Air conditioner and air purification method of air conditioner

Abstract

The application discloses an air conditioner and an air purification method of the air conditioner. The air conditioner comprises a refrigerating system, a fresh air module and an air purification module, and further comprises an odor sensor for detecting an air quality odor index in a room. The air quality odor index currently detected by the odor sensor is regularly acquired. An odor index rising rate is calculated according to the current air quality odor index and the air quality odor index acquired last time. The operation state of the fresh air module, the air purification module and / or the refrigerating system is controlled according to the odor index rising rate and the current air quality odor index. By using the application, the odor condition in the room can be automatically detected, the opening and closing of the fresh air and air purification functions and / or the operation state of the refrigerating system can be intelligently controlled, the odor in the room can be effectively eliminated, and the comfort experience of a user is improved.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more particularly to an air conditioner and an air purification method for the air conditioner. Background Technology

[0002] Air conditioners have become an indispensable household appliance in people's daily lives, offering multiple functions such as cooling, heating, and dehumidification. However, when using an air conditioner, doors and windows are often closed, leading to poor ventilation over time. This can cause various unpleasant odors indoors, making people feel stuffy or dizzy. Furthermore, the limited air circulation creates a humid environment that may breed bacteria, posing a threat to human health.

[0003] In existing technologies, air purification is achieved by setting up a fresh air conditioning control scheme. However, conventional fresh air functions require user input to operate. For example, the user inputs a fresh air start command and selects the fresh air speed to start the function. Subsequently, the user needs to input a fresh air stop command again. This results in the user not being able to turn on the fresh air function in a timely manner, thus failing to achieve a good air purification effect, or the user not being able to turn off the fresh air function in a timely manner, causing energy waste. Summary of the Invention

[0004] The purpose of this invention is to provide an air conditioner and an air purification method for the air conditioner, which can automatically detect indoor odors, intelligently control the opening and closing of fresh air and air purification functions and / or the operating status of the refrigeration system, effectively eliminate indoor odors, and improve the user's comfort experience.

[0005] To achieve the above objectives, embodiments of the present invention provide an air conditioner, comprising:

[0006] A refrigeration system is used to perform either cooling or heating functions.

[0007] Fresh air module, used to replace indoor and outdoor air;

[0008] Air purification module, used to purify indoor air;

[0009] Odor sensor, used to detect the odor index of indoor air quality;

[0010] The controller is configured as follows:

[0011] The air quality odor index currently detected by the odor sensor is periodically obtained;

[0012] Calculate the rate of increase of the odor index based on the current air quality odor index and the previously obtained air quality odor index;

[0013] The operating status of the fresh air module, the air purification module, and / or the refrigeration system is controlled based on the rate of increase of the odor index and the current air quality odor index.

[0014] As an improvement to the above solution, the step of controlling the operating status of the fresh air module, the air purification module, and / or the refrigeration system based on the rate of increase of the odor index and the current air quality odor index includes:

[0015] When the rate of increase of the odor index is greater than the first rate threshold and less than or equal to the second rate threshold, and the current air quality odor index is greater than the first index threshold and less than or equal to the second index threshold, the air conditioner is controlled to enter the first operating mode until the current air quality odor index is less than or equal to the standard index threshold, at which point the first operating mode is exited.

[0016] In the first operating mode, the fresh air module is activated and operates at a first air volume; the standard index threshold is less than the first index threshold, the first index threshold is less than the second index threshold, and the first rate threshold is less than the second rate threshold.

[0017] As an improvement to the above solution, the step of controlling the operating status of the fresh air module, the air purification module, and / or the refrigeration system based on the rate of increase of the odor index and the current air quality odor index further includes:

[0018] When the rate of increase of the odor index is greater than the first rate threshold and less than or equal to the second rate threshold, and the current air quality odor index is greater than the second index threshold, the air conditioner is controlled to enter the second operating mode until the current air quality odor index is less than or equal to the first index threshold, then the air conditioner exits the second operating mode and enters the first operating mode.

[0019] In the second operating mode, the fresh air module is activated and operates at the second air volume, the air purification module is activated and operates, and the set temperature of the refrigeration system is reduced according to the current operating mode of the refrigeration system; the second air volume is greater than the first air volume.

[0020] As an improvement to the above solution, in the second operating mode, lowering the set temperature corresponding to the refrigeration system according to the current operating mode of the refrigeration system includes:

[0021] When the current working mode of the refrigeration system is refrigeration mode, the original set temperature of the refrigeration system is reduced by a first temperature adjustment step to adjust to the first target set temperature.

[0022] After running for a first running time at the first target set temperature, the first target set temperature is increased by the first temperature adjustment step to adjust to the original set temperature;

[0023] When the current working mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by the second temperature adjustment step to adjust to the second target set temperature.

[0024] After running for a second duration at the second target set temperature, the second target set temperature is increased by the second temperature adjustment step to adjust to the original set temperature;

[0025] Wherein, the second temperature adjustment step size is smaller than the first temperature adjustment step size.

[0026] As an improvement to the above solution, when the current operating mode of the refrigeration system is refrigeration mode, the original set temperature corresponding to the refrigeration system is reduced by a first temperature adjustment step to adjust it to the first target set temperature, including:

[0027] When the current working mode of the refrigeration system is refrigeration mode, the original set temperature of the refrigeration system is reduced by a first sub-step every first adjustment time until the first target set temperature is reached.

[0028] After running at the first target set temperature for a first running time, the first target set temperature is increased by the first temperature adjustment step to adjust to the original set temperature, including:

[0029] After running at the first target set temperature for a first running time, the first target set temperature is increased by the first sub-step every first adjustment time until the original set temperature is reached.

[0030] When the current operating mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by a second temperature adjustment step to adjust it to the second target set temperature, including:

[0031] When the current working mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by a second sub-step every second adjustment period until the second target set temperature is reached.

[0032] After running at the second target set temperature for a second running time, increasing the second target set temperature by the second temperature adjustment step to adjust it back to the original set temperature includes:

[0033] After running for a second duration at the second target set temperature, the second target set temperature is increased by the second sub-step every second adjustment duration until the original set temperature is reached.

