Air conditioner and its control method, computer-readable storage medium

Abstract

The present invention discloses a control method for an air conditioner, the method comprising: controlling the air conditioner to operate in a first ventilation mode; during the operation of the air conditioner in the first ventilation mode, if there is an opening instruction for a second ventilation mode, controlling the air conditioner to perform a temperature adjustment operation, and controlling the air conditioner to switch to the second ventilation mode for operation; wherein, the temperature adjustment operation is used to reduce the temperature difference between the air entering the air duct and the air duct in the second ventilation mode, the first ventilation mode is one of a fresh air mode and an exhaust mode, the second ventilation mode is the other of the fresh air mode and the exhaust mode, outdoor air enters the room through the air duct of the air conditioner in the fresh air mode, and indoor air is discharged outdoors through the air duct in the exhaust mode. The present invention also discloses an air conditioner and a computer-readable storage medium. The present invention aims to avoid the generation of condensed water in the air duct of the air conditioner during the switching between fresh air and exhaust, and ensure the normal operation of the components in the air duct.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly to a control method for an air conditioner, an air conditioner, and a computer-readable storage medium. Background Art

[0002] With the development of economy and technology, air conditioners are more and more widely used, and their performance is constantly optimized. Among them, some air conditioners are provided with a fresh air function and an exhaust function to ventilate the indoor environment and ensure the indoor environmental quality.

[0003] During the use of the air conditioner, sometimes it is necessary to switch from fresh air to exhaust, and sometimes it is necessary to switch from exhaust to fresh air. However, if the temperature and humidity deviation between indoor and outdoor air is large, the switching between fresh air and exhaust is likely to cause condensation water in the air conditioner, affecting the normal operation of the air conditioner. Summary of the Invention

[0004] The main purpose of the present invention is to provide a control method for an air conditioner, an air conditioner, and a computer-readable storage medium, aiming to avoid the generation of condensation water in the air duct of the air conditioner during the switching between fresh air and exhaust, and ensure the normal operation of the devices in the air duct.

[0005] To achieve the above object, the present invention provides a control method for an air conditioner, and the control method for the air conditioner includes the following steps:

[0006] Control the air conditioner to operate in a first ventilation mode;

[0007] During the operation of the air conditioner in the first ventilation mode, if there is an opening instruction for a second ventilation mode, control the air conditioner to perform a temperature adjustment operation, and control the air conditioner to switch to the second ventilation mode for operation;

[0008] Wherein, the temperature adjustment operation is used to reduce the temperature difference between the air entering the air duct in the second ventilation mode and the air duct. The first ventilation mode is one of a fresh air mode and an exhaust mode, and the second ventilation mode is the other of the fresh air mode and the exhaust mode. In the fresh air mode, outdoor air enters the room through the air duct of the air conditioner, and in the exhaust mode, indoor air is discharged outdoors through the air duct.

[0009] Optionally, the step of controlling the air conditioner to perform a temperature adjustment operation and controlling the air conditioner to switch to the second ventilation mode for operation includes:

[0010] When the first ventilation mode is the fresh air mode, the second ventilation mode is the exhaust mode, and the air conditioner is in the heating operation, control the fan in the air duct to stop running to increase the temperature of the air duct. The temperature adjustment operation includes the fan stopping running;

[0011] When the fan stops and there is no risk of condensation in the air duct, control the air conditioner to switch to the exhaust mode for operation.

[0012] Optionally, the steps of controlling the air conditioner to perform a temperature adjustment operation and controlling the air conditioner to switch to the second ventilation mode for operation include:

[0013] When the first ventilation mode is the fresh air mode, the second ventilation mode is the exhaust mode, and the air conditioner is in heating operation, control the heating module in the air duct to turn on and control the air conditioner to switch to the exhaust mode for operation. The temperature adjustment operation includes turning on the heating module.

[0014] Optionally, the steps of controlling the air conditioner to perform a temperature adjustment operation and controlling the air conditioner to switch to the second ventilation mode for operation include:

[0015] When the first ventilation mode is the exhaust mode, the second ventilation mode is the fresh air mode, and the air conditioner is in cooling operation, control the air conditioner to turn on the internal circulation operation and control the air conditioner to switch to the fresh air mode for operation. When the internal circulation operation is turned on, indoor air enters the air duct and mixes with the outdoor air entering the air duct. The temperature adjustment operation includes the internal circulation operation.

[0016] Optionally, after the step of controlling the air conditioner to perform a temperature adjustment operation, it further includes:

[0017] During the execution of the temperature adjustment operation, obtain a status parameter; the status parameter is a parameter characterizing the condensation risk situation of the air duct;

[0018] When it is determined according to the status parameter that there is no condensation risk in the air duct, control the air conditioner to stop executing the temperature adjustment operation.

[0019] Optionally, the step of obtaining the status parameter includes:

[0020] Detect the first temperature in the air duct and the execution duration of the temperature adjustment operation. The status parameter includes the first temperature and the execution duration;

[0021] After the step of obtaining the status parameter, it further includes:

[0022] When the first temperature is greater than or equal to the target dew point temperature, or when the execution duration is greater than or equal to the target duration, determine that there is no condensation risk in the air duct;

[0023] Wherein, the target dew point temperature is the dew point temperature of the air entering the air duct in the second ventilation mode.

[0024] Optionally, during the operation of the air conditioner in the first ventilation mode, if there is an opening instruction for the second ventilation mode, the steps of controlling the air conditioner to perform a temperature adjustment operation and controlling the air conditioner to switch to the second ventilation mode include:

[0025] During the operation of the air conditioner in the first ventilation mode, if there is an opening instruction for the second ventilation mode, obtain the indoor temperature, outdoor temperature, and target humidity, where the target humidity is the humidity of the air to be introduced into the air duct during the operation of the second ventilation mode;

[0026] Determine whether there is a risk of condensation in the air duct when the air conditioner switches to the second ventilation mode according to the indoor temperature, outdoor temperature, and the target humidity;

[0027] If it is determined that there is a risk of condensation in the air duct when the air conditioner switches to the second ventilation mode, then perform the steps of controlling the air conditioner to perform a temperature adjustment operation and controlling the air conditioner to switch to the second ventilation mode.

