] In step S208, the fresh air inlet temperature and the exhaust air inlet temperature of the fresh air unit are acquired when the frosting stage is completed.

[0053] In this embodiment, the fresh air intake temperature is the temperature of the air at the air inlet of the outdoor unit of the fresh air handling unit, that is, the temperature of the air about to enter the room, representing the outdoor air temperature. The exhaust air intake temperature is the temperature of the air at the air inlet of the indoor unit of the fresh air handling unit, that is, the temperature of the air about to be exhausted outdoors, representing the indoor air temperature.

[0054] Step S210: Adjust the self-cleaning optimization strategy according to the fresh air intake temperature and the exhaust air intake temperature.

[0055] In this embodiment, after the frosting stage is completed, the self-cleaning optimization strategy can be adjusted according to the fresh air intake temperature and the exhaust air intake temperature. The purpose is to increase the indoor air temperature so that the copper pipes of the indoor unit can heat up faster and the frost layer can melt faster, thereby further improving the efficiency of self-cleaning and enhancing the self-cleaning effect.

[0056] Specifically, adjusting the self-cleaning optimization strategy based on the fresh air intake temperature and the exhaust air intake temperature includes: comparing the fresh air intake temperature and the exhaust air intake temperature; adjusting the self-cleaning optimization strategy to a heat preservation strategy when the fresh air intake temperature is greater than the exhaust air intake temperature; and adjusting the self-cleaning optimization strategy to a heating strategy when the fresh air intake temperature is less than the exhaust air intake temperature.

[0057] In this embodiment, when the outdoor fresh air temperature is already sufficiently high, a heat preservation strategy can be adopted, meaning the outdoor fresh air temperature remains unchanged. This ensures the incoming indoor air is sufficiently warm, allowing the copper pipes of the indoor air conditioning unit to heat up faster, melting the frost layer more quickly and effectively promoting the self-cleaning of the indoor air conditioning unit. Conversely, when the outdoor fresh air temperature is lower than the indoor air temperature, a heating strategy is required. This involves heat exchange between the indoor and outdoor fresh air, increasing the outdoor fresh air temperature before it enters the room. This ensures the fresh air enters the room at a sufficiently high temperature, allowing the copper pipes of the indoor air conditioning unit to heat up faster and melting the frost layer more quickly.

[0058] Step S212: The adjusted self-cleaning optimization strategy is executed according to the maximum air volume, so that the air conditioning unit enters the cleaning stage and the sterilization stage in sequence.

[0059] In the embodiment of the present application, the step specifically comprises: in the case that the adjusted self-cleaning optimization strategy is the heat preservation strategy, controlling the indoor unit to enter a bypass mode and run at the maximum air volume, wherein the bypass mode is used to make the exhaust air not pass through the heat exchange core to exchange heat with the outdoor fresh air and directly exhaust away, so as to maintain the temperature of the outdoor fresh air; in the case that the adjusted self-cleaning optimization strategy is the temperature raising strategy, controlling the indoor unit to enter a full heat exchange mode and run at the maximum air volume, wherein the full heat exchange mode is used to make the exhaust air pass through the heat exchange core to exchange heat with the outdoor fresh air, so as to raise the temperature of the outdoor fresh air.

[0060] In the embodiment of the present application, in the case that the fresh air inlet temperature is greater than the exhaust air inlet temperature, it indicates that the temperature of the outdoor fresh air is high enough, at this time, if the exhaust air exchanges heat with the fresh air, the temperature of the outdoor fresh air will be reduced, and then the outdoor fresh air with reduced temperature entering the indoor unit will slow down the temperature rising speed of the copper pipe of the indoor unit, thereby affecting the self-cleaning effect. Therefore, in the case that the fresh air inlet temperature is greater than the exhaust air inlet temperature, the bypass mode is entered and the maximum air volume is run, so as to maintain the high temperature of the fresh air entering the indoor unit. In the case that the fresh air inlet temperature is less than the exhaust air inlet temperature, it indicates that the temperature of the outdoor fresh air is not high enough, at this time, the exhaust air needs to exchange heat with the fresh air, so as to raise the temperature of the fresh air entering the indoor unit, and make the copper pipe of the indoor unit raise the temperature faster and the frost layer melt faster, thereby improving the self-cleaning effect. Therefore, in the case that the fresh air inlet temperature is less than the exhaust air inlet temperature, the full heat exchange mode is entered and the maximum air volume is run, so as to raise the temperature of the fresh air entering the indoor unit.