[0034] As an improvement to the above solution, the step of controlling the operating status of the fresh air module, the air purification module, and / or the refrigeration system based on the rate of increase of the odor index and the current air quality odor index further includes:

[0035] When the rate of increase of the odor index is greater than the second rate threshold, and the current air quality odor index is greater than the first index threshold but less than or equal to the second index threshold, the air conditioner is controlled to enter the second operating mode until the current air quality odor index is less than or equal to the first index threshold, at which point it exits the second operating mode and enters the first operating mode.

[0036] As an improvement to the above solution, the step of controlling the operating status of the fresh air module, the air purification module, and / or the refrigeration system based on the rate of increase of the odor index and the current air quality odor index further includes:

[0037] When the rate of increase of the odor index is greater than the second rate threshold, and the current air quality odor index is greater than the second index threshold, the air conditioner is controlled to enter the third operating mode until the current air quality odor index is greater than the first index threshold and less than or equal to the second index threshold, then the third operating mode is exited and the second operating mode is entered.

[0038] In the third operating mode, the fresh air module is activated and operates at a third air volume, the air purification module is activated and operates, and the set temperature of the refrigeration system is reduced according to the current operating mode of the refrigeration system; the third air volume is greater than the second air volume.

[0039] As an improvement to the above solution, in the third operating mode, lowering the set temperature corresponding to the refrigeration system according to the current operating mode of the refrigeration system includes:

[0040] When the current working mode of the refrigeration system is refrigeration mode, the original set temperature of the refrigeration system is reduced by the third temperature adjustment step to the third target set temperature.

[0041] After running for a third running time at the third target set temperature, the third target set temperature is increased by the third temperature adjustment step to adjust to the original set temperature;

[0042] When the current working mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by the fourth temperature adjustment step to the fourth target set temperature.

[0043] After running for a fourth running time at the fourth target set temperature, the fourth target set temperature is increased by the fourth temperature adjustment step to adjust to the original set temperature;

[0044] The fourth temperature adjustment step size is smaller than the third temperature adjustment step size.

[0045] As an improvement to the above solution, when the current operating mode of the refrigeration system is refrigeration mode, the original set temperature corresponding to the refrigeration system is reduced by a third temperature adjustment step to adjust it to the third target set temperature, including:

[0046] When the current working mode of the refrigeration system is refrigeration mode, the original set temperature of the refrigeration system is reduced by a third sub-step every third adjustment time until the third target set temperature is reached.

[0047] After running at the third target set temperature for a third running time, the third target set temperature is increased by the third temperature adjustment step to adjust to the original set temperature, including:

[0048] After running for a third running time at the third target set temperature, the third target set temperature is increased by the third sub-step every third adjustment time until the original set temperature is reached.

[0049] When the current operating mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by a fourth temperature adjustment step to adjust it to the fourth target set temperature, including:

[0050] When the current working mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by a fourth sub-step every fourth adjustment period until the fourth target set temperature is reached.

[0051] After running for a fourth running time at the fourth target set temperature, the fourth target set temperature is increased by the fourth temperature adjustment step to adjust to the original set temperature, including:

[0052] After running for a fourth running time at the fourth target set temperature, the fourth target set temperature is increased by the fourth sub-step every fourth adjustment time until the original set temperature is reached.

[0053] This invention also provides an air purification method for an air conditioner, the air conditioner comprising:

[0054] A refrigeration system is used to perform either cooling or heating functions.

[0055] Fresh air module, used to replace indoor and outdoor air;

[0056] Air purification module, used to purify indoor air;

[0057] Odor sensor, used to detect the odor index of indoor air quality;

[0058] The method includes:

[0059] The air quality odor index currently detected by the odor sensor is periodically obtained;

[0060] Calculate the rate of increase of the odor index based on the current air quality odor index and the previously obtained air quality odor index;

[0061] The operating status of the fresh air module, the air purification module, and / or the refrigeration system is controlled based on the rate of increase of the odor index and the current air quality odor index.

[0062] Compared with existing technologies, the air conditioner and air purification method disclosed in this invention use an odor sensor to detect the indoor air quality odor index, and intelligently control the operation of the air conditioner's fresh air module, air purification module and / or refrigeration system based on the relationship between the current air quality odor index and the rate of increase of the odor index. This enables timely purification of indoor air, effectively eliminates indoor odors, reduces energy consumption, ensures that the indoor environment is always comfortable and clean, and improves the user's comfort experience. Attached Figure Description

[0063] Figure 1 This is a schematic diagram of the structure of an air conditioner provided in an embodiment of the present invention;

[0064] Figure 2 This is a schematic diagram of the structure of a split-type air conditioner in an embodiment of the present invention;

[0065] Figure 3 This is a schematic diagram of the integrated air conditioner in an embodiment of the present invention;

[0066] Figure 4 This is a schematic diagram of the refrigeration system in an embodiment of the present invention;

[0067] Figure 5 This is a schematic diagram of the first working process of the controller in an embodiment of the present invention;

[0068] Figure 6 This is a schematic diagram of the second working process of the controller in an embodiment of the present invention;

[0069] Figure 7 This is a schematic diagram of the third working process of the controller in an embodiment of the present invention;

[0070] Figure 8 This is a schematic diagram of the fourth working process of the controller in an embodiment of the present invention;

[0071] Figure 9 This is a schematic diagram of the fifth working process of the controller in an embodiment of the present invention;

[0072] Figure 10 This is a schematic flowchart of an air purification method for an air conditioner provided in an embodiment of the present invention. Detailed Implementation

[0073] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0074] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0075] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0076] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0077] See Figure 1This is a schematic diagram of the structure of an air conditioner provided in an embodiment of the present invention. The embodiment provides an air conditioner 10 that can perform functions such as cooling, heating, and dehumidification. In an optional implementation, the air conditioner is a split-type air conditioner, see [link to other documentation]. Figure 2 This is a schematic diagram of a split-type air conditioner in an embodiment of the present invention. The split-type air conditioner includes an indoor unit 101 and an outdoor unit 102. The indoor unit includes air supply devices such as air outlets, and the outdoor unit includes a refrigeration system composed of components such as a compressor, evaporator, and condenser. The specific structure and working principle of the indoor and outdoor units of the split-type air conditioner can be referred to the prior art, and will not be repeated here. In another embodiment, the air conditioner is an integrated air conditioner, see [link to relevant documentation]. Figure 3 This is a structural schematic diagram of an integrated air conditioner in an embodiment of the present invention. The integrated air conditioner includes an indoor unit 103, which integrates a functional system consisting of an air outlet and other air supply devices, as well as a compressor. The specific structure and working principle of the integrated air conditioner can be referred to the prior art, and will not be repeated here.

