Multi-room zoned air purification control methods, control devices, and intelligent air conditioners

Abstract

This application relates to the field of air conditioning technology and discloses a control method for multi-room zoned air purification. The method includes: obtaining a first duration positively correlated with the pollution rate of a first room; determining a second duration based on the first duration and a expected pressure reduction rate; providing a preset cooling / heating load to the second room during the second duration; and at the end of the second duration, shortening the first duration to obtain a third duration based on the matching degree between the cooling / heating capacity of the second room and its temperature requirements, and providing fresh air to the first room during the third duration. This multi-room zoned air purification control method can reduce or even eliminate adverse effects on the temperature control effect and air quality of other rooms while purifying the air in some rooms of a multi-room system. This application also discloses a multi-room zoned air purification control method and an intelligent air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioning technology, for example to a control method, a control device and an intelligent air conditioner for purifying air in multiple rooms. BACKGROUND

[0002] At present, in North American countries such as the United States and Canada, a duct type split air conditioner is used to cool or heat the indoor. The duct type split air conditioner is composed of an outdoor unit, an indoor unit and a connecting pipe. Cold / heat air generated by the indoor unit in the cooling / heating mode first enters a main air supply pipe and then is distributed to each branch air supply pipe, and finally enters each room through the air inlet at the end of the branch air supply pipe. Meanwhile, each room is provided with an air return inlet, and the air return inlet is provided with a corresponding air return pipe branch. The air in the room is converged to the main air return pipe through the air return pipe branch and then enters the indoor unit.

[0003] In terms of indoor healthy air, the substances in the air that are harmful to human health include but are not limited to volatile organic compounds (VOC), combustion products such as fuel and tobacco, various organic compounds, etc. In the prior art, harmful pollutants in indoor air can be removed based on the adsorption principle, and indoor air can also be replaced by fresh air to reduce the concentration of pollutants harmful to human body in indoor air.

[0004] In the process of implementing the embodiments of the present application, it is found that at least the following problems exist in the related art:

[0005] The prior art is usually directed to a single room, and usually maintains a slight positive pressure in the room, which is beneficial to reducing the concentration of harmful pollutants in the indoor air. In the application scenario of the duct type split air conditioner, the number of rooms is multiple, and the concentrations of pollutants in each room can be different, that is, some rooms urgently need to reduce the concentration of indoor pollutants, while some rooms do not need to reduce the concentration of indoor pollutants. The most typical living scenario is that there is smoking in a single room. The duct type split air conditioner is used in multiple rooms sharing one air conditioner, which leads to the intercommunication and mixing of air in each room. Purifying the air in some rooms according to the prior art directed to a single room can easily lead to the simultaneous pollution in other rooms, and at the same time, the temperature control effect in other rooms is also adversely affected.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those skilled in the art. SUMMARY

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This application provides a control method, control device, and intelligent air conditioner for multi-room zoned air purification, which reduces or even eliminates the adverse effects on the temperature control effect and air quality of other rooms when purifying the air in some rooms of a multi-room system.

[0009] In some embodiments, multiple rooms are provided with cooling / heating by an air conditioner; multiple rooms are purified by a fresh air unit / purification unit; the air conditioner and the fresh air unit / purification unit supply air to each room through supply air ducts and absorb air from each room through return air ducts; each room is equipped with an air outlet and a return air outlet, with an air outlet valve and a return air valve. The control method for multi-room zoned air purification includes:

[0010] Enter purification mode and obtain the first duration that is positively correlated with the pollution rate of the first room;

[0011] The second duration is determined based on the first duration and the expected pressure reduction rate; wherein, the expected pressure reduction rate is used to represent the pressure reduction rate of the second room after the supply air valve and the return air valve are closed;

[0012] During the second duration, a preset amount of cold / heat is provided to the second room, so that the second room stores cold / heat, and at the end of the second duration, the actual pressure increase of the second room is greater than or equal to the expected pressure decrease of the second room during the first duration.

[0013] At the end of the second duration, the first duration is shortened to obtain a third duration based on the degree of matching between the cold / heat storage of the second room and the temperature requirements of the second room, and fresh air is provided to the first room during the third duration; wherein, the worse the matching degree, the more the first duration is shortened.

[0014] The multi-room zoned air purification control method provided in this application embodiment can achieve the following technical effects:

[0015] Multiple rooms are supplied with cooling / heating by one air conditioner, and multiple rooms are purified by one fresh air unit / purification unit. The air conditioner and the fresh air unit / purification unit supply air to each room through the supply air duct and absorb air from each room through the return air duct. This means that the rooms are interconnected, the air in each room is easily mixed, and, with the total air volume remaining constant, a change in the air volume of a single room will simultaneously cause a change in the air volume of other rooms.

[0016] A first duration positively correlated with the pollution rate of the first room is obtained. In subsequent steps, this first duration is converted into the duration of providing fresh air to the first room (third duration). The higher the pollution rate of the first room, the longer the first duration, which is beneficial for reducing the concentration of pollutants in the first room to a compliant level in subsequent steps.

[0017] The expected pressure reduction rate is used to represent the pressure reduction rate of the second room after the supply air valve and return air valve are closed. During the process of supplying fresh air to the first room, the supply air valve and return air valve of the second room are in the closed state. Since there is a correspondence between the first duration and the subsequent third duration, the expected pressure reduction value of the second room during the first duration can indicate that the pressure in the second room is in a decreasing state in the subsequent steps. That is, during the process of supplying fresh air to the first room during the third duration, the pressure in the first room is lower than the pressure in the second room.

[0018] In this case, a second duration is determined based on the first duration and the expected rate of pressure reduction, so that when ventilation is introduced into the second room during the second duration, the pressure in the second room is increased. Specifically, the actual increase in pressure in the second room is greater than or equal to the expected decrease in pressure in the second room during the first duration.

[0019] During the second period of ventilation into the second room, the pressure in the second room increases, and cold / heat energy flows into the second room, giving the second room an overall cold / heat storage effect. Because there is no ventilation into the second room during the third period, but the pressure in the second room is high, air from the second room can flow into the first room or outdoors through the gaps between the rooms. This will gradually reduce the original cooling / heating effect in the second room.

[0020] The third duration for providing fresh air to the first room is derived by shortening the first duration. The worse the match between the cold / heat storage in the second room and its temperature requirements, the more the first duration is shortened and the shorter the third duration becomes. In other words, the shorter the duration for stopping the supply of cold / heat to the second room, the better to reduce the adverse effects on the original cooling / heating effect of the second room.

[0021] Meanwhile, the third duration is obtained by shortening the first duration, so the third duration is shorter than the first duration. The first duration is the expected duration of pressure reduction in the second room, and the third duration is the actual duration of pressure reduction in the second room. During the second duration, the actual pressure increase in the second room is to cope with the first duration. At this time, shortening the duration of pressure reduction in the second room is beneficial to maintaining positive pressure in the second room, so as to prevent air pollutants from the first room from entering the second room through airflow. This ensures that the process of purifying the air in the first room does not adversely affect the air quality in the second room.

[0022] According to the above process, the technical solution provided in this application embodiment can reduce or even eliminate the adverse effects on the temperature control effect and air quality of other rooms when purifying the air in some rooms of a multi-room system.