[0061] In the embodiment of the present application, the above adjusted self-cleaning optimization strategies are all used to raise the temperature of the indoor air, so as to make the copper pipe of the indoor unit raise the temperature faster and the frost layer melt faster, thereby making the air conditioner indoor unit enter the cleaning phase and the sterilization phase faster.

[0062] In step S214, in the case that the sterilization phase is completed, the air conditioner unit is reset to exit the fresh air self-cleaning mode.

[0063] In the embodiment of the present application, in order to ensure the stability and reliability of the unit during the period of switching back to normal control after self-cleaning, the air conditioner unit can be reset. After the air conditioner unit is reset, the automatic control state before entering the self-cleaning mode is restored.

[0064] In the related art, the fresh air conditioner uses the traditional air conditioner indoor unit self-cleaning technology, which wastes the function significance of the fresh air unit itself. At the same time, the human comfort is poor during the operation of the self-cleaning mode, so the air conditioner self-cleaning and the fresh air characteristics are linked in this application, and the indoor air is "blooded" once during the self-cleaning period, so that the air conditioner indoor unit can purify the indoor air quality while operating in the self-cleaning mode, and the self-cleaning mode is used to the extreme.

[0065] The air conditioner self-cleaning stage and the fresh air characteristics are linked in this application, so that when the air conditioner unit operates in the fresh air self-cleaning mode, the introduction of outdoor fresh air and the exhaust of indoor air are enhanced, the indoor air quality is improved as a whole while the air conditioner unit operates in the self-cleaning mode, and the technical problem of the decline of the effect of improving indoor air quality when the indoor unit is self-cleaning is solved.

[0066] According to another aspect of the embodiments of the application, as Figure 3 shown, a self-cleaning control module of an air conditioner unit is provided, comprising:

[0067] The detection module 301 is configured to detect the air quality level of the outdoor space of the air conditioner unit, wherein the air conditioner unit comprises a fresh air unit and an indoor unit;

[0068] The fresh air module 303 is configured to introduce outdoor fresh air through the fresh air unit when the air quality level meets the starting condition of the fresh air self-cleaning mode;

[0069] The fresh air self-cleaning module 305 is configured to introduce the outdoor fresh air into the indoor unit and a pre-established fresh air flow field in the indoor space, and operate the fresh air self-cleaning mode, so as to clean the indoor unit with the outdoor fresh air in the fresh air self-cleaning mode, and exchange the indoor air in the fresh air flow field with the outdoor fresh air at the same time.

[0070] It should be noted that the detection module 301 in this embodiment can be used to execute step S102 in the embodiments of the application, the fresh air module 303 in this embodiment can be used to execute step S104 in the embodiments of the application, and the fresh air self-cleaning module 305 in this embodiment can be used to execute step S106 in the embodiments of the application.

[0071] It should be noted that the above modules have the same examples and application scenarios as the corresponding steps, but are not limited to the above disclosed contents. It should be noted that the above modules can be realized by software as part of the module, or by hardware.

[0072] Optionally, the fresh air self-cleaning module is specifically configured to: acquire fresh air inlet humidity and exhaust air inlet humidity of the fresh air unit; determine a self-cleaning optimization strategy according to the fresh air inlet humidity and the exhaust air inlet humidity; execute the self-cleaning optimization strategy according to maximum air volume, so that the air conditioning unit enters a condensation stage and a frosting stage in sequence; acquire fresh air inlet temperature and exhaust air inlet temperature of the fresh air unit in the case of completing the frosting stage; adjust the self-cleaning optimization strategy according to the fresh air inlet temperature and the exhaust air inlet temperature; execute the adjusted self-cleaning optimization strategy according to maximum air volume, so that the air conditioning unit enters a cleaning stage and a sterilization stage in sequence; and reset the air conditioning unit to exit the fresh air self-cleaning mode in the case of completing the sterilization stage.