[0078] Specifically, the air conditioner includes a refrigeration system 11, see [link to relevant documentation]. Figure 4 This is a schematic diagram of the structure of the refrigeration system in an embodiment of the present invention. The refrigeration system includes components such as a compressor 111, an outdoor heat exchanger 112, a throttling component 113, and an indoor heat exchanger 114. The refrigeration system realizes the transport of refrigerant in different directions, thereby entering a refrigeration mode or a heating mode to achieve the refrigeration function or the heating function.

[0079] The air conditioner also includes a fresh air module 12, which is used to quickly replace indoor air and filter incoming air to achieve air purification and filtration effects, thereby reducing harmful substances in the indoor air.

[0080] The air conditioner also includes an air purification module 13 for purifying indoor air. Optionally, the air purification module includes stainless steel mesh, activated carbon filter, and silver ion filter added to the air conditioner vent. It can only purify large particles that the filter can intercept, such as dust, hair, and dander. The air conditioner cannot remove formaldehyde, bacteria, benzene, TVOC, and other substances in the room.

[0081] The air conditioner also includes an odor sensor 14 for detecting the indoor air quality odor index. The higher the air quality odor index, the worse the air quality and the more severe the indoor odor.

[0082] The air conditioner also includes a controller 15, see [link to controller 15] Figure 5 This is a schematic diagram of the first working process of the controller in an embodiment of the present invention. The controller 15 is configured to execute steps S11 to S13:

[0083] S11. Periodically obtain the air quality odor index currently detected by the odor sensor;

[0084] S12. Calculate the rate of increase of the odor index based on the current air quality odor index and the air quality odor index obtained last time.

[0085] S13. Based on the rate of increase of the odor index and the current air quality odor index, control the operating status of the fresh air module, the air purification module, and / or the refrigeration system.

[0086] In this embodiment of the invention, after the air conditioner is started and running, the current air quality odor index A(n) collected by the odor sensor 14 is acquired and recorded every time t. Based on the current air quality odor index A(n) and the previously acquired air quality odor index A(n-1), the odor index rise rate is calculated as follows:

[0087]

[0088] The air quality odor index A is used to characterize the current odor concentration, and the odor index rise rate B is used to characterize the rate at which the current odor concentration rises. The controller 15 controls the operating status of the fresh air module 12, the air purification module 13, and / or the refrigeration system 11 by combining the relationship between the current air quality odor index A(n) and the odor index rise rate B. This includes, but is not limited to, turning on and off, as well as adjusting the operating parameters when the system is on.

[0089] By employing the technical means of this invention, an odor sensor is used to detect the indoor air quality odor index. Based on the relationship between the current air quality odor index and the rate of increase of the odor index, the operating status of the air conditioner's fresh air module, air purification module, and / or refrigeration system is intelligently controlled. This enables timely purification of indoor air, effectively eliminating indoor odors, reducing energy consumption, ensuring that the indoor environment is always in a comfortable and clean state, and improving the user's comfort experience.

[0090] As a preferred embodiment, the present invention further optimizes the operation status control process of the fresh air module 12, the air purification module 13 and / or the refrigeration system 11 based on the above embodiments.

[0091] See Figure 6 This is a schematic diagram of the second working process of the controller in this embodiment of the invention. Step S13, namely, controlling the operating status of the fresh air module, the air purification module, and / or the refrigeration system according to the rate of increase of the odor index and the current air quality odor index, includes:

[0092] S131. When the rising rate of the odor index is greater than the first rate threshold and less than or equal to the second rate threshold, and the current air quality odor index is greater than the first index threshold and less than or equal to the second index threshold, control the air conditioner to enter the first operation mode, and exit the first operation mode until the current air quality odor index is less than or equal to the standard index threshold;

[0093] S132. When the rising rate of the odor index is greater than the first rate threshold and less than or equal to the second rate threshold, and the current air quality odor index is greater than the second index threshold, control the air conditioner to enter the second operation mode, and exit the second operation mode and enter the first operation mode until the current air quality odor index is less than or equal to the first index threshold.

[0094] Wherein, in the first operation mode, the fresh air module is started and operates at a first air volume; the standard index threshold is less than the first index threshold, the first index threshold is less than the second index threshold, and the first rate threshold is less than the second rate threshold. In the second operation mode, the fresh air module is started and operates at a second air volume, the air purification module is started and operates, and the set temperature corresponding to the refrigeration system is reduced according to the current working mode of the refrigeration system; the second air volume is greater than the first air volume.

[0095] In the embodiment of the present invention, a first rate threshold K1 and a second rate threshold K2 are preset to characterize the magnitude of the rising rate B of the odor index, and a standard index threshold A0, a first index threshold A1 and a second index threshold A2 are preset to characterize the magnitude of the air quality odor index A. Wherein, 0 < K1 < K2, 0 < A0 < A1 < A2.

[0096] In addition, the fresh air module 12 is preset with multiple air volume gears, which are low air volume, medium air volume and high air volume respectively. Wherein, the air output volume of the fresh air module 12 in the low air volume gear is the first air volume W1, the air output volume of the fresh air module 12 in the medium air volume is the second air volume W2, and the air output volume of the fresh air module 12 in the high air volume is the third air volume W3, W1 < W2 < W3.

[0097] When K1 < B ≤ K2, and A1 < A(n) ≤ A2, then enter the preset first operation mode, that is, start the fresh air module 12 and operate at the low air volume gear until it is detected that A(n) ≤ A0, then close the fresh air module 12.