[0023] Optionally, the pollution rate of the first room is determined by: obtaining the air volume from the air outlet in the first room and the rate of rise of air pollutants in the first room; and determining a pollution rate that is positively correlated with both the air volume and the rate of rise. This determined pollution rate facilitates the determination of a more accurate first duration, thereby enabling the supply of fresh air to the first room during the third duration to more effectively reduce air pollutants in the first room.

[0024] Optionally, entering purification mode includes: simultaneously providing fresh air to each room when the air pollutant concentration in one or more rooms is greater than or equal to a first concentration threshold, and the air pollutant concentration in all rooms is less than a second concentration threshold; this is a case where the air pollution level in the room is relatively low, which is the first stage of the air purification process.

[0025] If the pollutant concentration in one or more rooms is greater than or equal to a first concentration threshold, the room with a pollutant concentration greater than or equal to a second concentration threshold is designated as the first room, and the room with a pollutant concentration less than the second concentration threshold is designated as the second room. A first duration positively correlated with the pollution rate of the first room is obtained. This is considered a case where the air pollution level in the room is relatively high, and it belongs to the second stage of the air purification process.

[0026] The negative impact of zoned air purification on the overall temperature regulation of the room is usually greater than that of non-zoned air purification. Adopting such a progressive purification scheme is beneficial to maintaining the air purification effect of each room at a better level overall.

[0027] Furthermore, after adopting such a progressive purification scheme, the pollution rate, which is positively correlated with the air volume and the rate of increase, is determined. This air volume is related to the purification effect of the first room in the first stage. Based on the air purification process in the first stage, determining the pollution rate in this way, rather than determining the first duration based on the absolute air pollutant concentration, is more conducive to determining a more accurate first duration.

[0028] Optionally, after the third time period ends, the multi-room zone air purification control method further includes: obtaining the purification rate of the first room; if the purification rate is greater than the purification threshold, it indicates that the generation rate of air pollutants from the air pollution source in the first room is low; if the purification rate is greater than or equal to the purification threshold, it indicates that the generation rate of air pollutants from the air pollution source in the first room is still high.

[0029] When the purification rate is greater than the purification threshold and the air pollutant concentration in the first room is less than or equal to the second concentration threshold, fresh air is simultaneously supplied to all rooms. When the purification rate is less than or equal to the purification threshold and the air pollutant concentration in the first room is less than or equal to the second set threshold, it indicates that the first room still requires air purification. The fact that the air pollutant concentration in the first room is less than or equal to the second set threshold means that even if air from the first room flows into the second room, it is permissible. In this case, a first duration negatively correlated with the purification rate is determined, and the subsequent steps are repeated until a newly determined third duration ends, at which point the purification rate of the first room is regained. This repeated purification process is based on the premise that the adverse effects of the air pollutant concentration in the first room on the air quality of the second room are within an acceptable range, and that the adverse effects on the temperature control effect of the second room are low. Under these conditions, the air purification needs of the first room are met again.

[0030] Optionally, during the second duration, a preset cooling / heating capacity is provided to the second room, including: closing the air supply valve and return air valve of the first room, and opening the air supply valve and return air valve of the second room to isolate the first room and prevent the air in the first room from participating in air circulation.

[0031] The opening degree of the air outlet valve, the opening degree of the air return valve, the speed of the indoor air conditioner fan, and the frequency of the air conditioner compressor in the second room are controlled according to the temperature difference between the indoor temperature of the second room and the set temperature; or, the speed of the indoor air conditioner fan is adjusted to the highest speed, the frequency of the air conditioner compressor is adjusted to the highest frequency, and the opening degree of the air outlet valve in the second room is set to the maximum opening degree; wherein, the opening degree of the air outlet valve in the second room is greater than or equal to the opening degree of the air return valve, so that the second room can simultaneously achieve the effects of cold / heat storage and pressure increase.

[0032] Optionally, a preset cooling / heating capacity is provided to the second room during the second duration, including: obtaining the expected pressure reduction value of the second room during the first duration; detecting the actual pressure increase value of the second room in real time; and controlling the opening difference between the air supply valve and the air return valve of the second room based on the pressure difference between the actual pressure increase value and the expected pressure reduction value; wherein the pressure difference value and the opening difference value are positively correlated. This is so that at the end of the second duration, the actual pressure increase value of the second room is greater than or equal to the expected pressure reduction value of the second room during the first duration.

[0033] Optionally, fresh air is supplied to the first room during the third time period, including: closing the air supply valve and return valve of the second room, opening the air supply valve and return valve of the first room, so that the air in the second room does not participate in the circulation, and preventing the air with a high concentration of air pollutants in the first room from flowing into the second room through the duct circulation.

[0034] When fresh air is provided through a fresh air system, the speed of the indoor air conditioner fan and the frequency of the air conditioner compressor are controlled based on the fresh air volume provided by the fresh air system, the fresh air temperature, the temperature difference between the indoor temperature of the first room and the set temperature. When fresh air is provided through a purification system, the speed of the indoor air conditioner fan and the frequency of the air conditioner compressor are controlled based on the fresh air volume provided by the fresh air system, the temperature difference between the indoor temperature of the first room and the set temperature, so as to reduce the concentration of air pollutants in the first room while maintaining the temperature control effect in the first room.

[0035] In some embodiments, multiple rooms are provided with cooling / heating by an air conditioner; multiple rooms are purified by a fresh air unit / purification unit; the air conditioner and the fresh air unit / purification unit supply air to each room through supply air ducts and absorb air from each room through return air ducts; each room is provided with an air outlet and a return air outlet, the air outlet is provided with an air outlet valve, and the return air outlet is provided with a return air valve; the control device for multi-room zoned air purification includes a first acquisition module, a determination module, a first control module, and a second control module.

[0036] The first acquisition module is used to enter the purification mode and acquire a first duration that is positively correlated with the pollution rate of the first room;

[0037] The determining module is used to determine a second duration based on a first duration and an expected pressure reduction rate; wherein, the expected pressure reduction rate is used to represent the pressure reduction rate of the second room after the supply air valve and return air valve are closed;

[0038] The first control module is used to provide preset cooling / heat to the second room during the second duration, so that the second room stores cold / heat, and the actual pressure increase of the second room at the end of the second duration is greater than or equal to the expected pressure decrease of the second room during the first duration.

[0039] The second control module is used to shorten the first duration to obtain a third duration at the end of the second duration based on the degree of matching between the cold / heat storage status of the second room and the temperature requirements of the second room, and to provide fresh air to the first room during the third duration; wherein, the worse the matching degree, the more the first duration is shortened.

[0040] In some embodiments, the control device for multi-room zoned air purification includes a processor and a memory storing program instructions, wherein the processor is configured to execute the multi-room zoned air purification control method provided in the foregoing embodiments when executing the program instructions.

[0041] In some embodiments, the smart air conditioner includes:

[0042] Air conditioner unit;

[0043] The multi-room zoned air purification control device provided in the aforementioned embodiment is installed on the air conditioner body.