[0028] Optionally, after the step of determining whether there is a risk of condensation in the air duct when the air conditioner switches to the second ventilation mode according to the indoor temperature, outdoor temperature, and the target humidity, it further includes:

[0029] If it is determined that there is no risk of condensation in the air duct when the air conditioner switches to the second ventilation mode, then control the air conditioner to switch to the second ventilation mode.

[0030] Optionally, the step of determining whether there is a risk of condensation in the air duct when the air conditioner switches to the second ventilation mode according to the indoor temperature, outdoor temperature, and the target humidity includes:

[0031] When the first target temperature is less than the first set temperature, the second target temperature is greater than the second set temperature, and the target humidity is greater than the set humidity, determine that there is a risk of condensation in the air duct when the air conditioner switches to the second ventilation mode;

[0032] When the first target temperature is greater than or equal to the first set temperature, or when the second target temperature is less than or equal to the second set temperature, or when the target humidity is less than or equal to the set humidity, determine that there is no risk of condensation in the air duct when the air conditioner switches to the second ventilation mode;

[0033] Wherein, the first target temperature is the temperature of the air entering the air duct in the first ventilation mode among the indoor temperature and the outdoor temperature, the second target temperature is the temperature of the air entering the air duct in the second ventilation mode among the indoor temperature and the outdoor temperature, and the first set temperature is less than the second set temperature.

[0034] In addition, to achieve the above object, the present application further provides an air conditioner, which includes: a memory, a processor, and a control program of the air conditioner stored on the memory and executable on the processor. When the control program of the air conditioner is executed by the processor, the steps of the control method of the air conditioner described in any one of the above are implemented.

[0035] In addition, to achieve the above object, the present application further provides a computer-readable storage medium, on which a control program of an air conditioner is stored. When the control program of the air conditioner is executed by a processor, the steps of the control method of the air conditioner described in any one of the above are implemented.

[0036] A control method of an air conditioner proposed by the present invention is based on an air conditioner that uses the same air duct to implement a fresh air mode and a ventilation mode. During the operation of the air conditioner in one of the ventilation modes of the fresh air mode and the exhaust mode, when an instruction to turn on the other ventilation mode among the fresh air mode and the exhaust mode is received, instead of directly switching to the required ventilation mode for operation, a temperature adjustment operation is also performed. By the temperature adjustment operation, the temperature difference between the air duct and the air entering the air duct in the required ventilation mode to be turned on is reduced, thereby effectively preventing the generation of condensed water in the air duct due to excessive indoor and outdoor temperature and humidity differences during the fresh air and exhaust switching, avoiding moisture absorption of the components in the air duct, and ensuring the normal operation of the components in the air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic structural diagram of an embodiment of the air conditioner of the present invention;

[0038] Figure 2 It is a schematic hardware structure diagram involved in the operation of an embodiment of the control device of the air conditioner of the present invention;

[0039] Figure 3 It is a schematic flowchart of an embodiment of the control method of the air conditioner of the present invention;

[0040] Figure 4 It is a schematic flowchart of another embodiment of the control method of the air conditioner of the present invention;

[0041] Figure 5 It is a schematic flowchart of still another embodiment of the control method of the air conditioner of the present invention;

[0042] Figure 6Schematic flow chart of another embodiment of the control method for the air conditioner of the present invention.

[0043] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0044] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] The main solution of the embodiment of the present invention is: controlling the air conditioner to operate in a first ventilation mode; during the operation of the air conditioner in the first ventilation mode, if there is an opening instruction for the second ventilation mode, controlling the air conditioner to perform a temperature adjustment operation, and controlling the air conditioner to switch to the second ventilation mode for operation; wherein, the temperature adjustment operation is used to reduce the temperature difference between the air entering the air duct in the second ventilation mode and the air duct, the first ventilation mode is one of the fresh air mode and the exhaust mode, the second ventilation mode is the other of the fresh air mode and the exhaust mode, outdoor air enters the room through the air duct in the fresh air mode, and indoor air is discharged outdoors through the air duct in the exhaust mode.

[0046] In the prior art, during the use of the air conditioner, sometimes it is necessary to switch from fresh air to exhaust, and sometimes it is necessary to switch from exhaust to fresh air. However, if the temperature and humidity deviation between indoor and outdoor air is large, the switching between fresh air and exhaust is likely to cause condensation water in the air conditioner, affecting the normal operation of the air conditioner.

[0047] The present invention provides the above solution to avoid the generation of condensation water in the air duct of the air conditioner during the switching between fresh air and exhaust, and ensure the normal operation of the components in the air duct.

[0048] An embodiment of the present invention proposes an air conditioner. The air conditioner may specifically be a cabinet air conditioner, a wall-mounted air conditioner, a window air conditioner, a ceiling-mounted air conditioner, etc.

[0049] In the embodiment of the present invention, referring to Figure 1 , the air conditioner includes a housing 1 and a blower 2. The housing 1 is provided with an outdoor air outlet 02, an indoor air inlet 03 and an indoor air outlet 04. An air duct 01 is provided inside the housing 1. The outdoor air outlet 02, the indoor air inlet 03 and the indoor air outlet 04 are all communicated with the air duct 01. The blower 2 is arranged in the air duct 01.

[0050] Wherein, the air conditioner may further include a heat exchange module for adjusting the indoor air temperature. The heat exchange module may be arranged in the air duct 01 or in other spaces inside the housing 1 that are isolated from the air duct 01.

[0051] Specifically, the outdoor air outlet 02, the indoor air inlet 03, and / or the outdoor air outlet 02 may be provided with a valve 5 according to actual needs to control the opening or closing of the air outlet. A guiding structure may also be provided in the air duct 01 to control the flow direction of the air flow in the air duct 01 when the fan 2 is turned on, so that the air conditioner can have more than one ventilation mode. The rotation direction of the fan 2 can be fixed to one, or can have more than one rotation direction (such as forward rotation and reverse rotation).