[0098] By adopting the technical means of the embodiments of the present invention, the rising rate of the air quality odor index A(n) satisfies K1 < B ≤ K2, indicating that the indoor environment is in the odor rising period, but the rising rate is not fast, and A1 < A(n) ≤ A2, indicating that the odor concentration in the room is not high. Therefore, only by turning on the low air volume mode of the fresh air module can the odor be removed and the comfort experience of users be improved. In this state, when the air quality odor index drops to A0, it means that the odor has been reduced to a low level. At this time, the fresh air mode can be turned off to avoid energy waste.

[0099] When K1 < B ≤ K2 and A(n) > A2, it enters the preset second operation mode, that is, the fresh air module 12 is turned on and operates at the medium air volume gear, and at the same time, the air purification module 13 is turned on, and the user-set temperature T corresponding to the refrigeration system 11 is reduced ,

[0100] ,

[0101] , ,

[0103] , ,

[0102] , specifically, it is reduced by a certain step length according to the current operation mode of the refrigeration system until it is detected that A(n) ≤ A1, then the second operation mode is exited and transferred to the first operation mode.

[0100] By adopting the technical means of the embodiments of the present invention, the rising rate of the air quality odor index A(n) satisfies K1 < B ≤ K2, indicating that the indoor environment is in the odor rising period, and the rising rate is maintained at a certain level. And A(n) > A2 indicates that the odor concentration in the room is relatively high, indicating that the indoor air quality is still deteriorating. Therefore, it is necessary to turn on the medium air volume mode of the fresh air module and at the same time turn on the air purification module to adsorb odor particles and sterilize to improve the efficiency of removing odor and the comfort experience of users. And, according to the relationship between odor and temperature, the higher the temperature, the higher the sensitivity of the human nose, and the more obvious the user's perception of odor. While turning on the fresh air in a short time, slightly reducing the indoor temperature can better improve the comfort of users. After that, when the air quality odor index drops to A1, it means that the odor has been significantly reduced. At this time, it can be adjusted to the first operation mode to remove odor and avoid energy waste.

[0101] As a preferred implementation manner, in the second operation mode, the reduction of the set temperature corresponding to the refrigeration system according to the current working mode of the refrigeration system includes:

[0102] When the current working mode of the refrigeration system is the refrigeration mode, the original set temperature corresponding to the refrigeration system is reduced by the first temperature adjustment step length and adjusted to the first target set temperature; after operating at the first target set temperature for the first operation duration, the first target set temperature is increased by the first temperature adjustment step length and adjusted to the original set temperature;

[0103] When the current operating mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by a second temperature adjustment step to adjust to the second target set temperature; after running at the second target set temperature for a second running time, the second target set temperature is increased by the second temperature adjustment step to adjust to the original set temperature; wherein, the second temperature adjustment step is smaller than the first temperature adjustment step.

[0104] In an embodiment of the present invention, see Figure 7 This is a schematic diagram of the third working process of the controller in this embodiment of the invention. In order not to affect the heating effect, the adjustment range of the user-set temperature in the heating mode should be smaller than that in the cooling mode. Therefore, the first temperature adjustment step is set to a, and the second temperature adjustment step is a-ΔT1; ΔT1>0. For example, a is set to 1~2℃, and ΔT1 is set to 0.5.

[0105] When the refrigeration system 11 is currently in refrigeration mode, adjust T s_c1 =T s_u -a, where T s_c1 Set the temperature T for the primary target. s_u The system returns the user-defined initial temperature. Furthermore, after the longest possible running time t1, such as 10 minutes, the temperature will be restored to the user-defined initial temperature to avoid affecting the cooling effect and user experience.

[0106] When the refrigeration system 11 is currently in heating mode, adjust T s_c2 =T s_u -a+0.5, where T s_c2 Set the temperature for the second target. And after the longest running time t2, for example 10 minutes, restore the set temperature to the original set temperature set by the user to avoid affecting the heating effect and the user experience.

[0107] As a preferred embodiment, when the current working mode of the refrigeration system is refrigeration mode, the step of reducing the original set temperature of the refrigeration system by a first temperature adjustment step to adjust it to the first target set temperature includes: when the current working mode of the refrigeration system is refrigeration mode, reducing the original set temperature of the refrigeration system by a first sub-step every first adjustment time until the first target set temperature is reached.

[0108] The step of running at the first target set temperature for a first running time and then increasing the first target set temperature by the first temperature adjustment step to adjust it to the original set temperature includes: after running at the first target set temperature for a first running time, increasing the first target set temperature by the first sub-step every first adjustment time until the original set temperature is reached.

[0109] When the current working mode of the refrigeration system is heating mode, the original set temperature corresponding to the refrigeration system is reduced by a second temperature adjustment step to adjust to the second target set temperature, which includes: when the current working mode of the refrigeration system is heating mode, the original set temperature corresponding to the refrigeration system is reduced by a second sub-step every second adjustment time until the second target set temperature is reached;

[0110] After running at the second target set temperature for a second running time, the second target set temperature is increased by the second temperature adjustment step to adjust to the original set temperature, which includes: after running at the second target set temperature for a second running time, the second target set temperature is increased by the second sub-step every second adjustment time until the original set temperature is reached.

[0111] In this embodiment of the invention, when lowering the set temperature corresponding to the refrigeration system 11, it is necessary to gradually decrease the temperature. Similarly, when restoring the set temperature, it is necessary to gradually increase the temperature. This is to avoid large instantaneous fluctuations in the set temperature, which could cause instantaneous fluctuations in the indoor temperature and affect the user experience. It also makes the air conditioning system more stable and reliable in operation.

[0112] For example, the first adjustment duration and the second adjustment duration are set to 10s, and the first sub-step size and the second sub-step size are set to 0.2℃.

[0113] When the refrigeration system 11 is in refrigeration mode, it lowers the current set temperature by 0.2°C every 10 seconds until the first target set temperature T is reached. s_c1 After running for a maximum of 10 minutes, the current set temperature is increased by 0.2°C every 10 seconds until the original set temperature T is reached. s_u .

[0114] When the cooling system 11 is currently in heating mode, the current set temperature is reduced by 0.2°C every 10 seconds until the second target set temperature T is reached. s_c2 After running for a maximum of 10 minutes, the current set temperature is increased by 0.2°C every 10 seconds until the original set temperature T is reached. s_u .