[0044] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0045] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrative descriptions and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are considered similar elements, and wherein:

[0046] Figure 1 This is a schematic diagram of an implementation scenario of a ducted split air conditioner provided in an embodiment of this application;

[0047] Figure 2 This is a schematic flowchart of a multi-room zoned air purification control method provided in an embodiment of this application;

[0048] Figure 3 This is a schematic flowchart of a multi-room zoned air purification control method provided in an embodiment of this application;

[0049] Figure 4a and Figure 4b This is a schematic diagram of an implementation scenario of a ducted split air conditioner provided in an embodiment of this application;

[0050] Figure 5 This is a schematic diagram of a multi-room zoned air purification control device provided in an embodiment of this application;

[0051] Figure 6 This is a schematic diagram of a multi-room zoned air purification control device provided in an embodiment of this application;

[0052] Figure 7 This is a schematic diagram of an intelligent air conditioner provided in an embodiment of this application. Detailed Implementation

[0053] To provide a more detailed understanding of the features and technical content of the embodiments of this application, the implementation of the embodiments of this application will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this application. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0054] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0055] Unless otherwise stated, the term "multiple" means two or more.

[0056] In this embodiment, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0057] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0058] Figure 1 This is a schematic diagram of an implementation scenario of a ducted split air conditioner provided in an embodiment of this application.

[0059] Combination Figure 1 As shown, the indoor unit 11 of the air conditioner is usually installed in an indoor space, and is usually concealed, for example, it can be installed in the indoor ceiling 14, which can save the machine room area.

[0060] The indoor unit 11 of the air conditioner is connected to other rooms 15 without an indoor unit 11 through the air supply duct 12. After the air undergoes heat exchange in the indoor unit 11, it enters each room 15 through the air supply duct 12. An air valve is installed at the end of the air supply duct 12 in each room 15. By adjusting the opening of the air valve, the air volume entering the room 15 can be adjusted, thereby adjusting the indoor temperature.

[0061] The indoor unit 11 of the air conditioner absorbs air from each room 15 through the return air duct 13, and the air in the return air duct 13 and the supply air duct 12 exchange heat inside the indoor unit 11.

[0062] The cooling / heating principle of the ducted split air conditioner is similar to that of the ordinary split air conditioner. It consists of an indoor unit 11 and an outdoor unit (not shown in the figure), which are connected by copper pipes during installation.

[0063] The static pressure at the air outlet of the indoor unit 11 of a ducted split air conditioner is higher than that at the air outlet of the indoor unit of a regular split air conditioner; the single unit capacity of a ducted split air conditioner is also relatively large, generally available in various specifications such as 5 horsepower, 8 horsepower, 10 horsepower, and 12.5 horsepower; the length of the copper pipe that can be connected between the indoor unit 11 and the outdoor unit of a ducted split air conditioner is also longer, generally up to 50m, and the height difference between the indoor and outdoor units can reach 20m.

[0064] The fresh air unit / purification unit 16 shares a common air duct with the indoor air conditioning unit 11. The fresh air unit / purification unit 16 can be installed at the air inlet of the indoor air conditioning unit 11.

[0065] The aforementioned fresh air device refers to an independent device or accessory capable of introducing fresh air from outdoors to indoors; the aforementioned purification device refers to an independent device or accessory capable of filtering and adsorbing air pollutants. The fresh air device / purification device 16 may be a separate fresh air device or a separate purification device, or it may be a combination of both.

[0066] In this application embodiment, the term "air volume" refers to airflow rate, which is used to represent the amount of air circulating per unit time, and its unit can be m³ / s. 3 / h、m 3 / min, L / h, L / min, etc.

[0067] In the embodiments of this application, the performance of the air valve meets the requirements, specifically: when the air valve is closed, the air valve meets the common air-leakage judgment criteria in the field, and the impact of air leakage from the air valve can be disregarded.

[0068] In this application embodiment, only the implementation scenario of a ducted split air conditioner is used as an example for illustration. Other scenarios similar to this implementation scenario, such as the application scenario of central air conditioning, can also adopt this multi-room zone air purification control method, which will not be described in detail here.

[0069] Figure 2 This is a flowchart illustrating a multi-room zoned air purification control method provided in an embodiment of this application. This multi-room zoned air purification control method can be executed by the air conditioner controller, or, in a smart home scenario, it can also be executed by the smart home system server.

[0070] Multiple rooms are supplied with cooling / heating by one air conditioner; multiple rooms are purified by one fresh air unit / purification unit; the air conditioner and the fresh air unit / purification unit supply air to each room through the supply air duct and absorb air from each room through the return air duct; each room is equipped with an air outlet and a return air outlet, with an air outlet valve installed at the air outlet and a return air valve installed at the return air outlet.

[0071] Combination Figure 2 As shown, the control method for multi-room zoned air purification includes:

[0072] S201. Enter purification mode and obtain the first duration that is positively correlated with the pollution rate of the first room.

[0073] The number of first rooms can be one or more, and the other rooms besides the first rooms are second rooms, and the number of second rooms can also be one or more.

[0074] Entering purification mode indicates that the concentration of air pollutants in the first room is high, requiring air purification. At this time, the second room may or may not require air purification.

[0075] In the embodiments of this application, in addition to the types of pollutants listed in the background art, air pollutants may also be total volatile organic compounds (TVOC).

[0076] The second room may not require air purification if the air pollutant concentration in the first room is greater than or equal to a first concentration threshold, while the air pollutant concentration in the second room is less than the first concentration threshold. This first concentration threshold is used to assess whether a room requires air purification. Those skilled in the art can set this first concentration threshold based on experience; for example, if the user has high requirements for air quality, the first concentration threshold will be relatively small; if the user has low requirements for air quality, the first concentration threshold can be relatively large.

[0077] The second room requires air purification if the air pollutant concentration in the first room is greater than or equal to a second concentration threshold, and the air pollutant concentration in the second room is greater than or equal to a first concentration threshold but less than the second concentration threshold. The second concentration threshold is used to measure the severity of air pollution in the room, and those skilled in the art can determine this second concentration threshold based on actual needs. For example, if the user has high requirements for air quality, the second concentration threshold will be relatively low; if the user has low requirements for air quality, the second concentration threshold can be relatively high.

[0078] The first duration is the expected duration for ventilating fresh air into the first room. If the pollution rate is high, a longer duration is needed to reduce the pollution rate; if the pollution rate is low, a shorter duration is needed to reduce the pollution rate.

[0079] The first duration is positively correlated with the contamination rate of the first room, and is also affected by the volume of the first room. Generally, the larger the volume of the first room, the longer the first duration; the smaller the volume of the first room, the shorter the first duration.

[0080] Since the volume of the first room is usually a fixed value, it will not be described in detail in this application.

[0081] The correspondence between the first pollution rate and the first duration can be obtained through experimentation. For example, a pollution source for the experiment is set up in the first room, and the pollution rate of the first room is detected. Then, fresh air is introduced into the first room, and the change in the pollution rate is detected in real time until the pollution rate meets the requirements and the concentration of air pollutants in the first room also meets the requirements. The duration of fresh air is recorded, and this duration is used as the first duration.