[0052] Based on this, the air conditioner has at least two ventilation modes. In this embodiment, the at least two ventilation modes include a fresh air mode and an exhaust mode. In the fresh air mode, the fan 2 drives outdoor fresh air to enter the air duct 01 from the outdoor air outlet 02 and is sent into the room from the indoor air outlet 04. In the exhaust mode, the fan 2 drives indoor air to enter the air duct 01 from the indoor air inlet 03 and is discharged outdoors from the outdoor air outlet 02. Among them, when no guiding structure is provided in the air duct 01, the rotation direction of the fan 2 in the fresh air mode may be different from the rotation direction of the fan 2 in the exhaust mode, and the air conditioner is switched between different ventilation modes by switching the rotation direction of the fan 2. When a guiding structure is provided in the air duct 01, the rotation direction of the fan 2 in the fresh air mode may be the same as the rotation direction of the fan 2 in the exhaust mode, and the air conditioner is switched between different ventilation modes by the guiding structure or in combination with the valve 5 provided at the air outlet. It should be noted that in addition to the above two ventilation modes, the air conditioner may also be provided with other types of ventilation modes according to actual needs. For example, the above exhaust mode is defined as the first exhaust mode, and the air conditioner may also have a second exhaust mode. In the second exhaust mode, the fan 2 drives indoor air to enter the air duct 01 from the indoor air outlet 04 and is discharged outdoors from the outdoor air outlet 02, and so on.

[0053] In this embodiment, the air conditioner is set in the above manner. Through one air duct 01 and one fan 2, the air conditioner can have at least two ventilation modes. Based on this, when the air conditioner is connected to the outside through one air duct, the functions of introducing fresh air and discharging polluted air of the air conditioner can be realized simultaneously.

[0054] Further, in this embodiment, referring to Figure 1 , the air conditioner further includes a partition board, which is arranged in the housing 1 and divides the air duct 01 into a first air cavity 011 and a second air cavity 012. The partition board is provided with a first air outlet 05 and a second air outlet 06, and both the first air outlet 05 and the second air outlet 06 communicate the first air cavity 011 and the second air cavity 012. The fan 2 is arranged in the second air cavity 012, the outdoor air outlet 02 is arranged in the first air cavity 011, and both the indoor air inlet 03 and the indoor air outlet 04 are arranged in the second air cavity 012.

[0055] Specifically, in the exhaust mode, the first air vent 05 is closed, the second air vent 06 is opened, and the fan 2 is controlled to start. When starting, the indoor air passes through the indoor air inlet 03, the second air chamber 012, the second air vent 06, the first air chamber 011, and the outdoor air vent 02 in sequence and then is discharged outdoors (as Figure 1 shown by the dotted line in

[0056] In the fresh air mode, the first air vent 05 is opened, the second air vent 06 is closed, and the fan 2 is controlled to start. When the fan 2 starts, the outdoor air passes through the outdoor air vent 02, the first air chamber 011, the first air vent 05, the second air chamber 012, and the indoor air inlet 03 in sequence and then is sent into the room (as Figure 1 shown by the straight line in

[0057] Among them, a valve 5 may be provided at the first air vent 05 and / or the second air vent 06 to control the opening or closing of the first air vent 05 and / or the second air vent 06. The partition here can cooperate with the housing 1 and / or other structural members in the housing 1 to form the above-mentioned guiding mechanism to control the flow direction of the air flow in the air duct 01.

[0058] Here, through the cooperation of multiple air vents provided by the housing 1 and the partition in the housing 1, the air conditioner can achieve multiple ventilation modes such as the exhaust mode and the fresh air mode.

[0059] Furthermore, the first air vent 05 is provided on the air inlet side of the fan 2, the second air vent 06 is provided on the air outlet side of the fan 2. Define the rotation direction of the fan 2 in the fresh air mode as the first rotation direction, and define the rotation direction of the fan 2 in the exhaust mode as the second rotation direction. The first rotation direction is the same as the second rotation direction. Based on this, the fan 2 can realize the switching of the air flow direction in the air duct 01 without reversing. It should be noted that the indoor air inlet 03 is also provided on the air inlet side of the fan 2.

[0060] Specifically, the first air chamber 011 is divided into two connected areas on the air outlet side of the fan 2, which are respectively defined as the first area and the second area. The air resistance of the first area is greater than that of the second area. Based on this, the second air vent 06 is connected to the second area and the first air chamber 011, and the indoor air outlet 04 is provided in the first area. Based on this, it is beneficial to the smooth discharge of the air flow in the air duct 01 outdoors in the exhaust mode and improve the exhaust efficiency.

[0061] Further, an air conditioning module 3 may be provided in the air duct 01. Specifically, when the air duct 01 includes the first air chamber 011 and the second air chamber 012, the air conditioning module 3 may be provided in the second air chamber 012. The air conditioning module 3 may be one or more of a heat exchange module, a purification module (such as a formaldehyde removal module, an activated carbon module, a plasma sterilization module), a humidity adjustment module (such as a dehumidification module and / or a humidification module), an oxygenation module (such as a positive and negative ion module), a fragrance adjustment module, a heating module (such as an electric auxiliary heating module, etc.) and / or a filtering module (such as a HEPA net (High efficiency particulate air Filter), etc.) in any functional module with an air conditioning function. The air conditioning module 3 may be fixedly installed in the air duct 01 or detachably installed in the air duct 01.

[0062] In this embodiment, the air conditioning module 3 may also be detachably installed in the air duct 01. Specifically, an installation base may be provided in the air duct 01. The installation base may include one or more installation parts, and each installation part may be detachably connected to the air conditioning module 3. For example, the installation part is an installation groove, and the air conditioning module 3 and the installation groove may be detachably connected through plug-in cooperation. Based on this, the user may install the air conditioning module 3 he needs to use into the air duct 01 according to actual usage requirements to adjust the air flowing through the air duct 01. Among them, an identification module 4 may be provided at a position corresponding to the installation base in the air duct 01, and an identification part (such as an RFID card, a barcode, a two-dimensional code, etc.) carrying identification information may be provided on the air conditioning module 3. The identification information carried by the identification parts corresponding to different air conditioning modules 3 is different. Based on this, by identifying the identification information in the detection parameters of the identification module 4, information such as whether the air conditioning module 3 is installed in the air duct 01, the type of the installed air conditioning module 3, and the position of the installed air conditioning module 3 can be determined based on the identification result. Further, in order to ensure the accuracy of the identification result, each installation part may be respectively provided with an identification module 4, and the detection range of each identification module 4 covers its corresponding installation part. Based on this, only when the identification part of the air conditioning module 3 is within the detection range of the identification module 4 can it be effectively detected.