[0115] See Figure 8, which is the schematic diagram of the fourth working process of the controller in the embodiment of the present invention. Step S13, that is, controlling the operating states of the fresh air module, the air purification module, and / or the refrigeration system according to the rising rate of the odor index and the current air quality odor index, further includes:

[0116] S133. When the rising rate of the odor index is greater than the second rate threshold, and the current air quality odor index is greater than the first index threshold and less than or equal to the second index threshold, control the air conditioner to enter the second operating mode until the current air quality odor index is less than or equal to the first index threshold, then exit the second operating mode and enter the first operating mode.

[0117] S134. When the rising rate of the odor index is greater than the second rate threshold, and the current air quality odor index is greater than the second index threshold, control the air conditioner to enter the third operating mode until the current air quality odor index is greater than the first index threshold and less than or equal to the second index threshold, then exit the third operating mode and enter the second operating mode;

[0118] Wherein, in the third operating mode, the fresh air module starts and operates at a third air volume, the air purification module starts to operate, and reduces the set temperature corresponding to the refrigeration system according to the current working mode of the refrigeration system; the third air volume is greater than the second air volume.

[0119] Specifically, when B > K2 and A1 < A(n) ≤ A2, it indicates that the rising rate of the air quality odor index A(n) is very fast, indicating that the indoor air quality drops rapidly, and at the same time, the air quality odor index also maintains at a certain level. Then enter the preset second operating mode, that is, turn on the fresh air module 12 and operate at the medium air volume gear, at the same time turn on the air purification module 13, and at the same time reduce the user-set temperature T corresponding to the refrigeration system 11 s , and specifically reduce a certain step according to the current operating mode of the refrigeration system until it is detected that A(n) ≤ A1, then exit the second operating mode and switch to the first operating mode.

[0120] It should be noted that the working principle in the second operating mode can be referred to the above embodiments and will not be elaborated here.

[0121] When B > K2 and A(n) > A2, then enter the third operating mode, that is, turn on the fresh air module 12 and operate at the high air volume gear, at the same time turn on the air purification module 13, and at the same time reduce the user-set temperature T corresponding to the refrigeration system 11 s, specifically reduce a certain step length according to the current operating mode of the refrigeration system until it is detected that A1 < A(n) ≤ A2, then exit the third operating mode and switch to the second operating mode.

[0122] By adopting the technical means of the embodiment of the present invention, the rising rate of the air quality odor index A(n) satisfies B > K2, indicating that the indoor environment is in a period of rapid odor increase, and A(n) > A2, which means that the odor concentration indoors is relatively high. Therefore, it is necessary to turn on the high air volume mode of the fresh air module and at the same time turn on the air purification module to adsorb odor particles and sterilize, so as to improve the efficiency of odor removal and slightly reduce the indoor temperature to enhance the comfort experience of users. After that, when the air quality odor index drops to A2, it means that the odor has been reduced. At this time, it can be adjusted to the second operating mode for odor removal to improve indoor comfort and avoid energy waste.

[0123] As a preferred embodiment, in the third operating mode, reducing the set temperature corresponding to the refrigeration system according to the current working mode of the refrigeration system includes:

[0124] When the current working mode of the refrigeration system is the refrigeration mode, reduce the original set temperature corresponding to the refrigeration system by the third temperature adjustment step length to adjust to the third target set temperature; after operating for the third operating duration at the third target set temperature, increase the third target set temperature by the third temperature adjustment step length to adjust to the original set temperature;

[0125] When the current working mode of the refrigeration system is the heating mode, reduce the original set temperature corresponding to the refrigeration system by the fourth temperature adjustment step length to adjust to the fourth target set temperature; after operating for the fourth operating duration at the fourth target set temperature, increase the fourth target set temperature by the fourth temperature adjustment step length to adjust to the original set temperature; where the fourth temperature adjustment step length is less than the third temperature adjustment step length.

[0126] In the embodiment of the present invention, refer to Figure 9 , which is the schematic diagram of the fifth working process of the controller in the embodiment of the present invention. Set the third temperature adjustment step length as b, and the fourth temperature adjustment step length as b - △T2; b ≥ a, and △T2 > 0. For example, set b as 1 - 2 °C and △T2 as 0.5.

[0127] When the refrigeration system 11 is currently in the refrigeration mode, adjust T s_c3 = T s_u -b, where T s_c3 is the third target set temperature, and T s_uThe system returns the user-defined initial temperature. Furthermore, after the longest possible running time t3, such as 10 minutes, the temperature will be restored to the user-defined initial temperature to avoid affecting the cooling effect and user experience.

[0128] When the refrigeration system 11 is currently in heating mode, adjust T s_c4 =T s_u -b+0.5, where T s_c4 Set the temperature for the fourth target. And after the longest running time t4, for example 10 minutes, restore the set temperature to the original set temperature set by the user to avoid affecting the heating effect and the user experience.

[0129] As a preferred embodiment, when the current working mode of the refrigeration system is refrigeration mode, the step of reducing the original set temperature of the refrigeration system by a third temperature adjustment step to adjust it to the third target set temperature includes: when the current working mode of the refrigeration system is refrigeration mode, reducing the original set temperature of the refrigeration system by a third sub-step every third adjustment time until the third target set temperature is reached.

[0130] After running at the third target set temperature for a third running time, the third target set temperature is increased by the third temperature adjustment step to adjust to the original set temperature, which includes: after running at the third target set temperature for a third running time, the third target set temperature is increased by the third sub-step every third adjustment time until the original set temperature is reached.

[0131] The step of reducing the original set temperature of the refrigeration system by a fourth temperature adjustment step to the fourth target set temperature when the current working mode of the refrigeration system is heating mode includes: reducing the original set temperature of the refrigeration system by a fourth sub-step every fourth adjustment time until the fourth target set temperature is reached.

[0132] After running at the fourth target set temperature for a fourth running time, the fourth target set temperature is increased by the fourth temperature adjustment step to adjust to the original set temperature, which includes: after running at the fourth target set temperature for a fourth running time, the fourth target set temperature is increased by the fourth sub-step every fourth adjustment time until the original set temperature is reached.