[0073] Optionally, the fresh air self-cleaning module is further configured to: compare the fresh air inlet humidity and the exhaust air inlet humidity; determine the self-cleaning optimization strategy as a humidity preservation strategy in the case of the fresh air inlet humidity being greater than the exhaust air inlet humidity; and determine the self-cleaning optimization strategy as a humidity increasing strategy in the case of the fresh air inlet humidity being less than the exhaust air inlet humidity.

[0074] Optionally, the fresh air self-cleaning module is further configured to: control the indoor unit to enter a bypass mode and run according to maximum air volume in the case of the self-cleaning optimization strategy being the humidity preservation strategy, wherein the bypass mode is used to make exhaust air not exchange heat with the outdoor fresh air through a heat exchange core and directly exhaust away, so as to maintain humidity of the outdoor fresh air; and control the indoor unit to enter a full heat exchange mode and run according to maximum air volume in the case of the self-cleaning optimization strategy being the humidity increasing strategy, wherein the full heat exchange mode is used to make exhaust air exchange heat with the outdoor fresh air through the heat exchange core, so as to increase humidity of the outdoor fresh air.

[0075] Optionally, the fresh air self-cleaning module is further configured to: compare the fresh air inlet temperature and the exhaust air inlet temperature; adjust the self-cleaning optimization strategy as a temperature preservation strategy in the case of the fresh air inlet temperature being greater than the exhaust air inlet temperature; and adjust the self-cleaning optimization strategy as a temperature increasing strategy in the case of the fresh air inlet temperature being less than the exhaust air inlet temperature.

[0076] Optionally, the fresh air self-cleaning module is further configured to: when the adjusted self-cleaning optimization strategy is the heat preservation strategy, control the indoor unit to enter bypass mode and operate at maximum airflow, wherein the bypass mode is used to allow exhaust air to bypass the heat exchange core and directly exhaust it without exchanging heat with the outdoor fresh air, so as to maintain the temperature of the outdoor fresh air; when the adjusted self-cleaning optimization strategy is the heating strategy, control the indoor unit to enter full heat exchange mode and operate at maximum airflow, wherein the full heat exchange mode is used to allow exhaust air to pass through the heat exchange core and exchange heat with the outdoor fresh air, so as to increase the temperature of the outdoor fresh air.

[0077] Optionally, the detection module is specifically used to: acquire independent measurement values ​​of multiple air quality indicators, and assign an independent air quality level to the corresponding air quality indicator based on each independent measurement value; or, multiply the independent measurement values ​​of each air quality indicator by their corresponding weights, add the products of each indicator together, and finally divide the sum by the number of air quality indicators to obtain a weighted average of all air quality indicators, and determine the comprehensive air quality level based on the weighted average.

[0078] Optionally, the detection module is further configured to: determine the activation conditions for the fresh air self-cleaning mode when each individual air quality level reaches the first target level; or, determine the activation conditions for the fresh air self-cleaning mode when the overall air quality level reaches the second target level.

[0079] According to another aspect of the embodiments of this application, this application provides an air conditioning unit, such as... Figure 4 As shown, the system includes a memory 401, a processor 403, a communication interface 405, and a communication bus 407. The memory 401 stores a computer program that can run on the processor 403. The memory 401 and the processor 403 communicate through the communication interface 405 and the communication bus 407. When the processor 403 executes the computer program, it implements the steps of the above method.

[0080] The memory and processor in the aforementioned electronic devices communicate with each other via a communication bus and a communication interface. The communication bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into an address bus, a data bus, a control bus, etc.

[0081] The memory can include a random access memory (RAM) and can also include a non-volatile memory, such as at least one disk memory. Optionally, the memory can also be at least one storage device located away from the aforementioned processor.

[0082] The aforementioned processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component.

[0083] According to another aspect of the embodiments of the present application, a computer program product or computer program is also provided, which includes computer instructions stored in a computer readable storage medium. A processor of a computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions, so that the computer device executes the steps of any of the above embodiments.