[0063] Specifically, the air conditioning module 3 here may be provided in the above-mentioned first area. Based on this, in the fresh air mode, the introduced fresh air may be adjusted by the air conditioning module 3 in the first area and then sent into the room through the indoor air outlet 04; in the exhaust mode, since the air conditioning module 3 is provided in the first area, the indoor air entering the air duct 01 from the indoor air inlet 03 has a relatively large air resistance. Therefore, the indoor air enters the first air chamber 011 from the second area with a relatively small air resistance and is then discharged outdoors through the outdoor air outlet 02.

[0064] Further, a detection module 6 may also be provided in the air duct 01 for detecting the temperature of the air duct or the temperature of the flowing air. In this embodiment, the detection module 6 is specifically provided on the side of the partition on the air outlet side of the fan 2. In other embodiments, the detection module 6 may also be provided at other positions in the air duct 01 according to actual requirements.

[0065] Further, a heating module 7 may also be provided in the air duct 01 for heating the air duct. In this embodiment, the heating module 7 is an electric auxiliary heating module. In other embodiments, the heating module 7 may also be a heat storage module.

[0066] Further, in the embodiment of the present invention, referring to Figure 2 , the air conditioner further includes a control device, and the above-mentioned fan 2, identification module 4, valve 5, detection module 6, heating module 7, etc. are all connected to the control device here. The control device can be used to control the operation of components such as the fan 2, valve 5, heating module 7, and identification module 4. In addition, the control device can also be used to obtain the temperature data detected by the detection module 6. The control device includes: a processor 1001 (such as a CPU), a memory 1002, etc. The processor 1001 is connected to the memory 1002. The memory 1002 can be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. Optionally, the memory 1002 can also be a storage device independent of the aforementioned processor 1001.

[0067] Those skilled in the art can understand that Figure 2 the device structure shown in

[0068] does not constitute a limitation to the device, and it may include more or fewer components than shown in the figure, or combine some components, or arrange different components. Figure 2 As shown in Figure 2 , the memory 1002, as a computer-readable storage medium, may include a control program for the air conditioner. In the device shown in

[0069] , the processor 1001 can be used to call the control program for the air conditioner stored in the memory 1002 and execute the relevant step operations of the control method for the air conditioner in the following embodiments.

[0070] The embodiment of the present invention also provides a control method for an air conditioner, which is applied to controlling the above-mentioned air conditioner. Figure 3 Referring to

[0071] , an embodiment of the control method for the air conditioner of the present application is proposed. In this embodiment, the air conditioner includes a housing, and an air duct is provided in the housing. The control method for the air conditioner includes:

[0072] The air conditioner has at least two ventilation modes, and the at least two ventilation modes include a fresh air mode, an exhaust mode, etc. The at least two ventilation modes all use the same air duct for ventilation. In the fresh air mode, outdoor air enters the room through the air duct, and in the exhaust mode, indoor air is discharged outdoors through the air duct.

[0073] Specifically, in the fresh air mode, the fan drives outdoor fresh air to enter the air duct from the outdoor air outlet and is sent into the room from the indoor air outlet. In the fresh air mode, the indoor air inlet can be opened or closed. In the exhaust mode, the fan drives indoor air to enter the air duct from the indoor air inlet and is discharged outdoors from the outdoor air outlet. In the exhaust mode, the indoor air outlet can be opened or closed. Among them, closing the indoor air outlet is beneficial to the air in the air duct being discharged more smoothly from the outdoor air outlet, improving the exhaust efficiency.

[0074] Specifically, when the air conditioner is in the fresh air mode, the fan in the fresh air duct can be controlled to start. When the fan is started, when there is a guiding structure, the operating state of the guiding structure is adjusted so that the air flow direction blows from the outside into the room; when the fan is started and there is no guiding structure, the air flow direction can be controlled to be sent from the outside into the room by controlling the rotation direction of the fan. For example, fresh air is introduced by the forward rotation of the fan (at this time, the reverse rotation of the fan can discharge indoor air outdoors). When the air conditioner is in the exhaust mode, the fan in the fresh air duct can be controlled to start. When the fan is started, when there is a guiding structure, the operating state of the guiding structure is adjusted so that the air flow direction blows from the indoor environment into the outdoor environment; when the fan is started and there is no guiding structure, the air flow direction can be controlled to be sent from the outside into the room by controlling the rotation direction of the fan. For example, indoor air is discharged outdoors by the reverse rotation of the fan.

[0075] The air conditioner can determine the ventilation mode that the air conditioner currently needs to turn on as the first ventilation mode based on the ventilation instruction input by the user. For example, when the user needs outdoor fresh air to improve the freshness of indoor air, an opening instruction for the fresh air function can be input. At this time, the fresh air mode can be used as the first ventilation mode to control the air conditioner to operate in the fresh air mode; another example is that when the user needs to discharge indoor polluted air outdoors, an opening instruction for the exhaust function can be input. At this time, the exhaust mode can be used as the first ventilation mode to control the air conditioner to operate in the exhaust mode.

[0076] When the air conditioner is in the state of the first ventilation mode, the air conditioner can operate in a cooling mode, a heating mode, or also be in a state of stopping heat exchange.

[0077] Step S20, during the operation of the air conditioner in the first ventilation mode, if there is an opening instruction for the second ventilation mode, control the air conditioner to perform a temperature adjustment operation and control the air conditioner to switch to the second ventilation mode for operation; wherein, the temperature adjustment operation is used to reduce the temperature difference between the air entering the air duct in the second ventilation mode and the air duct.