[0082] It can be represented in the form of a one-to-one correspondence data table, or it can be represented in the form of a formula. After obtaining the contamination rate of the first room, the first duration corresponding to the contamination rate of the first room can be obtained through the one-to-one correspondence data table or formula.

[0083] Optionally, the pollution rate of the first room is determined by: obtaining the rate of increase of air pollutants in the first room; and determining the pollution rate based on the rate of increase. For example, the rate of increase of the concentration of air pollutants in the first room can be used as the pollution rate; or, the rate of increase of the concentration of air pollutants in the first room can be fine-tuned to increase or decrease the rate of increase, and the fine-tuned rate of increase can be used as the pollution rate.

[0084] Optionally, the pollution rate of the first room is determined by: obtaining the air volume from the air outlet in the first room and the rate of rise of air pollutants in the first room; and determining a pollution rate that is positively correlated with both the air volume and the rate of rise. This determined pollution rate facilitates the determination of a more accurate first duration, thereby enabling the supply of fresh air to the first room during the third duration to more effectively reduce air pollutants in the first room.

[0085] S202. Determine the second duration based on the first duration and the expected rate of pressure reduction.

[0086] The expected pressure reduction rate is used to represent the pressure reduction rate of the second room after the supply air valve and return air valve are closed, that is, to represent the pressure reduction rate of the second room during the process of supplying fresh air to the first room.

[0087] The expected pressure reduction rate can be obtained experimentally. For example, during the experiment, the second room is first ventilated to maintain a slightly positive pressure relative to the outside. Then, the air supply and return valves of the second room are closed. The air supply and return valves of the first room are opened to allow normal ventilation, making the pressure in the first room the same as or negatively pressured than the outside air pressure. During the ventilation of the first room, the pressure value of the second room is monitored in real time. The actual pressure reduction rate of the second room during the experiment is then obtained and used as the expected pressure reduction rate of the second room during normal operation of this control method.

[0088] Alternatively, the expected rate of pressure reduction can be obtained by creating a room model.

[0089] The second duration is positively correlated with the first duration; the longer the first duration, the longer the second duration; the shorter the first duration, the shorter the second duration.

[0090] The second duration is positively correlated with the expected rate of pressure reduction; the greater the expected rate of pressure reduction, the longer the second duration; the smaller the expected rate of pressure reduction, the shorter the second duration.

[0091] S203, Provide preset cooling / heating to the second room within the second duration.

[0092] Providing preset cooling / heating capacity in this way allows the second room to store cold / heat, and the actual pressure increase in the second room at the end of the second period is greater than or equal to the expected pressure decrease in the second room during the first period. Ensuring that the actual pressure increase in the second room reaches such a level helps maintain a negative pressure in the first room relative to the second room during the process of supplying fresh air.

[0093] The preset cooling capacity / preset heating capacity is related to the cooling / heating demand of the second room. That is, the temperature difference between the indoor temperature of the second room and the set temperature is positively correlated with the preset cooling capacity / preset heating capacity. The preset cooling capacity / preset heating capacity can be determined based on this positive correlation.

[0094] The higher the preset cooling / heating capacity, the greater the temperature decrease / increase in the second room during the process of providing fresh air to the first room; the lower the preset cooling / heating capacity, the smaller the temperature decrease / increase in the second room during the process of providing fresh air to the first room.

[0095] During the second period of time, while providing preset cooling / heat to the second room, the air supply valve and return valve of the first room are closed, and the air supply valve and return valve of the second room are opened to isolate the first room and prevent the air in the first room from participating in air circulation.

[0096] Optionally, providing preset cooling / heating capacity to the second room during the second duration may include: controlling the opening degree of the air outlet valve, the opening degree of the air return valve, the speed of the indoor air conditioner fan, and the frequency of the air conditioner compressor in the second room based on the temperature difference between the indoor temperature of the second room and the set temperature; wherein the opening degree of the air outlet valve in the second room is greater than or equal to the opening degree of the air return valve, so that the second room simultaneously achieves the effects of cooling / heat storage and pressure increase.

[0097] Optionally, providing preset cooling / heating capacity to the second room during the second duration may include: adjusting the speed of the indoor air conditioner fan to the highest speed, adjusting the frequency of the air conditioner compressor to the highest frequency, and setting the opening of the air outlet valve of the second room to the maximum opening; wherein the opening of the air outlet valve of the second room is greater than or equal to the opening of the return air valve, so that the second room simultaneously achieves the effects of cooling / heat storage and pressure increase.

[0098] During the second period, while providing preset cooling / heating to the second room, the expected pressure reduction value of the second room during the first period can be obtained. The actual pressure increase value of the second room is detected in real time, and based on the pressure difference between the actual pressure increase value and the expected pressure reduction value, the opening difference between the air supply valve and the air return valve of the second room is controlled. The pressure difference and the opening difference are positively correlated: the larger the pressure difference, the larger the opening difference; the smaller the pressure difference, the smaller the opening difference. This ensures that at the end of the second period, the actual pressure increase value of the second room is greater than or equal to the expected pressure reduction value of the second room during the first period.

[0099] In practical applications, the maximum rate at which cooling capacity is supplied to the second room is limited by hardware or comfort air supply, and the maximum rate at which heating capacity is supplied to the second room is also limited by hardware or comfort air supply.

[0100] Furthermore, the temperature difference between the second room's indoor temperature and the set temperature may vary considerably; the duration of the second session also depends on the actual situation.

[0101] This leads to the following phenomenon:

[0102] Assuming the preset cooling / heating capacity represents the actual cooling / heating demand of the second room, the actual cooling / heating capacity supplied to the second room during the second period may be less than the preset cooling / heating capacity; conversely, the actual cooling / heating capacity supplied to the second room during the second period may also be equal to the preset cooling / heating capacity.

[0103] In the case where the aforementioned preset cooling capacity / preset heating capacity represents the actual cooling capacity / heating capacity that the second room can obtain within the second time period, the preset cooling capacity / preset heating capacity may not meet the actual cooling / heating needs of the second room, or the preset cooling capacity / preset heating capacity may meet the actual cooling / heating needs of the second room.

[0104] The actual cooling / heating demand of the second room refers to the amount of cooling / heating required by the second room to maintain temperature control during the process of supplying fresh air to the first room in the third time period.

[0105] S204. At the end of the second duration, based on the degree of matching between the cold / heat storage of the second room and the temperature requirement of the second room, the first duration is shortened to obtain a third duration, and fresh air is provided to the first room during the third duration.

[0106] The worse the match, the shorter the first duration.

[0107] When the preset cooling capacity / preset heating capacity represents the actual cooling / heating demand of the second room, and the actual cooling capacity / heating capacity supplied to the second room within the second time period is equal to the preset cooling capacity / preset heating capacity, and when the preset cooling capacity / preset heating capacity represents the actual cooling / heating capacity that the second room can obtain within the second time period, and the preset cooling capacity / preset heating capacity can meet the actual cooling / heating demand of the second room, it indicates that the degree of matching between the cold / heat storage situation of the second room and the temperature demand of the second room is relatively high. In this case, the first time period does not need to be shortened or the reduction value of the first time period is relatively small.

