Fresh air conditioner and control method

Abstract

The invention provides a fresh air conditioner and a control method. The fresh air conditioner comprises an indoor unit, a fresh air module, a temperature and humidity detection module and a control module. The temperature and humidity detection module is arranged on the outdoor side and used for obtaining outdoor environment parameters. The control module is arranged in the indoor unit, and the control module is connected with the temperature and humidity detection module and used for controlling the fresh air module to be started and stopped and controlling the fresh air module to operate according to the outdoor environment parameters; wherein the temperature and humidity detection module is controlled by the control module of the indoor unit to obtain the outdoor environment parameters. The fresh air mode can be started when the fresh air conditioner is in the closed state.

Description

Technical Field

[0001] The present invention relates to the technical field of fresh air air conditioners, and in particular to a fresh air air conditioner and a control method thereof. Background Art

[0002] Fresh air air conditioner is an air conditioner that combines traditional air conditioning functions with fresh air functions. It not only has the ability to adjust indoor temperature and humidity, but also can introduce fresh air from the outside, exhaust indoor polluted air, and improve indoor air quality. As air pollution worsens, fresh air air conditioners are becoming more and more popular among users.

[0003] The fresh air mode of the currently commonly used fresh air air conditioner mainly operates when the outdoor unit is in the started state, and when the outdoor unit is in the turned off state, the fresh air mode cannot be operated. Summary of the invention

[0004] The present invention provides a fresh air air conditioner and a control method, aiming to solve the problem that the current fresh air air conditioner cannot operate in a fresh air mode when an outdoor unit is in a closed state.

[0005] In a first aspect, the present invention provides a fresh air air conditioner, which includes an indoor unit, a fresh air module, a temperature and humidity detection module and a control module; the temperature and humidity detection module is arranged on the outdoor side, and is used to obtain outdoor environmental parameters; the control module is arranged in the indoor unit, and the control module is connected to the temperature and humidity detection module, and is used to control the start and stop of the fresh air module and to control the operation of the fresh air module according to the outdoor environmental parameters; wherein the temperature and humidity detection module is controlled by the control module of the indoor unit to obtain the outdoor environmental parameters.

[0006] Furthermore, the fresh air module includes a fresh air duct, and a sterilization module is provided in the fresh air duct.

[0007] Furthermore, the fresh air module also includes a heating module, and the heating module is arranged in the fresh air duct and is arranged toward the outlet of the fresh air duct.

[0008] Furthermore, the temperature and humidity detection module is provided at the outlet of the fresh air duct.

[0009] In a second aspect, the present invention provides a control method, wherein:

[0010] Controlled by a start-up instruction for starting a fresh air module of the fresh air air conditioner, the fresh air module is started and outdoor environmental parameters are obtained;

[0011] The operation of the fresh air module is controlled according to the outdoor environmental parameters.

[0012] The present invention discloses a fresh air air conditioner and a control method. The fresh air air conditioner comprises a fresh air module, a temperature and humidity detection module and a control module. The fresh air module is used to provide a fresh air function. The temperature and humidity detection module is arranged on the outdoor side of the fresh air air conditioner to obtain outdoor environmental parameters. The control module is used to control the start and shut down of the fresh air module. By arranging the temperature and humidity detection module on the outdoor side, the temperature and humidity detection module can obtain the outdoor environmental parameters even if the outdoor unit is in a closed state, so that the control module can independently control the start of the fresh air module, and adjust the operating parameters of the fresh air module during operation according to the outdoor environmental parameters, so as to ensure that the fresh air module can operate normally, thereby realizing that the fresh air mode can be independently turned on when the outdoor unit is in a closed state. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0014] Figure 1 is a block diagram of a fresh air air conditioner provided by an embodiment of the present invention;

[0015] Figure 2 This is a structural schematic diagram of a fresh air duct of a fresh air air conditioner provided by an embodiment of the present invention;

[0016] Figure 3 is a flow chart of a control method provided by an embodiment of the present invention;

[0017] Figure 4 is a first sub-flow chart of a control method provided by an embodiment of the present invention;

[0018] Figure 5 is a second sub-flow chart of a control method provided by an embodiment of the present invention;

[0019] Figure 6 is a third sub-flow chart of a control method provided by an embodiment of the present invention;

[0020] Description of the drawings: 10. Fresh air module; 11. Fresh air duct; 12. Sterilization module; 13. Heating module; 20. Temperature and humidity detection module; 30. Control module. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, operations, elements, components and / or groups thereof.