[0084] Optionally, in the embodiments of the present application, the computer readable medium is configured to store program codes for the processor to execute the following steps:

[0085] Detecting an air quality level of an outdoor space of an air conditioning unit, the air conditioning unit including a fresh air unit and an indoor unit;

[0086] In a case where the air quality level reaches a starting condition of a fresh air self-cleaning mode, introducing outdoor fresh air through the fresh air unit;

[0087] Introducing the outdoor fresh air into the indoor unit and a pre-established fresh air flow field in an indoor space, and running the fresh air self-cleaning mode to clean the indoor unit by using the outdoor fresh air in the fresh air self-cleaning mode, and simultaneously exchanging indoor air in the fresh air flow field by using the outdoor fresh air.

[0088] Optionally, specific examples in the embodiments of the present application can refer to the examples described in the above embodiments, and the embodiments of the present application will not be described here again.

[0089] The embodiments of the present application can refer to the above-mentioned embodiments for specific implementation, and have corresponding technical effects.

[0090] It can be understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing units can be implemented in one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described in the embodiments of the present application, or a combination thereof.

[0091] For software implementation, the technologies described herein can be implemented by units performing the functions described herein. The software code can be stored in a memory and executed by a processor. The memory can be implemented in the processor or outside the processor.

[0092] Those of ordinary skill in the art can be aware that, in combination with the embodiments disclosed in the specification, units and algorithm steps of the examples described in combination with the embodiments disclosed in the specification can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solutions. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present application.

[0093] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0094] In the embodiments provided by the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. For example, the above-described device embodiments are only schematic. The division of the modules is only a logical function division. There can be another division manner in actual implementation. For example, a plurality of modules or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between the modules can be indirect couplings or communication connections through some interfaces, devices or units, and can be electrical, mechanical or in other forms.

[0095] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, i.e. may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0096] In addition, the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit.

[0097] The functions, if realized in the form of software functional units and sold or used as independent products, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application essentially or the parts that contribute to the prior art or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk, and various program codes that can be stored in the medium. It should be noted that in this paper, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0098] The above is only a specific embodiment of the present application, so that those skilled in the art can understand or implement the present application. Various modifications of these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A self-cleaning control method for an air conditioning unit, characterized in that, Comprise: Detect the air quality level of the outdoor space of an air conditioning unit, the air conditioning unit comprising a fresh air unit and an indoor unit; In the case where the air quality level reaches the starting condition of a fresh air self-cleaning mode, introduce outdoor fresh air through the fresh air unit; Introduce the outdoor fresh air into the indoor unit and a pre-established fresh air flow field in the indoor space, and run the fresh air self-cleaning mode to clean the indoor unit with the outdoor fresh air and exchange indoor air in the fresh air flow field with the outdoor fresh air at the same time; The whole process of running the fresh air self-cleaning mode comprises: obtaining the fresh air inlet humidity and exhaust air inlet humidity of the fresh air unit; determining a self-cleaning optimization strategy according to the fresh air inlet humidity and the exhaust air inlet humidity; executing the self-cleaning optimization strategy according to the maximum air volume, so that the air conditioning unit enters a condensation stage and a frosting stage in turn; in the case where the frosting stage is completed, obtaining the fresh air inlet temperature and the exhaust air inlet temperature of the fresh air unit; adjusting the self-cleaning optimization strategy according to the fresh air inlet temperature and the exhaust air inlet temperature; executing the adjusted self-cleaning optimization strategy according to the maximum air volume, so that the air conditioning unit enters a cleaning stage and a sterilization stage in turn; in the case where the sterilization stage is completed, resetting the air conditioning unit to exit the fresh air self-cleaning mode.

2. The method of claim 1, wherein, The determination of the self-cleaning optimization strategy according to the fresh air inlet humidity and the exhaust air inlet humidity comprises: Comparing the fresh air inlet humidity and the exhaust air inlet humidity; In the case where the fresh air inlet humidity is greater than the exhaust air inlet humidity, determining the self-cleaning optimization strategy as a humidity preservation strategy; In the case where the fresh air inlet humidity is less than the exhaust air inlet humidity, determining the self-cleaning optimization strategy as a humidity increasing strategy.