[0108] When the preset cooling capacity / preset heating capacity represents the actual cooling / heating demand of the second room, and the actual cooling capacity / heating capacity supplied to the second room within the second time period is less than the preset cooling capacity / preset heating capacity, and when the preset cooling capacity / preset heating capacity represents the actual cooling / heating capacity that the second room can obtain within the second time period, and the preset cooling capacity / preset heating capacity is also insufficient to meet the actual cooling / heating demand of the second room, it indicates that the degree of matching between the cold / heat storage situation of the second room and the temperature demand of the second room is relatively high, and the first time period is shortened significantly.

[0109] In this embodiment, multiple rooms are provided with cooling / heating by an air conditioner, and multiple rooms are purified by a fresh air unit / purification unit. The air conditioner and the fresh air unit / purification unit supply air to each room through the air supply duct and absorb air from each room through the return air duct. This means that the rooms are interconnected, the air in each room is easily mixed, and, with the total air volume remaining constant, a change in the air volume of a single room will simultaneously cause a change in the air volume of other rooms.

[0110] A first duration positively correlated with the pollution rate of the first room is obtained. In subsequent steps, this first duration is converted into the duration of providing fresh air to the first room (third duration). The higher the pollution rate of the first room, the longer the first duration, which is beneficial for reducing the concentration of pollutants in the first room to a compliant level in subsequent steps.

[0111] The expected pressure reduction rate is used to represent the pressure reduction rate of the second room after the supply air valve and return air valve are closed. During the process of supplying fresh air to the first room, the supply air valve and return air valve of the second room are in the closed state. Since there is a correspondence between the first duration and the subsequent third duration, the expected pressure reduction value of the second room during the first duration can indicate that the pressure in the second room is in a decreasing state in the subsequent steps. That is, during the process of supplying fresh air to the first room during the third duration, the pressure in the first room is lower than the pressure in the second room.

[0112] In this case, a second duration is determined based on the first duration and the expected rate of pressure reduction, so that when ventilation is introduced into the second room during the second duration, the pressure in the second room is increased. Specifically, the actual increase in pressure in the second room is greater than or equal to the expected decrease in pressure in the second room during the first duration.

[0113] During the second period of ventilation into the second room, the pressure in the second room increases, and cold / heat energy flows into the second room, giving the second room an overall cold / heat storage effect. Because there is no ventilation into the second room during the third period, but the pressure in the second room is high, air from the second room can flow into the first room or outdoors through the gaps between the rooms. This will gradually reduce the original cooling / heating effect in the second room.

[0114] The third duration for providing fresh air to the first room is derived by shortening the first duration. The worse the match between the cold / heat storage in the second room and its temperature requirements, the more the first duration is shortened and the shorter the third duration becomes. In other words, the shorter the duration for stopping the supply of cold / heat to the second room, the better to reduce the adverse effects on the original cooling / heating effect of the second room.

[0115] Meanwhile, the third duration is obtained by shortening the first duration, so the third duration is shorter than the first duration. The first duration is the expected duration of pressure reduction in the second room, and the third duration is the actual duration of pressure reduction in the second room. During the second duration, the actual pressure increase in the second room is to cope with the first duration. At this time, shortening the duration of pressure reduction in the second room is beneficial to maintaining positive pressure in the second room, so as to prevent air pollutants from the first room from entering the second room through airflow. This ensures that the process of purifying the air in the first room does not adversely affect the air quality in the second room.

[0116] According to the above process, the technical solution provided in this application embodiment can reduce or even eliminate the adverse effects on the temperature control effect and air quality of other rooms when purifying the air in some rooms of a multi-room system.

[0117] The following is an example of the purification mode.

[0118] The purification mode can include two phases.

[0119] Optionally, entering purification mode includes: simultaneously providing fresh air to each room when the air pollutant concentration in one or more rooms is greater than or equal to a first concentration threshold, and the air pollutant concentration in all rooms is less than a second concentration threshold; this is a case where the air pollution level in the room is relatively low, which is the first stage of the air purification process.

[0120] If the pollutant concentration in one or more rooms is greater than or equal to a first concentration threshold, the room with a pollutant concentration greater than or equal to a second concentration threshold is designated as the first room, and the room with a pollutant concentration less than the second concentration threshold is designated as the second room. A first duration positively correlated with the pollution rate of the first room is obtained. This is considered a case where the air pollution level in the room is relatively high, and it belongs to the second stage of the air purification process.

[0121] The first stage of the air purification process and the second stage of the air purification process can be switched between each other.

[0122] The negative impact of zoned air purification on the overall temperature regulation of the room is usually greater than that of non-zoned air purification. Adopting such a progressive purification scheme is beneficial to maintaining the air purification effect of each room at a better level overall.

[0123] Furthermore, after adopting such a progressive purification scheme, the pollution rate, which is positively correlated with the air volume and the rate of increase, is determined. This air volume is related to the purification effect in the first room during the first stage. Based on the air purification process in the first stage, determining the pollution rate in this way, compared to determining the first duration based on the absolute air pollutant concentration, is more conducive to determining a more accurate first duration. Therefore, when fresh air is supplied to the first room during the third duration, the concentration of air pollutants in the first room is effectively reduced.

[0124] In most cases, after fresh air is provided to the first room within the third time period, the concentration of air pollutants in the first room can be reduced to meet the requirements, that is, the concentration of air pollutants in the first room is less than or equal to the first set threshold, or the concentration of air pollutants in the first room is less than or equal to the second set threshold.

[0125] This is related to the fresh air capacity of the fresh air unit / purification unit, that is, at the end of the third time period, the fresh air capacity of the fresh air unit / purification unit is able to make the air pollutant concentration in the first room less than or equal to the first set threshold, or less than or equal to the second set threshold.

[0126] Figure 3 This is a flowchart illustrating a multi-room zoned air purification control method provided in an embodiment of this application. This multi-room zoned air purification control method can be executed by the air conditioner controller, or, in a smart home scenario, it can also be executed by the smart home system server.

[0127] Multiple rooms are supplied with cooling / heating by one air conditioner; multiple rooms are purified by one fresh air unit / purification unit; the air conditioner and the fresh air unit / purification unit supply air to each room through the supply air duct and absorb air from each room through the return air duct; each room is equipped with an air outlet and a return air outlet, with an air outlet valve installed at the air outlet and a return air valve installed at the return air outlet.

[0128] Combination Figure 3 As shown, the control method for multi-room zoned air purification includes:

[0129] S301. Enter purification mode and obtain the first duration that is positively correlated with the pollution rate of the first room.

[0130] S302. Determine the second duration based on the first duration and the expected rate of pressure reduction.

[0131] The expected pressure reduction rate is used to represent the pressure reduction rate of the second room after the supply and return air valves are closed.

[0132] S303, Provide preset cooling / heating to the second room within the second duration.

[0133] The second room is designed to store cold / heat, and at the end of the second duration, the actual pressure increase in the second room is greater than or equal to the expected pressure decrease in the second room during the first duration.

[0134] S304. At the end of the second duration, based on the degree of matching between the cold / heat storage of the second room and the temperature requirements of the second room, the first duration is shortened to obtain a third duration, and fresh air is provided to the first room during the third duration.