[0023] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, the singular forms of "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in the specification of the present invention and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0024] In addition, the directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only for reference to the directions of the attached drawings and the use status of the product. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In addition, in the drawings, structures with similar or identical structures are represented by the same reference numerals.

[0025] See also Figure 1 to Figure 2 , Figure 1 is a block diagram of a fresh air air conditioner provided by an embodiment of the present invention; Figure 2 1 is a schematic diagram of the structure of the fresh air duct 11 of the fresh air air conditioner provided in one embodiment of the present invention; Figure 1 As shown, the fresh air air conditioner includes a fresh air module 10, a temperature and humidity detection module 20 and a control module 30; the temperature and humidity detection module 20 is arranged on the outdoor side, and is used to obtain outdoor environmental parameters; the control module 30 is arranged in the indoor unit, and the control module 30 is connected to the temperature and humidity detection module 20, and is used to control the start and stop of the fresh air module 10 and to control the operation of the fresh air module 10 according to the outdoor environmental parameters; wherein, the temperature and humidity detection module 20 is controlled by the control module 30 of the indoor unit to obtain the outdoor environmental parameters.

[0026] Specifically, the fresh air air conditioner has both the functions of a traditional air conditioner and a fresh air function. The functions of a traditional air conditioner generally include a heating function and a cooling function, while the fresh air air conditioner adds a fresh air function on the basis of the heating function and the cooling function.

[0027] When a traditional fresh air air conditioner needs to use the fresh air function, it is necessary to first control the fresh air air conditioner to be in operation, that is, both the indoor unit and the outdoor unit of the fresh air air conditioner are in working state, and the fresh air function can be started only when the fresh air air conditioner is in operation. In actual use, there are situations where users do not need either the cooling function or the heating function. In this case, if the user needs to use the fresh air function, it is still necessary to control the outdoor unit to be in operation. In addition, when obtaining outdoor environmental parameters, the traditional fresh air air conditioner needs to collect them through the outdoor controller, that is, the traditional fresh air air conditioner needs to start the outdoor controller and the indoor controller at the same time at the minimum, which leads to an increase in power consumption when the fresh air air conditioner is only running in the fresh air mode.

[0028] The fresh air air conditioner provided by the present invention may include an indoor unit, a fresh air module 10, a temperature and humidity detection module 20 and a control module 30. The fresh air module 10 is used to provide a fresh air function for the fresh air air conditioner. The fresh air module 10 may include a fresh air motor, a fresh air fan, and pipelines and other structures commonly used in the field. Its specific structure is not limited here.

[0029] The temperature and humidity detection module 20 is arranged on the outdoor side. For example, the temperature and humidity detection module 20 can be arranged in the outdoor unit of the fresh air air conditioner and is independent of the circuit of the outdoor unit. That is, the temperature and humidity detection module 20 is an independent module, which can be operated when the outdoor unit is turned off. At the same time, the temperature and humidity detection module 20 is electrically connected to the control module 30, and the acquired outdoor environmental parameters can be sent to the control module 30, so that the control module 30 can control the fresh air module 10.

[0030] The control module 30 may be a controller of an indoor unit, that is, the control module 30 may be an indoor controller. The control module 30 is connected to the temperature and humidity detection module 20, and may obtain outdoor environmental parameters detected by the temperature and humidity detection module 20. The control module 30 may start or shut down the fresh air module 10 according to a control instruction, and the control instruction may be issued by a user through a remote controller. For example, a button for adjusting the operation mode of the fresh air air conditioner may be provided on the remote controller, and the user sends a corresponding mode switching instruction through the button. When the user switches the operation mode of the fresh air air conditioner to the fresh air mode through the remote controller, that is, starts the fresh air mode, the control module 30 controls the fresh air module 10 to start, and when the user sends an instruction to shut down the fresh air module 10 through the remote controller, the control module 30 shuts down the fresh air module 10.