[0133] In this embodiment of the invention, when lowering the set temperature corresponding to the refrigeration system 11, it is necessary to do so in a gradual manner; similarly, when restoring the set temperature, it is necessary to do so in a gradual manner. For example, the third and fourth adjustment durations are set to 10 seconds, and the third and fourth sub-steps are set to 0.2°C.

[0134] When the refrigeration system 11 is currently in refrigeration mode, it lowers the current set temperature by 0.2°C every 10 seconds until the third target set temperature T is reached. s_c3 After running for a maximum of 10 minutes, the current set temperature is increased by 0.2°C every 10 seconds until the original set temperature T is reached. s_u .

[0135] When the cooling system 11 is currently in heating mode, the current set temperature is reduced by 0.2°C every 10 seconds until the fourth target set temperature T is reached. s_c4 After running for a maximum of 10 minutes, the current set temperature is increased by 0.2°C every 10 seconds until the original set temperature T is reached. s_u .

[0136] By employing the technical means of this invention, an odor sensor is used to detect the indoor air quality odor index. Based on the relationship between the current air quality odor index and the rate of increase of the odor index, the system intelligently controls the start / stop and airflow of the air conditioner's fresh air module, the start / stop of the air purification module, and / or the set temperature of the cooling system. This enables timely purification of indoor air, effectively eliminating indoor odors, reducing energy consumption, ensuring that the indoor environment is always in a comfortable and clean state, and improving the user's comfort experience.

[0137] See Figure 10 This is a schematic flowchart of an air purification method for an air conditioner provided in an embodiment of the present invention. The present invention also provides an air purification method for an air conditioner, wherein the air conditioner includes:

[0138] A refrigeration system is used to perform either cooling or heating functions.

[0139] Fresh air module, used to replace indoor and outdoor air;

[0140] Air purification module, used to purify indoor air;

[0141] Odor sensor, used to detect the odor index of indoor air quality;

[0142] The air purification method of the air conditioner includes steps S21 to S23:

[0143] S21. Periodically obtain the air quality odor index currently detected by the odor sensor;

[0144] S22. Calculate the rate of increase of the odor index based on the current air quality odor index and the air quality odor index obtained last time.

[0145] S23. Based on the rate of increase of the odor index and the current air quality odor index, control the operating status of the fresh air module, the air purification module, and / or the refrigeration system.

[0146] By employing the technical means of this invention, an odor sensor is used to detect the indoor air quality odor index. Based on the relationship between the current air quality odor index and the rate of increase of the odor index, the operating status of the air conditioner's fresh air module, air purification module, and / or refrigeration system is intelligently controlled. This enables timely purification of indoor air, effectively eliminating indoor odors, reducing energy consumption, ensuring that the indoor environment is always in a comfortable and clean state, and improving the user's comfort experience.

[0147] In a preferred embodiment, controlling the operating status of the fresh air module, the air purification module, and / or the refrigeration system based on the odor index increase rate and the current air quality odor index includes:

[0148] When the rate of increase of the odor index is greater than the first rate threshold and less than or equal to the second rate threshold, and the current air quality odor index is greater than the first index threshold and less than or equal to the second index threshold, the air conditioner is controlled to enter the first operating mode until the current air quality odor index is less than or equal to the standard index threshold, at which point the first operating mode is exited.

[0149] In the first operating mode, the fresh air module is activated and operates at a first air volume; the standard index threshold is less than the first index threshold, the first index threshold is less than the second index threshold, and the first rate threshold is less than the second rate threshold.

[0150] In a preferred embodiment, controlling the operating status of the fresh air module, the air purification module, and / or the refrigeration system based on the odor index increase rate and the current air quality odor index further includes:

[0151] When the rate of increase of the odor index is greater than the first rate threshold and less than or equal to the second rate threshold, and the current air quality odor index is greater than the second index threshold, the air conditioner is controlled to enter the second operating mode until the current air quality odor index is less than or equal to the first index threshold, then the air conditioner exits the second operating mode and enters the first operating mode.

[0152] In the second operating mode, the fresh air module is activated and operates at the second air volume, the air purification module is activated and operates, and the set temperature of the refrigeration system is reduced according to the current operating mode of the refrigeration system; the second air volume is greater than the first air volume.

[0153] In a preferred embodiment, in the second operating mode, lowering the set temperature corresponding to the refrigeration system according to the current operating mode of the refrigeration system includes:

[0154] When the current working mode of the refrigeration system is refrigeration mode, the original set temperature of the refrigeration system is reduced by a first temperature adjustment step to adjust to the first target set temperature.

[0155] After running for a first running time at the first target set temperature, the first target set temperature is increased by the first temperature adjustment step to adjust to the original set temperature;

[0156] When the current working mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by the second temperature adjustment step to adjust to the second target set temperature.

[0157] After running for a second duration at the second target set temperature, the second target set temperature is increased by the second temperature adjustment step to adjust to the original set temperature;

[0158] Wherein, the second temperature adjustment step size is smaller than the first temperature adjustment step size.

[0159] In a preferred embodiment, when the current operating mode of the refrigeration system is refrigeration mode, adjusting the original set temperature of the refrigeration system to a first target set temperature by reducing the original set temperature by a first temperature adjustment step includes:

[0160] When the current working mode of the refrigeration system is refrigeration mode, the original set temperature of the refrigeration system is reduced by a first sub-step every first adjustment time until the first target set temperature is reached.

[0161] After running at the first target set temperature for a first running time, the first target set temperature is increased by the first temperature adjustment step to adjust to the original set temperature, including:

[0162] After running at the first target set temperature for a first running time, the first target set temperature is increased by the first sub-step every first adjustment time until the original set temperature is reached.

[0163] When the current operating mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by a second temperature adjustment step to adjust it to the second target set temperature, including:

[0164] When the current working mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by a second sub-step every second adjustment period until the second target set temperature is reached.

[0165] After running at the second target set temperature for a second running time, increasing the second target set temperature by the second temperature adjustment step to adjust it back to the original set temperature includes:

[0166] After running for a second duration at the second target set temperature, the second target set temperature is increased by the second sub-step every second adjustment duration until the original set temperature is reached.