[0135] The worse the match, the shorter the first duration.

[0136] S305, Obtain the purification rate of the first room.

[0137] The purification rate is expressed as the rate at which the concentration of air pollutants in the first room decreases. If the purification rate is greater than the purification threshold, it indicates that the rate at which air pollutants are generated from the source of air pollution in the first room is low. At this time, the system can be switched to the first stage of purification mode, which means that fresh air is supplied to all rooms at the same time; or, the purification mode can be exited.

[0138] If the purification rate is greater than or equal to the purification threshold, it means that the rate at which air pollutants are generated from the source of air pollution in the first room is still too high. In this case, if the purification mode is switched to the first stage, that is, fresh air is supplied to each room at the same time, the high rate at which air pollutants are generated in the first room will easily cause the concentration of air pollutants in each room to rise, which is not conducive to the fundamental purpose of air purification. Of course, if the purification mode is exited at this time, it will cause the concentration of air pollutants in each room to rise, which does not meet the fundamental purpose of air purification.

[0139] S306. When the purification rate is greater than the purification threshold and the concentration of air pollutants in the first room is less than or equal to the second concentration threshold, fresh air is simultaneously supplied to each room.

[0140] S307. When the purification rate is less than or equal to the purification threshold and the concentration of air pollutants in the first room is less than or equal to the second set threshold, determine a first duration that is negatively correlated with the purification rate and execute S302.

[0141] If the purification rate is less than or equal to the purification threshold, it indicates that the first room still requires air purification. If the air pollutant concentration in the first room is less than or equal to the second set threshold, it means that even if air from the first room flows into the second room, it is permissible. In this case, the subsequent steps are repeated until the redefined third time period ends, at which point the purification rate of the first room is regained. This repeated purification process is based on the premise that the adverse effects of the air pollutant concentration in the first room on the air quality of the second room are within an acceptable range, and that the adverse effects on the temperature control effect of the second room are low. Under these conditions, the air purification needs of the first room are met again.

[0142] Figure 1 The diagram shows that the fresh air unit / purification unit 16 shares an air duct with the indoor air conditioning unit 11, and the fresh air unit / purification unit 16 can be installed at the air inlet of the indoor air conditioning unit 11. In this case, the fresh air unit / purification unit 16 can be an independent fresh air unit.

[0143] refer to Figure 4a As shown, the fresh air unit / purification unit 16 shares an air duct with the indoor air conditioning unit 11, and the fresh air unit / purification unit 16 can be installed at the air outlet of the indoor air conditioning unit 11. In this case, the fresh air unit / purification unit can be an independent purification unit.

[0144] refer to Figure 4b As shown, the ductwork of the fresh air unit / purification device 16 is connected in parallel with the ductwork of the indoor air conditioning unit 11. The return air vent of the fresh air unit / purification device 16 is connected to the return air vent of the indoor air conditioning unit 11, and the air outlet of the fresh air unit / purification device 16 is connected to the air outlet of the indoor air conditioning unit 11. In this case, the fresh air unit / purification device can be a purification device, or a combination of a fresh air unit and a purification device.

[0145] Based on the above-mentioned implementation scenarios of ducted split air conditioners, an exemplary description is given of providing fresh air to the first room within the third time period.

[0146] Optionally, fresh air is supplied to the first room during the third time period, including: closing the air supply valve and return valve of the second room, opening the air supply valve and return valve of the first room, so that the air in the second room does not participate in the circulation, and preventing the air with a high concentration of air pollutants in the first room from flowing into the second room through the duct circulation.

[0147] Refer again Figure 1 and Figure 4b As shown, when fresh air is provided through a fresh air unit, the speed of the indoor air conditioner fan and the frequency of the air conditioner compressor are controlled according to the fresh air volume provided by the fresh air unit, the fresh air temperature, the temperature difference between the indoor temperature of the first room and the set temperature.

[0148] Refer again Figure 4a and Figure 4b As shown, when fresh air is provided through the purification device, the speed of the indoor air conditioner fan and the frequency of the air conditioner compressor are controlled according to the fresh air volume provided by the fresh air device, the temperature difference between the indoor temperature of the first room and the set temperature, so as to reduce the concentration of air pollutants in the first room while maintaining the temperature control effect in the first room.

[0149] Regardless of the implementation scenario, the airflow in the first room must be ensured.

[0150] exist Figure 1 This can be achieved by controlling the speed of the indoor air conditioner fan. If the fresh air system has an independent fan, the air volume in the first room can be ensured by controlling the speed of both the indoor air conditioner fan and the independent fan of the fresh air system.

[0151] exist Figure 4a In this system, the airflow in the first room can be ensured by controlling the speed of the indoor air conditioner fan.

[0152] exist Figure 4b In this system, the airflow ratio between the indoor air conditioning unit 11 and the fresh air / purification device 16 can be achieved by adjusting the speed of the indoor air conditioning fan and the fan speed of the purification device, or by adjusting the speed of the indoor air conditioning fan and the fan speed of the device combining the fresh air device and the purification device. This ensures that while maintaining the airflow (total airflow) of the first room, the fresh air volume (the airflow that can purify the air pollutants in the first room) and the temperature control effect of the first room can also be maintained.

[0153] As mentioned in the foregoing embodiments, the number of first rooms can be one or more. When there is only one first room, the indoor air conditioner fan can be adjusted to its lowest speed and the compressor to its lowest frequency. Of course, these lowest speeds and frequencies are merely illustrative examples, representing only one possible scenario to meet the air purification and temperature control requirements of the first room. Those skilled in the art can, in conjunction with the foregoing description of providing fresh air to the first room within the third time period, and based on specific experience and needs, reasonably control the indoor air conditioner fan speed and compressor frequency; these will not be elaborated upon here.

[0154] Figure 5 This is a schematic diagram of a multi-room zoned air purification control device provided in an embodiment of this application. This multi-room zoned air purification control device can be implemented through software, hardware, or a combination of both.

[0155] Multiple rooms are supplied with cooling / heating by one air conditioner; multiple rooms are purified by one fresh air unit / purification unit; the air conditioner and the fresh air unit / purification unit supply air to each room through the supply air duct and absorb air from each room through the return air duct; each room is equipped with an air outlet and a return air outlet, with an air outlet valve installed at the air outlet and a return air valve installed at the return air outlet.

[0156] Combination Figure 5 As shown, the multi-room zoned air purification control device 50 includes a first acquisition module 51, a determination module 52, a first control module 53, and a second control module 54.

[0157] The first acquisition module 51 is used to enter the purification mode and acquire a first duration that is positively correlated with the pollution rate of the first room;

[0158] The determining module 52 is used to determine a second duration based on a first duration and an expected pressure reduction rate; wherein, the expected pressure reduction rate is used to represent the pressure reduction rate of the second room after the outlet air valve and the return air valve are closed;

[0159] The first control module 53 is used to provide a preset cooling capacity / preset heating capacity to the second room during the second duration, so that the second room stores cold / heat, and the actual pressure increase value of the second room at the end of the second duration is greater than or equal to the expected pressure decrease value of the second room during the first duration.