[0031] After the fresh air module 10 is started, the control module 30 can adjust the operating parameters of the fresh air module 10 during operation according to the outdoor environmental parameters. For example, when the outdoor temperature is lower than the indoor temperature, the outdoor air is heated after entering the fresh air air conditioner, and then the heated outdoor air is transported to the indoor room. Or when the outdoor humidity is high, the outdoor air can be dehumidified and then the dehumidified outdoor air is transported to the indoor room.

[0032] In addition, in addition to controlling the start and stop of the fresh air module 10 according to the user's control instructions, the control module 30 may also preset a fresh air algorithm in the control module 30, which is used to automatically start or stop the fresh air module 10 according to indoor and outdoor environmental parameters. For example, the control module 30 can obtain the indoor air quality, and when the indoor air quality is poor, control the fresh air module 10 to start, so as to exchange the indoor and outdoor air to improve the indoor air quality.

[0033] In actual use, when the outdoor unit is in the off state, the user can send a control command to the control module 30 through the remote control, and the control module 30 directly starts the fresh air module 10 according to the control command. At this time, the fresh air module 10, the temperature and humidity detection module 20 and the control module 30 of the fresh air air conditioner are in the working state, and the compressor and the outdoor controller of the outdoor unit are in the off state, which can reduce the power consumption of the fresh air air conditioner in the fresh air mode. When the fresh air air conditioner is operating normally, the indoor unit and the outdoor unit of the fresh air air conditioner start to operate according to the automatic control logic. At this time, the fresh air module 10 can be in the off state or in the on state, which can be controlled by the user.

[0034] See also Figure 2 As a further embodiment, the fresh air module 10 includes a fresh air duct 11, and a sterilization module 12 is provided in the fresh air duct 11. Further, the fresh air module 10 also includes a heating module 13, and the heating module 13 is provided in the fresh air duct 11 and is arranged toward the outlet of the fresh air duct 11. Further, the temperature and humidity detection module 20 is provided at the outlet of the fresh air duct 11.

[0035] The fresh air module 10 may include a fresh air duct 11, a sterilization module 12 and a heating module 13. A temperature and humidity detection module 20 may be provided at the outlet of the fresh air duct 11. The temperature and humidity detection module 20 is used to obtain outdoor environmental parameters. A sterilization module 12 and a heating module 13 may be provided in the fresh air duct 11. Figure 2As shown, the sterilization module 12 can be arranged on the upper wall of the fresh air duct 11 near the inner side, and is used to sterilize the air in the fresh air duct 11. The sterilization module 12 can be a sterilization lamp, for example, a UV sterilization lamp. The heating module 13 is also arranged on the inner side of the fresh air duct 11, and is used to heat the air in the fresh air duct 11 to increase the temperature of the outdoor air and avoid a large temperature difference between the outdoor air and the indoor air.

[0036] See also Figure 3 The present invention provides a control method, which can be applied to a fresh air air conditioner to control the operation of a fresh air module. The control method includes S110-S120.

[0037] S110, controlled by a start-up instruction for starting a fresh air module of the fresh air air conditioner, starting the fresh air module and acquiring outdoor environmental parameters.

[0038] In an embodiment of the present invention, the fresh air air conditioner has both the functions of a traditional air conditioner and a fresh air function. The functions of a traditional air conditioner generally include a heating function and a cooling function, while the fresh air air conditioner adds a fresh air function on the basis of the heating function and the cooling function.