[0078] The first ventilation mode is one of the fresh air mode and the exhaust mode, and the second ventilation mode is the other of the fresh air mode and the exhaust mode. In the fresh air mode, outdoor air enters the room through the air duct, and in the exhaust mode, indoor air is discharged outdoors through the air duct.

[0079] When the air conditioner is in the fresh air mode, if an opening instruction for the exhaust mode is received, the air conditioner can be controlled to perform a temperature adjustment operation and the air conditioner can be controlled to switch to the exhaust mode for operation.

[0080] When the air conditioner is in the exhaust mode, if an opening instruction for the fresh air mode is received, the air conditioner can be controlled to perform a temperature adjustment operation and the air conditioner can be controlled to switch to the fresh air mode for operation.

[0081] Here, the opening instruction for the second ventilation mode can be input by the user through the controller of the air conditioner based on their actual needs, or can be automatically generated when the air conditioner detects that the air conditions indoors and outdoors reach the set conditions.

[0082] The switching between the fresh air mode and the exhaust mode can be achieved by changing the rotation direction of the fan in the air duct or by means of a flow direction switching structure in the air duct. The airflows before and after the switching between the fresh air mode and the exhaust mode both flow through the same air duct.

[0083] The object of the temperature adjustment operation can be the air in the air duct or the air before entering the air duct, as long as it is ensured that the temperature difference between the air entering the air duct after switching to the second ventilation mode and the temperature of the air duct itself is reduced. Specifically, in this embodiment, the temperature of the air introduced into the air duct in the second ventilation mode is higher than the temperature of the air introduced into the air duct in the first ventilation mode. For example, when an opening instruction for the exhaust mode is received in the fresh air mode of the air conditioner, the temperature adjustment operation can be to lower the temperature of the indoor air before entering the air duct or to raise the temperature of the air in the air duct, so as to avoid the formation of condensed water in the air duct when the high-temperature and high-humidity indoor air is introduced into the relatively low-temperature air duct; another example is that when an opening instruction for the fresh air mode is received in the exhaust mode of the air conditioner and the indoor temperature is lower than the outdoor temperature, the temperature adjustment operation can be to lower the temperature of the outdoor air before entering the air duct or to raise the temperature of the air in the air duct, so as to avoid the formation of condensed water in the air duct when the high-temperature and high-humidity outdoor air is introduced into the relatively low-temperature air duct.

[0084] During the execution of the temperature adjustment operation, the fan in the air duct can be turned on or off.

[0085] Specifically, the air conditioner can be first controlled to perform a temperature adjustment operation, and then switch to the second ventilation mode when it is detected that there is no condensation risk in the air duct; in addition, the temperature adjustment operation and the second ventilation mode can also be executed simultaneously.

[0086] Among them, the temperature adjustment operation can be stopped when there is no condensation risk in the air duct, or can be continuously executed during the operation of the second ventilation mode.

[0087] A control method for an air conditioner provided by an embodiment of the present invention is based on an air conditioner that uses the same air duct to implement a fresh air mode and a ventilation mode. During the operation of the air conditioner in one of the fresh air mode and the exhaust mode, when receiving an instruction to turn on the other ventilation mode among the fresh air mode and the exhaust mode, instead of directly switching to the required ventilation mode for operation, a temperature adjustment operation is also performed. By adjusting the temperature, the temperature difference between the air duct and the air entering the air duct in the required ventilation mode to be turned on is reduced, thereby effectively preventing the generation of condensed water in the air duct due to excessive indoor and outdoor temperature and humidity differences during the fresh air and exhaust switching, avoiding moisture damage to the components in the air duct, and ensuring the normal operation of the components in the air duct.

[0088] Furthermore, in this embodiment, when there is an instruction to turn on the second ventilation mode, the target air volume corresponding to the turn-on instruction can be first determined. If the target air volume is less than the set air volume, the air conditioner can be controlled to perform a temperature adjustment operation and be controlled to switch to the second ventilation mode for operation; if the target air volume is greater than or equal to the set air volume, the temperature adjustment operation may not be performed, and the air conditioner can be directly controlled to switch to the second ventilation mode for operation. Since it is easier to have condensed water in the air duct when the indoor and outdoor temperature difference is too large and the introduced air volume is small after the ventilation switching; when the air volume is large, the air duct can be quickly adjusted to be close to the temperature of the introduced air. Therefore, when it is determined that the target air volume of the second ventilation mode is large, the temperature adjustment operation is increased during the ventilation mode, otherwise the ventilation mode is directly switched, so as to ensure that there is no condensation in the air duct while ensuring the efficiency of the ventilation mode switching.

[0089] Furthermore, in this embodiment, in combination with Figure 1 , based on the settings of the first air cavity, the second air cavity, the first air outlet and the second air outlet of the above-mentioned air conditioner, the specific process of controlling the air conditioner to operate in the fresh air mode in the above steps is as follows: open the first air outlet, close the second air outlet, control the fan to turn on, and when the fan turns on, outdoor air sequentially passes through the outdoor air outlet, the first air cavity, the first air outlet, the second air cavity and the indoor air inlet and then is sent into the room (such as Figure 1the air flow direction indicated by the solid line in). The specific process of controlling the air conditioner to operate in the exhaust mode in the above steps is as follows: close the first air outlet, open the second air outlet, control the fan to start. When the fan starts, the indoor air is discharged outdoors after passing through the indoor air inlet, the second air cavity, the second air outlet, the first air cavity and the outdoor air outlet in sequence (as Figure 1 the air flow direction indicated by the dashed line in). When the target ventilation mode includes the fresh air mode and the exhaust mode, the first air outlet and the second air outlet are alternately controlled in the above two ways to realize the switching of the air conditioner between the fresh air mode and the exhaust mode. Specifically, the opening or closing of the first air outlet and the second air outlet here can be realized by valves arranged on the air outlets. Here, the rotation direction of the fan in the fresh air mode and the exhaust mode can be set to be the same or different according to the positions of the first air outlet and the second air outlet.

[0090] In other embodiments, the fan can be controlled to rotate forward in the fresh air mode, so as to realize the outdoor air entering the air duct and being sent into the room from the indoor air outlet, and the fan can be controlled to rotate reversely in the exhaust mode, so as to realize the indoor air entering the air duct and being discharged outdoors from the outdoor air outlet.