[0167] In a preferred embodiment, controlling the operating status of the fresh air module, the air purification module, and / or the refrigeration system based on the odor index increase rate and the current air quality odor index further includes:

[0168] When the rate of increase of the odor index is greater than the second rate threshold, and the current air quality odor index is greater than the first index threshold but less than or equal to the second index threshold, the air conditioner is controlled to enter the second operating mode until the current air quality odor index is less than or equal to the first index threshold, at which point it exits the second operating mode and enters the first operating mode.

[0169] In a preferred embodiment, controlling the operating status of the fresh air module, the air purification module, and / or the refrigeration system based on the odor index increase rate and the current air quality odor index further includes:

[0170] When the rate of increase of the odor index is greater than the second rate threshold, and the current air quality odor index is greater than the second index threshold, the air conditioner is controlled to enter the third operating mode until the current air quality odor index is greater than the first index threshold and less than or equal to the second index threshold, then the third operating mode is exited and the second operating mode is entered.

[0171] In the third operating mode, the fresh air module is activated and operates at a third air volume, the air purification module is activated and operates, and the set temperature of the refrigeration system is reduced according to the current operating mode of the refrigeration system; the third air volume is greater than the second air volume.

[0172] In a preferred embodiment, in the third operating mode, lowering the set temperature corresponding to the refrigeration system according to the current operating mode of the refrigeration system includes:

[0173] When the current working mode of the refrigeration system is refrigeration mode, the original set temperature of the refrigeration system is reduced by the third temperature adjustment step to the third target set temperature.

[0174] After running for a third running time at the third target set temperature, the third target set temperature is increased by the third temperature adjustment step to adjust to the original set temperature;

[0175] When the current working mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by the fourth temperature adjustment step to the fourth target set temperature.

[0176] After running for a fourth running time at the fourth target set temperature, the fourth target set temperature is increased by the fourth temperature adjustment step to adjust to the original set temperature;

[0177] The fourth temperature adjustment step size is smaller than the third temperature adjustment step size.

[0178] In a preferred embodiment, when the current operating mode of the refrigeration system is refrigeration mode, adjusting the original set temperature of the refrigeration system to a third temperature adjustment step size, and adjusting it to a third target set temperature, includes:

[0179] When the current working mode of the refrigeration system is refrigeration mode, the original set temperature of the refrigeration system is reduced by a third sub-step every third adjustment time until the third target set temperature is reached.

[0180] After running at the third target set temperature for a third running time, the third target set temperature is increased by the third temperature adjustment step to adjust to the original set temperature, including:

[0181] After running for a third running time at the third target set temperature, the third target set temperature is increased by the third sub-step every third adjustment time until the original set temperature is reached.

[0182] When the current operating mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by a fourth temperature adjustment step to adjust it to the fourth target set temperature, including:

[0183] When the current working mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by a fourth sub-step every fourth adjustment period until the fourth target set temperature is reached.

[0184] After running for a fourth running time at the fourth target set temperature, the fourth target set temperature is increased by the fourth temperature adjustment step to adjust to the original set temperature, including:

[0185] After running for a fourth running time at the fourth target set temperature, the fourth target set temperature is increased by the fourth sub-step every fourth adjustment time until the original set temperature is reached.

[0186] It should be noted that the air purification method for an air conditioner provided in this embodiment of the invention has the same process steps as the controller of an air conditioner in the above embodiment. The working principles and beneficial effects of the two are one-to-one, so they will not be described again.

[0187] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0188] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An air conditioner, characterized in that, include: A refrigeration system is used to perform either cooling or heating functions. Fresh air module, used to replace indoor and outdoor air; Air purification module, used to purify indoor air; Odor sensor, used to detect the odor index of indoor air quality; The controller is configured as follows: The air quality odor index currently detected by the odor sensor is periodically obtained; Calculate the rate of increase of the odor index based on the current air quality odor index and the previously obtained air quality odor index; Based on the rate of increase of the odor index and the current air quality odor index, control the operating status of the fresh air module, the air purification module and / or the refrigeration system; The step of controlling the operating status of the fresh air module, the air purification module, and / or the refrigeration system based on the rate of increase of the odor index and the current air quality odor index includes: When the rate of increase of the odor index is greater than the first rate threshold and less than or equal to the second rate threshold, and the current air quality odor index is greater than the first index threshold and less than or equal to the second index threshold, the air conditioner is controlled to enter the first operating mode until the current air quality odor index is less than or equal to the standard index threshold, at which point the first operating mode is exited. In the first operating mode, the fresh air module is started and operates at a first air volume; the standard index threshold is less than the first index threshold, the first index threshold is less than the second index threshold, and the first rate threshold is less than the second rate threshold. The method of controlling the operating status of the fresh air module, the air purification module, and / or the refrigeration system based on the odor index increase rate and the current air quality odor index further includes: When the rate of increase of the odor index is greater than the first rate threshold and less than or equal to the second rate threshold, and the current air quality odor index is greater than the second index threshold, the air conditioner is controlled to enter the second operating mode until the current air quality odor index is less than or equal to the first index threshold, then the air conditioner exits the second operating mode and enters the first operating mode. In the second operating mode, the fresh air module is activated and operates at the second air volume, the air purification module is activated and operates, and the set temperature of the refrigeration system is reduced according to the current operating mode of the refrigeration system; the second air volume is greater than the first air volume.

2. The air conditioner as described in claim 1, characterized in that, In the second operating mode, lowering the set temperature corresponding to the refrigeration system according to the current operating mode of the refrigeration system includes: When the current working mode of the refrigeration system is refrigeration mode, the original set temperature of the refrigeration system is reduced by a first temperature adjustment step to adjust to the first target set temperature. After running for a first running time at the first target set temperature, the first target set temperature is increased by the first temperature adjustment step to adjust to the original set temperature; When the current working mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by the second temperature adjustment step to adjust to the second target set temperature. After running for a second duration at the second target set temperature, the second target set temperature is increased by the second temperature adjustment step to adjust to the original set temperature; Wherein, the second temperature adjustment step size is smaller than the first temperature adjustment step size.