[0160] The second control module 54 is used to shorten the first duration to obtain a third duration at the end of the second duration based on the degree of matching between the cold / heat storage of the second room and the temperature requirement of the second room, and to provide fresh air to the first room during the third duration; wherein, the worse the matching degree, the more the first duration is shortened.

[0161] Optionally, the pollution rate of the first room is determined by: obtaining the air volume of the air outlet in the first room and the rate of increase of the concentration of air pollutants in the first room; and determining the pollution rate that is positively correlated with the air volume and the rate of increase.

[0162] Optionally, the first obtaining module 51 includes:

[0163] The first judgment unit is used to simultaneously provide fresh air to each room when the concentration of air pollutants in one or more rooms is greater than or equal to a first concentration threshold, and the concentration of air pollutants in all rooms is less than a second concentration threshold.

[0164] The second judgment unit is used to determine, when the pollutant concentration in one or more rooms is greater than or equal to a first concentration threshold, to designate a room with a pollutant concentration greater than or equal to a second concentration threshold as a first room and a room with a pollutant concentration less than the second concentration threshold as a second room, and to obtain a first duration that is positively correlated with the pollution rate of the first room.

[0165] Optionally, the multi-room zone air purification control device 50 also includes a second acquisition module, a first judgment module, and a second judgment module.

[0166] The second acquisition module is used to obtain the purification rate of the first room after the third time period ends;

[0167] The first judgment module is used to simultaneously provide fresh air to each room when the purification rate is greater than the purification threshold and the concentration of air pollutants in the first room is less than or equal to the second concentration threshold.

[0168] The second judgment module is used to determine a first duration negatively correlated with the purification rate when the purification rate is less than or equal to the purification threshold and the concentration of air pollutants in the first room is less than or equal to the second set threshold, and then jump to the first control module 53.

[0169] Optionally, the first control module 53 includes a first control unit; the first control unit is used to close the air supply valve and return air valve of the first room, and open the air supply valve and return air valve of the second room.

[0170] Optionally, the second control module 54 includes a second control unit or a third control unit; the second control unit is used to control the opening degree of the air outlet valve, the opening degree of the return air valve, the speed of the indoor air conditioner fan, and the frequency of the air conditioner compressor in the second room according to the temperature difference between the indoor temperature of the second room and the set temperature; the third control unit is used to adjust the speed of the indoor air conditioner fan to the highest speed, adjust the frequency of the air conditioner compressor to the highest frequency, and set the opening degree of the air outlet valve in the second room to the maximum opening degree; wherein, the opening degree of the air outlet valve in the second room is greater than or equal to the opening degree of the return air valve.

[0171] Optionally, the first control module 53 includes an acquisition unit, a detection unit, and a fourth control unit.

[0172] The acquisition unit is used to acquire the expected pressure reduction value of the second room within the first time period; the detection unit is used to detect the actual pressure increase value of the second room in real time; the fourth control unit is used to control the opening difference between the air outlet valve and the air return valve of the second room based on the pressure difference between the actual pressure increase value and the expected pressure reduction value; wherein, the pressure difference value and the opening difference value are positively correlated.

[0173] Optionally, the second control module 54 includes a fifth control unit; the fifth control unit is used to close the air supply valve and return valve of the second room, and open the air supply valve and return valve of the first room.

[0174] Optionally, the second control module 54 includes a sixth control unit and / or a seventh control unit.

[0175] The sixth control unit is used to control the speed of the indoor air conditioner fan and the frequency of the air conditioner compressor when fresh air is provided through the fresh air device, based on the fresh air volume provided by the fresh air device, the fresh air temperature, the temperature difference between the indoor temperature of the first room and the set temperature; the seventh control unit is used to control the speed of the indoor air conditioner fan and the frequency of the air conditioner compressor when fresh air is provided through the purification device, based on the fresh air volume provided by the fresh air device, the temperature difference between the indoor temperature of the first room and the set temperature.

[0176] In some embodiments, the control device for multi-room zoned air purification includes a processor and a memory storing program instructions. The processor is configured to execute the multi-room zoned air purification control method provided in the foregoing embodiments when executing the program instructions.

[0177] Figure 6 This is a schematic diagram of a multi-room zoned air purification control device provided in an embodiment of this application. (Combined with...) Figure 6 As shown, the multi-room zoned air purification control device 60 includes:

[0178] The processor 61 and memory 62 may also include a communication interface 63 and a bus 64. The processor 61, communication interface 63, and memory 62 can communicate with each other via the bus 64. The communication interface 63 can be used for information transmission. The processor 61 can call logical instructions in the memory 62 to execute the multi-room zoned air purification control method provided in the foregoing embodiments.

[0179] Furthermore, the logical instructions in the aforementioned memory 62 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0180] The memory 62, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this application. The processor 61 executes functional applications and data processing by running the software programs, instructions, and modules stored in the memory 62, thereby implementing the methods in the above-described method embodiments.

[0181] The memory 62 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 62 may include high-speed random access memory and may also include non-volatile memory.

[0182] Figure 7 This is a schematic diagram of an intelligent air conditioner provided in an embodiment of this application.

[0183] Combination Figure 7 As shown, the intelligent air conditioner 70 includes: an air conditioner body 71, and the aforementioned multi-room zone air purification control device 50 (60). The multi-room zone purification control device 50 (60) is installed in the air conditioner body 71. The installation relationship described herein is not limited to placement inside the air conditioner body 71, but also includes installation and connection with other components of the intelligent air conditioner 70, including but not limited to physical connection, electrical connection, or signal transmission connection. Those skilled in the art will understand that the multi-room zone purification control device 50 (60) can be adapted to any feasible air conditioner body 71 to achieve other feasible embodiments.

[0184] This application provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured as follows:

[0185] Enter purification mode and obtain the first duration that is positively correlated with the pollution rate of the first room;

[0186] The second duration is determined based on the first duration and the expected pressure reduction rate; wherein, the expected pressure reduction rate is used to represent the pressure reduction rate of the second room after the supply air valve and the return air valve are closed;

[0187] During the second duration, a preset amount of cold / heat is provided to the second room, so that the second room stores cold / heat, and at the end of the second duration, the actual pressure increase of the second room is greater than or equal to the expected pressure decrease of the second room during the first duration.

[0188] At the end of the second duration, based on the degree of matching between the cold / heat storage of the second room and the temperature requirements of the second room, the first duration is shortened to obtain a third duration, and fresh air is provided to the first room during the third duration; wherein, the worse the matching degree, the more the first duration is shortened;

[0189] Multiple rooms are supplied with cooling / heating by one air conditioner; multiple rooms are purified by one fresh air unit / purification unit; the air conditioner and the fresh air unit / purification unit supply air to each room through the supply air duct and absorb air from each room through the return air duct; each room is equipped with an air outlet and a return air outlet, with an air outlet valve installed at the air outlet and a return air valve installed at the return air outlet.

[0190] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium.

[0191] The technical solutions of this application embodiment can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods in this application embodiment. The aforementioned storage medium can be a non-transitory storage medium, including: USB flash drive, portable hard drive, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0192] The foregoing description and accompanying drawings fully illustrate embodiments of this application to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Additionally, when used in this application, the terms “comprise” and its variations “comprises” and / or “comprising” refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Unless otherwise specified, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes that element. In this document, each embodiment may focus on describing the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, then the relevant parts can be referred to the description of the method section.