[0091] Further, based on the above embodiments, another embodiment of the control method of the air conditioner of the present application is proposed. In this embodiment, referring to Figure 4 , step S20 includes:

[0092] Step S21, during the operation of the air conditioner in the first ventilation mode, if there is an opening instruction for the second ventilation mode, when the first ventilation mode is the fresh air mode, the second ventilation mode is the exhaust mode, and the air conditioner is in the heating operation, control the fan in the air duct to stop to increase the temperature of the air duct. The temperature adjustment operation includes the fan stopping;

[0093] Step S22, when the fan stops until there is no risk of condensation in the air duct, control the air conditioner to switch to the exhaust mode for operation.

[0094] During the process of the fan stopping, the air outlet where the air duct is connected to the room can be opened or closed, and the air outlet where the air duct is connected to the outdoor can be opened or closed. Specifically, in this embodiment, when an opening instruction for the second ventilation mode is received in the first ventilation mode, open the air outlet where the air duct is connected to the room, close the air outlet where the air duct is connected to the outdoor, and control the fan to start after a set time delay and then stop, which can discharge the remaining cold air in the air duct indoors and accelerate the heating of the air duct. In addition, in other embodiments, when an opening instruction for the second ventilation mode is received in the first ventilation mode, the fan in the air duct can be directly turned off.

[0095] The shutdown duration of the blower can be a preset fixed duration or a duration determined based on the current outdoor temperature or the temperature difference between the indoor and outdoor air temperatures. Among them, the lower the outdoor temperature or the greater the temperature difference between the indoor and outdoor air, the longer the shutdown duration of the blower can be.

[0096] Specifically, when the air conditioner is in heating operation, it indicates that the temperature of the indoor air is higher than that of the outdoor air under the regulation of the air conditioner. Based on this, when the air conditioner needs to switch from the fresh air mode to the exhaust mode, the blower in the air duct shuts down, which can stop the fresh air with a lower outdoor temperature from being sent into the air duct. The temperature in the air duct can rise during the shutdown process of the blower, and the temperature difference between the temperature in the air duct after heating up and the temperature of the indoor air required to be introduced in the exhaust mode decreases, thereby reducing the risk of condensation in the air duct.

[0097] During the shutdown process of the blower, parameters related to condensation in the air duct (such as temperature and / or humidity, etc.) can be monitored, and the shutdown state parameters of the blower (such as shutdown duration, etc.) can also be monitored. When the monitored parameters reach the set conditions corresponding to no condensation risk, the air conditioner can be switched to the exhaust mode for operation, and the indoor air is discharged outdoors through the air duct, thereby ensuring that no condensed water is generated in the air duct when switching from the fresh air mode to the exhaust mode, ensuring that the components in the air duct are not affected by moisture, and ensuring the normal operation of the components.

[0098] Among them, during the process of switching to the exhaust mode, the blower is restarted. After the blower is started, it can operate in a direction opposite to that of the blower in the fresh air mode to switch the flow direction of the air in the air duct and drive the indoor air to be discharged outdoors from the air duct. In addition, when there is a guiding structure for switching the air flow direction in the air duct, the blower can operate in the same direction as the blower in the fresh air mode after being started, and the position change of the guiding structure is used to realize the switching of the air flow direction in the air duct and drive the indoor air to be discharged outdoors from the air duct.

[0099] After switching to the exhaust mode, the blower can operate at a preset fixed speed. Or, the blower can first operate at a speed less than the set speed for a preset duration, and then operate at a speed greater than or equal to the set speed to ensure that a large amount of hot air does not enter the air duct when starting to exhaust, and a small amount of hot air further heats up the air duct. After ensuring that the temperature of the air duct is close to the indoor temperature, the air is exhausted at a large volume, which is beneficial to further improving the anti-condensation effect of the air duct.

[0100] Furthermore, based on any of the above embodiments, another embodiment of the control method of the air conditioner of the present application is proposed. In this embodiment, referring to Figure 5 , step S20 includes:

[0101] Step S23, during the operation of the air conditioner in the first ventilation mode, if there is an opening instruction for the second ventilation mode, when the first ventilation mode is the fresh air mode, the second ventilation mode is the exhaust mode, and the air conditioner is in the heating operation, control the heating module in the air duct to be turned on and control the air conditioner to switch to the exhaust mode for operation. The temperature adjustment operation includes turning on the heating module.

[0102] The air conditioner being in the heating operation indicates that the temperature of the indoor air is higher than that of the outdoor air under the adjustment of the air conditioner. Based on this, when the air conditioner needs to switch from the fresh air mode to the exhaust mode, in addition to the air conditioner switching to the exhaust mode for operation, the heating module in the air duct can also be controlled to be turned on.

[0103] Specifically, the heating module can be turned on before the air conditioner switches to the exhaust mode, or can be turned on synchronously during the process of switching to the exhaust mode. In this embodiment, turning on the heating module synchronously during the process of switching to the exhaust mode is beneficial to improving the switching rate of the air conditioner to the exhaust operation, preventing condensation in the air duct and discharging the indoor polluted air outdoors as soon as possible to ensure air quality.

[0104] In other embodiments, the heating module can also be turned on first, and then the air conditioner can be controlled to switch to the exhaust mode for operation when it is detected that there is no condensation risk in the air duct. The fan in the air duct can be turned on or off during this process. In addition, during this process, the air inlet in the air duct communicating with the indoor can be closed, and the air inlet in the air duct communicating with the outdoor can be opened so that the heated moisture can evaporate and be discharged outdoors through the air inlet communicating with the outdoor.

[0105] After the heating module is turned on, it can operate at a fixed heating power, or can operate at a heating power determined according to the indoor temperature, the outdoor temperature, or the temperature difference between the indoor and outdoor temperatures.

[0106] In this embodiment, during the heating process of the air conditioner, when it is necessary to switch the exhaust mode of the air conditioner from fresh air to exhaust, the air duct is heated by the heating module in the air duct to increase the air duct temperature to reduce the temperature difference between the indoor hot air and the air duct. Therefore, when switching to the exhaust mode, the indoor high-temperature air entering the air duct will not generate condensed water on the inner wall of the air duct due to the alternation of cold and heat, thereby ensuring the dryness of the air duct and ensuring the normal operation of the components in the air duct.