[0039] When a traditional fresh air air conditioner needs to use the fresh air function, it is necessary to first control the fresh air air conditioner to be in operation, that is, both the indoor unit and the outdoor unit of the fresh air air conditioner are in working state, and the fresh air function can be started only when the fresh air air conditioner is in operation. In actual use, there are situations where users do not need either the cooling function or the heating function. In this case, if the user needs to use the fresh air function, it is still necessary to control the outdoor unit to be in operation. In addition, when obtaining outdoor environmental parameters, the traditional fresh air air conditioner needs to collect them through the outdoor controller, that is, the traditional fresh air air conditioner needs to start the outdoor controller and the indoor controller at the same time at the minimum, which leads to an increase in power consumption when the fresh air air conditioner is only running in the fresh air mode.

[0040] The fresh air air conditioner provided by the present invention may include a fresh air module, a temperature and humidity detection module and a control module. The fresh air module is used to provide a fresh air function for the fresh air air conditioner. The fresh air module may include a fresh air motor, a fresh air fan and pipelines and other structures commonly used in the field. Its specific structure is not limited here.

[0041] The temperature and humidity detection module is arranged on the outdoor side. For example, the temperature and humidity detection module can be arranged in the outdoor unit of the fresh air air conditioner and is independent of the circuit of the outdoor unit. That is, the temperature and humidity detection module is an independent module and can be operated when the outdoor unit is turned off. At the same time, the temperature and humidity detection module is electrically connected to the control module and can send the acquired outdoor environmental parameters to the control module, so that the control module can control the fresh air module.

[0042] The control module can be a controller of the indoor unit, that is, the control module can be an indoor controller. The control module is connected to the temperature and humidity detection module and can obtain the outdoor environmental parameters detected by the temperature and humidity detection module. The control module can start or shut down the fresh air module according to the control instruction. The control instruction can be issued by the user through the remote control. For example, the remote control can be provided with a button for adjusting the operating mode of the fresh air air conditioner. The user sends the corresponding mode switching instruction through the button. When the user switches the operating mode of the fresh air air conditioner to the fresh air mode through the remote control, that is, starts the fresh air mode, the control module controls the fresh air module to start. When the user sends an instruction to shut down the fresh air module through the remote control, the control module shuts down the fresh air module.

[0043] S120, controlling the operation of the fresh air module according to the outdoor environmental parameters.

[0044] In an embodiment of the present invention, after obtaining the outdoor environmental parameters, the operation of the fresh air module can be controlled according to the outdoor environmental parameters. For example, when the outdoor temperature is much higher than the indoor temperature, the temperature of the outdoor air can be lowered first, so that the temperature of the outdoor air is close to the temperature of the indoor air, and then the outdoor air is sent indoors. When the outdoor temperature is much lower than the indoor temperature, the temperature of the outdoor air can be heated first, so that the temperature of the outdoor air is close to the temperature of the indoor air, and then the outdoor air is sent indoors. In addition, the fresh air module can also be turned off according to the outdoor temperature and outdoor humidity. For example, when the outdoor temperature is lower than the preset temperature threshold, the fresh air module can be turned off. When the outdoor humidity is higher than the indoor humidity and its humidity exceeds the preset humidity threshold, the fresh air module can also be turned off to avoid condensation.

[0045] See also Figure 4 In some embodiments, such as in the present embodiment, the control method may include step S110a.

[0046] S110a, acquiring the operating status of the compressor of the fresh air air conditioner, and confirming the fresh air mode of the fresh air module according to the operating status of the compressor.

[0047] In the embodiment of the present invention, the fresh air mode may include multiple ones, which are mainly distinguished according to the operating state of the compressor. The operating state of the compressor may include a start state and a shutdown state. The start state means that the compressor is in the running state and participates in the refrigerant cycle of the air conditioner, and the shutdown state means that the compressor is in the shutdown state and does not participate in the refrigerant cycle of the air conditioner. After starting the fresh air module, the operating mode of the fresh air module is confirmed according to the operating state of the compressor.

[0048] See also Figure 5 In some embodiments, such as in the present embodiment, the control method may include steps S110a1-S110a5.