[0193] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. 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 beyond the scope of the embodiments of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0194] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms. Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units. They may be located in one place or distributed across multiple network units. Some or all of the units can be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0195] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than those shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling multi-room zoned air purification, characterized in that, The multiple rooms are provided with cold / heat by one air conditioner; the multiple rooms are purified by one fresh air device / purification device; the air conditioner and the fresh air device / purification device supply air to each room through a supply air pipeline and absorb air from each room through a return air pipeline; each room is provided with an air outlet and an air return; the air outlet is provided with an air outlet valve, and the air return is provided with an air return valve; the control method comprises the following steps: When the air pollutant concentration in one or more rooms is greater than or equal to a first concentration threshold, and the air pollutant concentration in all rooms is less than a second concentration threshold, fresh air is supplied to each room at the same time; When the pollutant concentration in one or more rooms is greater than or equal to the first concentration threshold, the room with a pollutant concentration greater than or equal to the second concentration threshold is regarded as a first room, the room with a pollutant concentration less than the second concentration threshold is regarded as a second room, and a first time length positively correlated with the pollutant rate of the first room is obtained; A second time length is determined according to the first time length and an expected pressure reduction rate; the expected pressure reduction rate is used to represent the pressure reduction rate of the second room after the air outlet valve and the air return valve are closed; The air outlet valve and the air return valve of the first room are closed, and the air outlet valve and the air return valve of the second room are opened within the second time length; the second room is provided with preset cold / heat, so that the second room is cooled / heat stored, and the actual pressure increase value of the second room at the end of the second time length is greater than or equal to the expected pressure reduction value of the second room within the first time length; According to the matching degree between the cooling / heat storage condition of the second room and the temperature demand of the second room at the end of the second time length, the first time length is shortened to obtain a third time length, and the air outlet valve and the air return valve of the second room are closed, and the air outlet valve and the air return valve of the first room are opened within the third time length; fresh air is supplied to the first room; the worse the matching degree, the more the first time length is shortened.

2. The control method according to claim 1, characterized by, The pollutant rate of the first room is determined by the following steps: The air outlet flow rate of the air outlet in the first room and the rising rate of the air pollutant concentration in the first room are obtained; The pollutant rate positively correlated with the air outlet flow rate and the rising rate is determined.

3. The control method according to claim 1, characterized by, After the third time length ends, the control method further comprises the following steps: The purification rate of the first room is obtained; When the purification rate is greater than a purification threshold, and the air pollutant concentration in the first room is less than or equal to the second concentration threshold, fresh air is supplied to each room at the same time; When the purification rate is less than or equal to the purification threshold, and the air pollutant concentration in the first room is less than or equal to the second concentration threshold, a first time length negatively correlated with the purification rate is determined, and the subsequent steps are repeatedly executed until the third time length ends, and the purification rate of the first room is re-obtained.

4. The control method according to any one of claims 1 to 3, characterized by, The preset cold / heat provided to the second room comprises the following steps: The temperature difference between the indoor temperature of the second room and the set temperature is used to control the opening degree of the air outlet valve, the opening degree of the air return valve, the rotation speed of the air conditioner indoor fan, and the frequency of the air conditioner compressor of the second room; or, the rotation speed of the air conditioner indoor fan is adjusted to the highest rotation speed, the frequency of the air conditioner compressor is adjusted to the highest frequency, and the opening degree of the air outlet valve of the second room is set to the maximum air valve opening degree; The opening degree of the air outlet valve of the second room is greater than or equal to the opening degree of the air return valve.

5. The control method according to any one of claims 1 to 3, characterized by, Providing preset cooling / heating to the second room, comprising: Obtaining an expected pressure drop value of the second room within a first time length; Real-time detecting an actual pressure rise value of the second room; Controlling an opening difference between the air outlet valve and the air return valve of the second room according to a pressure difference between the actual pressure rise value and the expected pressure drop value; wherein the pressure difference is positively correlated with the opening difference.

6. The control method according to any one of claims 1 to 3, characterized by, Providing fresh air to the first room, comprising: In the case of providing fresh air through the fresh air device, controlling the air conditioner indoor fan speed and the air conditioner compressor frequency according to the fresh air amount, the fresh air temperature provided by the fresh air device, the temperature difference between the indoor temperature and the set temperature of the first room; In the case of providing fresh air through the purification device, controlling the air conditioner indoor fan speed and the air conditioner compressor frequency according to the fresh air amount provided by the fresh air device, the temperature difference between the indoor temperature and the set temperature of the first room.

7. A control device for purifying air in a plurality of rooms in a zone, characterized by Multiple rooms are provided with cooling / heating by an air conditioner; multiple rooms are purified by a fresh air device / purification device; the air conditioner and the fresh air device / purification device supply air to each room through the air supply pipeline and absorb air from each room through the air return pipeline; a single room is provided with an air outlet and an air return; the air outlet is provided with an air outlet valve, and the air return is provided with an air return valve; the control device comprises: A first obtaining module for entering a purification mode and obtaining a first time length positively correlated with the pollution rate of the first room; A determining module for determining a second time length according to the first time length and an expected pressure drop rate; wherein the expected pressure drop rate is used to represent the pressure drop rate of the second room after the air outlet valve and the air return valve are closed; A first control module for providing preset cooling / heating to the second room within the second time length to store cold / heat in the second room, and the actual pressure rise value of the second room at the end of the second time length is greater than or equal to the expected pressure drop value of the second room within the first time length; A second control module for shortening the first time length to obtain a third time length according to the matching degree between the cold / heat storage condition of the second room and the temperature demand of the second room at the end of the second time length, and providing fresh air to the first room within the third time length; wherein the worse the matching degree, the more the first time length is shortened. The first obtaining module comprises: A first judgment unit for simultaneously providing fresh air to each room in the case that the air pollution concentration in one or more rooms is greater than or equal to a first concentration threshold, and the air pollution concentration in all rooms is less than a second concentration threshold; A second judgment unit for taking the room with a pollution concentration greater than or equal to a second concentration threshold as a first room and taking the room with a pollution concentration less than a second concentration threshold as a second room in the case that the pollution concentration in one or more rooms is greater than or equal to a first concentration threshold, and obtaining a first time length positively correlated with the pollution rate of the first room; The first control module comprises: A first control unit for closing the air outlet valve and the air return valve of the first room and opening the air outlet valve and the air return valve of the second room; The second control module comprises: A fifth control unit for closing the air outlet valve and the air return valve of the second room and opening the air outlet valve and the air return valve of the first room.

8. A control device for multi-room zoned purification of air, comprising a processor and a memory having stored therein program instructions, the control device being characterized by: The processor is configured to execute the program instructions to perform the control method for multi-room zoned purification of air as claimed in any one of claims 1 to 6.

9. An intelligent air conditioner, characterized by, Comprising: An air conditioner body; The control device for multi-room zoned purification of air as claimed in claim 7 or 8 is installed in the air conditioner body.

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