[0107] Further, based on any of the above embodiments, another embodiment of the control method of the air conditioner of the present application is proposed. In this embodiment, referring to Figure 6 , step S20 includes:

[0108] Step S24. During the operation of the air conditioner in the first ventilation mode, if there is an instruction to turn on the second ventilation mode, when the first ventilation mode is the exhaust mode, the second ventilation mode is the fresh air mode, and the air conditioner is in the cooling operation, control the air conditioner to turn on the internal circulation operation and control the air conditioner to switch to the fresh air mode for operation. When the internal circulation operation is turned on, indoor air enters the air duct and mixes with the outdoor air entering the air duct. The temperature adjustment operation includes the internal circulation operation.

[0109] The air conditioner is in the cooling operation, indicating that the temperature of the indoor air is lower than that of the outdoor air under the adjustment of the air conditioner. Based on this, when the air conditioner needs to switch from the exhaust mode to the fresh air mode, in addition to switching the air conditioner to the fresh air mode for operation, the air conditioner can also be controlled to introduce indoor air into the air duct to mix with the high-temperature outdoor fresh air in the air duct, and use the low-temperature indoor air to reduce the temperature of the outdoor fresh air, so as to avoid the air temperature entering the air duct being too high in the fresh air mode, effectively reducing the temperature difference between the temperature of the air duct itself and the temperature of the air introduced in the fresh air mode, and thus effectively preventing condensation in the air duct when switching from the exhaust mode to the fresh air mode in the cooling mode.

[0110] Here, while turning on the internal circulation operation, control the air conditioner to switch to the fresh air mode for operation. During this process, the fan can operate at a preset fixed speed. Alternatively, the fan can first operate at a speed greater than the set speed for a preset duration, and then operate at a speed less than or equal to the set speed to ensure that a large amount of cold air does not enter the air duct when the fresh air is first introduced. The indoor cold air can reduce the temperature of the air entering the air duct while not causing too large a temperature difference between the outdoor air and the indoor air to condense. On this basis, ensure that the air duct temperature is close to the outdoor temperature before introducing the fresh air with a large air volume, which is beneficial to further improving the anti-condensation effect of the air duct.

[0111] It should be noted that in this embodiment, the air inlet for introducing indoor air in the internal circulation operation and the air outlet for sending outdoor air into the room in the fresh air mode are different air outlets.

[0112] It should be noted that when step S20 may include the above step S24, it may simultaneously include step S23, or when step S20 includes the above step S24, it may simultaneously include step S21 and step S22, and the corresponding steps can be executed based on the current ventilation mode and the heat exchange situation of the air conditioner.

[0113] Further, based on any of the above embodiments, another embodiment of the control method of the air conditioner of the present application is proposed. In this embodiment, during the execution of the temperature adjustment operation, state parameters are obtained; the state parameters are parameters characterizing the condensation risk situation of the air duct; when it is determined according to the state parameters that there is no condensation risk in the air duct, control the air conditioner to stop executing the temperature adjustment operation.

[0114] The state parameters specifically include indoor temperature, indoor humidity, outdoor temperature, outdoor humidity, and / or operation characteristic parameters of the temperature adjustment operation (such as the execution duration and / or execution times of the operation), etc.

[0115] Specifically, the target conditions that the state parameters need to reach when there is no condensation risk in the air duct during the process of switching to the second ventilation mode can be preset. Based on this, when the current state parameters match the target conditions, it can be considered that there is no condensation risk in the air duct under the temperature adjustment operation; when the current state parameters do not match the target conditions, it can be considered that there is a condensation risk in the air duct under the temperature adjustment operation.

[0116] Specifically, in this embodiment, the process of obtaining the state parameters is as follows: Detect the first temperature in the air duct and the execution duration of the temperature adjustment operation. The state parameters include the first temperature and the execution duration. The first temperature can be specifically detected in real time by a detection module arranged in the air duct. Start timing when the temperature adjustment operation starts to execute, and use the current timing duration as the execution duration here. Based on this, after obtaining the state parameters, when the first temperature is greater than or equal to the target dew point temperature, or when the execution duration is greater than or equal to the target duration, it is determined that there is no condensation risk in the air duct; wherein, the target dew point temperature is the dew point temperature of the air entering the air duct in the second ventilation mode. Specifically, when the second ventilation mode is the fresh air mode, the target dew point temperature here can be calculated according to the outdoor ambient temperature and outdoor ambient humidity; when the second ventilation mode is the exhaust mode, the target dew point temperature here can be calculated according to the indoor ambient temperature and indoor ambient humidity. The target duration is specifically the minimum duration that the temperature adjustment operation needs to execute when there is no condensation risk in the air duct during the execution process of the temperature adjustment operation preset in advance, which can be a preset fixed parameter or a parameter determined according to the current actual temperature difference and / or humidity difference between indoor and outdoor. When the temperature of the air duct reaches above the target dew point temperature under the temperature adjustment effect, or the execution duration reaches above the target duration, it can indicate that the temperature of the air duct itself is high enough, so as to ensure that even when the air conditioner switches to the second ventilation mode and the temperature and humidity of the introduced air are relatively high, no condensed water will be generated in the air duct.

[0117] In the temperature adjustment operation in the above embodiment, when the fan in the air duct stops running, the state parameters during the stop process of the fan can be detected. When it is determined that there is no condensation risk in the air duct based on the state parameters, the air conditioner can be controlled to switch to the second ventilation mode for operation.

[0118] The temperature adjustment operation in the above embodiments includes that when the heating module in the air duct is turned on, if the heating module is turned on during the process of switching to the second ventilation mode, the state parameters can be detected in the second ventilation mode. When it is determined based on the state parameters that there is no condensation risk in the air duct, the control heating module can be controlled to turn off; or, if the heating module is turned on before switching to the second ventilation mode, the state parameters can be detected before in the second ventilation mode. When it is determined based on the state parameters that there is no condensation risk in the air duct, the control heating module can be controlled to turn off, and after the heating module is turned off, the air conditioner is switched to the second ventilation mode for operation.