[0049] S110a1, confirming the operating status of the compressor;

[0050] S110a2, if the compressor is in an off state, switching the fresh air mode of the fresh air module to a first preset mode;

[0051] S110a3, if the compressor is in the start-up state, obtaining the outdoor air quality;

[0052] S110a4, if the outdoor air quality is greater than or equal to a preset air quality threshold, switching the fresh air mode of the fresh air module to a second preset mode;

[0053] S110a5: If the outdoor air quality is less than the preset air quality threshold, the fresh air mode of the fresh air module is switched to a third preset mode.

[0054] In the embodiment of the present invention, the operating state of the compressor may include a start state and a shutdown state. When the compressor is in the shutdown state, the fresh air mode is the first preset mode, and when the compressor is in the start state, the fresh air mode is the second preset mode or the third preset mode, which is determined by the indoor air quality or specified by the user.

[0055] The first preset mode is that the compressor is in the off state. In this mode, the fresh air damper of the fresh air module is gradually opened, and the control module obtains outdoor environmental parameters and indoor environmental parameters at the same time. When the fresh air damper is opened to the predetermined position, the internal fan of the fresh air air conditioner starts and is in the air supply mode. When the internal fan starts, its wind speed gradually increases to the target speed. When the internal fan reaches the target speed, the fresh air fan runs at a low speed. During the operation stage of the above-mentioned fresh air module, the control module controls the operation of the fresh air module in real time according to the outdoor environmental parameters and indoor environmental parameters.

[0056] The second preset mode and the third preset mode are modes when the compressor is in the started state, that is, when the compressor is in the started state, the indoor air quality is obtained, and based on the indoor air quality, it is determined whether to switch the operation mode of the fresh air module to the second preset mode or the third preset mode.

[0057] The second preset mode is the normal mode. In this mode, the fresh air module starts normally, the fresh air damper of the fresh air module is fully opened, the control module obtains indoor environmental parameters and outdoor environmental parameters at the same time, and the indoor fan of the fresh air air conditioner and the fresh air fan of the fresh air module are turned on at the same time, and the operating gear of the indoor fan corresponds one by one to the gear of the fresh air fan. For example, the indoor fan is provided with three gears, namely, the first gear, the second gear and the third gear, and the fresh air fan is provided with three gears, namely, the A gear, the second gear corresponds to the B gear, and the third gear corresponds to the C gear. When the indoor fan is in the first gear, the fresh air fan is in the A gear.

[0058] The third preset mode is the high-quality mode. In this mode, in addition to the contents of the second preset mode, the sterilization mode and the heating mode are also activated. That is, when the outdoor air enters the fresh air module, it is sterilized and heated by the fresh air module before entering the room.

[0059] When the outdoor air quality is greater than or equal to the preset air quality threshold, it indicates that the outdoor air quality is high, and you can enter the second preset mode. When the outdoor air quality is less than the preset air quality threshold, it indicates that the outdoor air quality is poor, and you can enter the third preset mode.

[0060] In addition, in addition to confirming whether to enter the second preset mode or the third preset mode according to the outdoor air quality, the user can also manually select the preset mode to enter through the remote control.

[0061] See also Figure 6 In some embodiments, such as in the present embodiment, the control method may include steps S130-S140.

[0062] S130, if it is detected that the fresh air module meets the preset closing condition, closing the fresh air module;

[0063] S140: If it is detected that the fresh air module is in a closed state, the fresh air air conditioner is controlled to enter a sterilization mode.

[0064] In the embodiment of the present invention, the preset shutdown condition may include receiving a shutdown command from a remote controller or a smart device, the outdoor temperature being lower than a preset temperature threshold for a long time, the indoor humidity being greater than a preset humidity threshold for a long time, the indoor and outdoor temperature difference being greater than a preset temperature difference, and the operation time of the fresh air module exceeding a predetermined time. When any of the above conditions is met, the fresh air module may be shut down and enter the sterilization mode, and the heating mode may be entered while entering the sterilization mode.