3. The method of claim 2, wherein, The execution of the self-cleaning optimization strategy according to the maximum air volume comprises: In the case where the self-cleaning optimization strategy is the humidity preservation strategy, controlling the indoor unit to enter a bypass mode and run according to the maximum air volume, wherein the bypass mode is used to make exhaust air not pass through a heat exchange core to exchange heat with the outdoor fresh air directly and be discharged, so as to maintain the humidity of the outdoor fresh air; In the case where the self-cleaning optimization strategy is the humidity increasing strategy, controlling the indoor unit to enter a total heat exchange mode and run according to the maximum air volume, wherein the total heat exchange mode is used to make exhaust air pass through the heat exchange core to exchange heat with the outdoor fresh air, so as to increase the humidity of the outdoor fresh air.

4. The method of claim 1, wherein, The adjustment of the self-cleaning optimization strategy according to the fresh air inlet temperature and the exhaust air inlet temperature comprises: Comparing the fresh air inlet temperature and the exhaust air inlet temperature; In the case where the fresh air inlet temperature is greater than the exhaust air inlet temperature, adjusting the self-cleaning optimization strategy as a temperature preservation strategy; In the case where the fresh air inlet temperature is less than the exhaust air inlet temperature, adjusting the self-cleaning optimization strategy as a temperature increasing strategy.

5. The method of claim 4, wherein, The execution of the adjusted self-cleaning optimization strategy according to the maximum air volume comprises: In a case where the adjusted self-cleaning optimization strategy is the temperature maintaining strategy, the indoor unit is controlled to enter a bypass mode and run at a maximum air volume, where the bypass mode is used to make exhaust air not pass through a heat exchange core to exchange heat with the outdoor fresh air directly and be discharged to maintain the temperature of the outdoor fresh air; In a case where the adjusted self-cleaning optimization strategy is the temperature raising strategy, the indoor unit is controlled to enter a full heat exchange mode and run at a maximum air volume, where the full heat exchange mode is used to make exhaust air pass through the heat exchange core to exchange heat with the outdoor fresh air to raise the temperature of the outdoor fresh air.

6. The method according to any one of claims 1 to 5, characterized in that, The method further comprises determining the air quality level of the outdoor space of the air conditioning unit, including: obtaining independent measurement values of multiple air indicators, and determining independent air quality levels for the corresponding air indicators according to each independent measurement value; or, multiplying the independent measurement values of each air indicator by the corresponding weight, then adding each product, and finally dividing the sum by the number of air indicators to obtain a weighted average value of all air indicators, and determining a comprehensive air quality level according to the weighted average value.

7. The method of claim 6, wherein, After detecting the air quality level of the outdoor space of the air conditioning unit, the method further comprises determining whether the air quality level meets the starting condition of the fresh air self-cleaning mode in the following manner: In a case where each independent air quality level reaches a first target level, it is determined that the air quality level meets the starting condition of the fresh air self-cleaning mode; or, in a case where the comprehensive air quality level reaches a second target level, it is determined that the air quality level meets the starting condition of the fresh air self-cleaning mode.

8. A self-cleaning control module of an air conditioning unit for implementing the self-cleaning control method of the air conditioning unit according to any one of claims 1 to 7, characterized in that, The method further comprises: a detection module for detecting the air quality level of the outdoor space of the air conditioning unit, the air conditioning unit comprising a fresh air unit and an indoor unit; a fresh air module for introducing outdoor fresh air through the fresh air unit in a case where the air quality level meets the starting condition of the fresh air self-cleaning mode; a fresh air self-cleaning module for introducing the outdoor fresh air into the indoor unit and a pre-established fresh air flow field in an indoor space, and running the fresh air self-cleaning mode to clean the indoor unit with the outdoor fresh air and exchange indoor air in the fresh air flow field with the outdoor fresh air in the fresh air self-cleaning mode.

9. An air conditioning unit comprising a memory, a processor, a communication interface and a communication bus, the memory storing a computer program executable on the processor, the memory, the processor communicating via the communication bus and the communication interface, characterized in that, The processor executes the computer program to implement the steps of the method of any one of claims 1 to 7.

10. A computer readable medium having non-transitory program code executable by a processor, the program code comprising instructions for: The program code causes the processor to execute the method of any one of claims 1 to 7.

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