3. The air conditioner as described in claim 2, characterized in that, When the current operating mode of the refrigeration system is refrigeration mode, the original set temperature corresponding to the refrigeration system is reduced by a first temperature adjustment step to adjust it to the first target set temperature, including: When the current working mode of the refrigeration system is refrigeration mode, the original set temperature of the refrigeration system is reduced by a first sub-step every first adjustment time until the first target set temperature is reached. After running at the first target set temperature for a first running time, the first target set temperature is increased by the first temperature adjustment step to adjust to the original set temperature, including: After running at the first target set temperature for a first running time, the first target set temperature is increased by the first sub-step every first adjustment time until the original set temperature is reached. When the current operating mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by a second temperature adjustment step to adjust it to the second target set temperature, including: When the current working mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by a second sub-step every second adjustment period until the second target set temperature is reached. After running at the second target set temperature for a second running time, increasing the second target set temperature by the second temperature adjustment step to adjust it back to the original set temperature includes: After running for a second duration at the second target set temperature, the second target set temperature is increased by the second sub-step every second adjustment duration until the original set temperature is reached.

4. The air conditioner as described in claim 1, characterized in that, The method of controlling the operating status of the fresh air module, the air purification module, and / or the refrigeration system based on the odor index increase rate and the current air quality odor index further includes: When the rate of increase of the odor index is greater than the second rate threshold, and the current air quality odor index is greater than the first index threshold but less than or equal to the second index threshold, the air conditioner is controlled to enter the second operating mode until the current air quality odor index is less than or equal to the first index threshold, at which point it exits the second operating mode and enters the first operating mode.

5. The air conditioner as described in claim 1, characterized in that, The method of controlling the operating status of the fresh air module, the air purification module, and / or the refrigeration system based on the odor index increase rate and the current air quality odor index further includes: When the rate of increase of the odor index is greater than the second rate threshold, and the current air quality odor index is greater than the second index threshold, the air conditioner is controlled to enter the third operating mode until the current air quality odor index is greater than the first index threshold and less than or equal to the second index threshold, then the third operating mode is exited and the second operating mode is entered. In the third operating mode, the fresh air module is activated and operates at a third air volume, the air purification module is activated and operates, and the set temperature of the refrigeration system is reduced according to the current operating mode of the refrigeration system; the third air volume is greater than the second air volume.

6. The air conditioner as described in claim 5, characterized in that, In the third operating mode, lowering the set temperature corresponding to the refrigeration system according to the current operating mode of the refrigeration system includes: When the current working mode of the refrigeration system is refrigeration mode, the original set temperature of the refrigeration system is reduced by the third temperature adjustment step to the third target set temperature. After running for a third running time at the third target set temperature, the third target set temperature is increased by the third temperature adjustment step to adjust to the original set temperature; When the current working mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by the fourth temperature adjustment step to the fourth target set temperature. After running for a fourth running time at the fourth target set temperature, the fourth target set temperature is increased by the fourth temperature adjustment step to adjust to the original set temperature; The fourth temperature adjustment step size is smaller than the third temperature adjustment step size.

7. The air conditioner as described in claim 6, characterized in that, When the current operating mode of the refrigeration system is refrigeration mode, the original set temperature corresponding to the refrigeration system is reduced by a third temperature adjustment step to adjust it to the third target set temperature, including: When the current working mode of the refrigeration system is refrigeration mode, the original set temperature of the refrigeration system is reduced by a third sub-step every third adjustment time until the third target set temperature is reached. After running at the third target set temperature for a third running time, the third target set temperature is increased by the third temperature adjustment step to adjust to the original set temperature, including: After running for a third running time at the third target set temperature, the third target set temperature is increased by the third sub-step every third adjustment time until the original set temperature is reached. When the current operating mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by a fourth temperature adjustment step to adjust it to the fourth target set temperature, including: When the current working mode of the refrigeration system is heating mode, the original set temperature of the refrigeration system is reduced by a fourth sub-step every fourth adjustment period until the fourth target set temperature is reached. After running for a fourth running time at the fourth target set temperature, the fourth target set temperature is increased by the fourth temperature adjustment step to adjust to the original set temperature, including: After running for a fourth running time at the fourth target set temperature, the fourth target set temperature is increased by the fourth sub-step every fourth adjustment time until the original set temperature is reached.

8. An air purification method for an air conditioner, characterized in that, The air conditioner includes: A refrigeration system is used to perform either cooling or heating functions. Fresh air module, used to replace indoor and outdoor air; Air purification module, used to purify indoor air; Odor sensor, used to detect the odor index of indoor air quality; The method includes: The air quality odor index currently detected by the odor sensor is periodically obtained; Calculate the rate of increase of the odor index based on the current air quality odor index and the previously obtained air quality odor index; Based on the rate of increase of the odor index and the current air quality odor index, control the operating status of the fresh air module, the air purification module and / or the refrigeration system; The step of controlling the operating status of the fresh air module, the air purification module, and / or the refrigeration system based on the rate of increase of the odor index and the current air quality odor index includes: When the rate of increase of the odor index is greater than the first rate threshold and less than or equal to the second rate threshold, and the current air quality odor index is greater than the first index threshold and less than or equal to the second index threshold, the air conditioner is controlled to enter the first operating mode until the current air quality odor index is less than or equal to the standard index threshold, at which point the first operating mode is exited. In the first operating mode, the fresh air module is started and operates at a first air volume; the standard index threshold is less than the first index threshold, the first index threshold is less than the second index threshold, and the first rate threshold is less than the second rate threshold. The method of controlling the operating status of the fresh air module, the air purification module, and / or the refrigeration system based on the odor index increase rate and the current air quality odor index further includes: When the rate of increase of the odor index is greater than the first rate threshold and less than or equal to the second rate threshold, and the current air quality odor index is greater than the second index threshold, the air conditioner is controlled to enter the second operating mode until the current air quality odor index is less than or equal to the first index threshold, then the air conditioner exits the second operating mode and enters the first operating mode. In the second operating mode, the fresh air module is activated and operates at the second air volume, the air purification module is activated and operates, and the set temperature of the refrigeration system is reduced according to the current operating mode of the refrigeration system; the second air volume is greater than the first air volume.

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