[0065] For example, the preset temperature threshold can be -15°C. When the outdoor temperature is lower than -15°C for 5 consecutive minutes, the fresh air module is turned off. The preset humidity threshold can be 85%. When the indoor humidity is greater than 85% for 3 consecutive minutes, the fresh air module is turned off. The preset temperature difference can be 15°C. When the outdoor temperature is lower than -10°C for 5 consecutive minutes and the temperature difference between the indoor temperature and the outdoor temperature is greater than 15°C, the fresh air module is turned off. The preset time can be 40 minutes. When the running time of the fresh air module is greater than 40 minutes, the fresh air module is turned off. By presetting the shutdown conditions, condensation can be prevented.

[0066] In sterilization mode, the fresh air motor continues to reverse at a low speed for 5 minutes or the humidity value detected by the temperature and humidity module is greater than 80%, and then the fresh air motor stops rotating.

[0067] The present invention discloses a fresh air air conditioner and a control method, wherein a fresh air module is used to provide a fresh air function, a temperature and humidity detection module is arranged on the outdoor side of the fresh air air conditioner to obtain outdoor environmental parameters, and a control module is used to control the start and shut down of the fresh air module. By arranging the temperature and humidity detection module on the outdoor side, even if the outdoor unit is in a closed state, the temperature and humidity detection module can obtain the outdoor environmental parameters, so that the control module can independently control the start-up of the fresh air module, and adjust the operating parameters of the fresh air module during operation according to the outdoor environmental parameters, so as to ensure that the fresh air module can operate normally, thereby realizing that the fresh air mode can be independently turned on even when the outdoor unit is in a closed state.

[0068] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A fresh air air conditioner, characterized in that: include: Indoor unit; Fresh air module; A temperature and humidity detection module, which is arranged outdoors and used to obtain outdoor environmental parameters; A control module is disposed in the indoor unit, the control module is connected to the temperature and humidity detection module, and is used to control the start and stop of the fresh air module and to control the operation of the fresh air module according to the outdoor environmental parameters; Wherein, the temperature and humidity detection module is controlled by the control module of the indoor unit to obtain the outdoor environmental parameters.

2. The fresh air air conditioner according to claim 1, characterized in that: The fresh air module comprises a fresh air duct, and a sterilization module is arranged in the fresh air duct.

3. The fresh air air conditioner according to claim 2, characterized in that: The fresh air module also includes a heating module, and the heating module is arranged in the fresh air duct and is arranged toward the outlet of the fresh air duct.

4. The fresh air air conditioner according to claim 2, characterized in that: The temperature and humidity detection module is provided at the outlet of the fresh air duct.

5. A control method, characterized in that: Used to control the fresh air air conditioner according to any one of claims 1 to 4, the method comprising: Controlled by a start-up instruction for starting a fresh air module of the fresh air air conditioner, the fresh air module is started and outdoor environmental parameters are obtained; The operation of the fresh air module is controlled according to the outdoor environmental parameters.

6. The method according to claim 5, characterized in that Before the step of controlling the operation of the fresh air module according to the outdoor environmental parameters, the method further includes: The operating state of the compressor of the fresh air air conditioner is obtained, and the fresh air mode of the fresh air module is confirmed according to the operating state of the compressor.

7. The method according to claim 6, characterized in that The step of confirming the fresh air mode of the fresh air module according to the operating state of the compressor includes: confirming the operating status of the compressor; If the compressor is in an off state, the fresh air mode of the fresh air module is switched to a first preset mode.

8. The method according to claim 7, characterized in that The step of confirming the fresh air mode of the fresh air module according to the operating state of the compressor also includes: If the compressor is in the started state, obtaining the outdoor air quality; If the outdoor air quality is greater than or equal to a preset air quality threshold, the fresh air mode of the fresh air module is switched to a second preset mode.

9. The method according to claim 8, characterized in that After the step of obtaining the indoor air quality, the method further includes: If the outdoor air quality is less than the preset air quality threshold, the fresh air mode of the fresh air module is switched to a third preset mode.

10. The method according to claim 5, characterized in that The method further comprises: If it is detected that the fresh air module meets the preset closing condition, the fresh air module is closed; If it is detected that the fresh air module is in a closed state, the fresh air air conditioner is controlled to enter a sterilization mode.

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