[0119] The temperature adjustment operation in the above embodiments includes that when the internal circulation operation is turned on, if the internal circulation operation is turned on during the process of switching to the second ventilation mode, the state parameters can be detected in the second ventilation mode. When it is determined based on the state parameters that there is no condensation risk in the air duct, the control internal circulation operation can be controlled to turn off; or, if the internal circulation operation is turned on before switching to the second ventilation mode, the state parameters can be detected before in the second ventilation mode. When it is determined based on the state parameters that there is no condensation risk in the air duct, the control internal circulation operation can be controlled to turn off, and after the internal circulation operation is turned off, the air conditioner is switched to the second ventilation mode for operation.

[0120] It should be noted that in other embodiments, when it is determined according to the state parameters that there is no condensation risk in the air duct, the temperature adjustment operation can also be maintained and the air conditioner can be controlled to switch to the second ventilation mode for operation.

[0121] In this embodiment, through the detection of the state parameters, when it is determined based on the state parameters that the condensation risk in the air duct is eliminated under the adjustment of the temperature adjustment operation, the temperature adjustment operation is stopped, which is beneficial to preventing condensation in the air duct and avoiding the energy consumption generated by unnecessary temperature adjustment operations.

[0122] Further, based on any of the above embodiments, another embodiment of the control method of the air conditioner of the present application is proposed. In this embodiment, step S20 includes:

[0123] Step S201, during the process of the air conditioner operating in the first ventilation mode, if there is an opening instruction for the second ventilation mode, obtain the indoor temperature, the outdoor temperature, and the target humidity, where the target humidity is the humidity of the air to be introduced into the air duct when the second ventilation mode operates;

[0124] Specifically, when the second ventilation mode is the fresh air mode, the target humidity is the humidity of the outdoor air. When the second ventilation mode is the exhaust mode, the target humidity is the humidity of the indoor air.

[0125] Step S202, determine whether there is a condensation risk in the air duct when the air conditioner switches to the second ventilation mode according to the indoor temperature, the outdoor temperature, and the target humidity;

[0126] The risk levels of condensation in the air duct when switching to the second ventilation mode corresponding to different indoor temperatures, outdoor temperatures, and target humidities are different.

[0127] Step S203: If it is determined that there is a risk of condensation in the air duct when the air conditioner switches to the second ventilation mode, then execute the step of controlling the air conditioner to perform a temperature adjustment operation and controlling the air conditioner to switch to the second ventilation mode.

[0128] Further, after step S202, it further includes:

[0129] Step S204: If it is determined that there is no risk of condensation in the air duct when the air conditioner switches to the second ventilation mode, then control the air conditioner to switch to the second ventilation mode.

[0130] In this embodiment, when it is necessary to switch from the first ventilation mode to the second ventilation mode, first, the indoor and outdoor temperatures and humidities are used to identify whether there will be a risk of condensation in the air duct when switching to the second ventilation mode later. When a condensation risk is identified, a temperature adjustment operation is added during the process of switching to the second ventilation mode. Otherwise, it directly switches to the second ventilation mode to operate, thereby ensuring the prevention of condensation in the air duct while ensuring the switching efficiency of the ventilation mode.

[0131] In this embodiment, step S202 is specifically as follows: when the first target temperature is lower than the first set temperature, the second target temperature is higher than the second set temperature, and the target humidity is higher than the set humidity, it is determined that there is a risk of condensation in the air duct when the air conditioner switches to the second ventilation mode; when the first target temperature is greater than or equal to the first set temperature, or when the second target temperature is less than or equal to the second set temperature, or when the target humidity is less than or equal to the set humidity, it is determined that there is no risk of condensation in the air duct when the air conditioner switches to the second ventilation mode; wherein, the first target temperature is the temperature of the air entering the air duct in the first ventilation mode among the indoor temperature and the outdoor temperature, the second target temperature is the temperature of the air entering the air duct in the second ventilation mode among the indoor temperature and the outdoor temperature, and the first set temperature is lower than the second set temperature. For example, when the first ventilation mode is the fresh air mode, the second ventilation mode is the exhaust mode, and the air conditioner is operating in heating mode, the first target temperature is the outdoor temperature, the second target temperature is the indoor temperature, and the target humidity is the indoor humidity; when the first ventilation mode is the exhaust mode, the second ventilation mode is the fresh air mode, and the air conditioner is operating in cooling mode, the first target temperature is the indoor temperature, the second target temperature is the outdoor temperature, and the target humidity is the outdoor humidity. The first set temperature and the second set temperature are specifically set according to the maximum temperature allowed for the first target temperature and the minimum temperature allowed for the second target temperature when condensation risk occurs in the air duct when switching from the first ventilation mode to the second ventilation mode. In this embodiment, the first set temperature is 5 °C and the second set temperature is 15 °C. In other embodiments, the first set temperature and the second set temperature can also be set to other temperatures according to actual needs. Here, when the air introduced by the first ventilation mode is too low, the temperature of the air introduced by the second ventilation mode is too high and the humidity is too high, it can be considered that condensation water is likely to appear when switching from the first ventilation mode to the second ventilation mode; otherwise, it can be considered that condensation water is not likely to appear when switching from the first ventilation mode to the second ventilation mode, so as to accurately identify the condensation risk in the air duct when switching from the first ventilation mode to the second ventilation mode through the indoor and outdoor temperatures and humidity.

[0132] It should be noted that when judging whether there is a condensation risk in the air duct through the first target temperature, the second target temperature, and the target humidity in this embodiment, if it is determined that there is a condensation risk in the air duct, during the operation of performing the above steps S21 to S24, the air conditioner does not need to reach the above-mentioned cooling or heating state (for example, the air conditioner can stop heat exchange or cooling operation in step S21, and the same applies to other steps), and the temperature difference between the air duct and the temperature of the air introduced when switching to the second ventilation mode can be reduced by stopping the fan, performing the internal circulation operation, or turning on the heating.

[0133] In other embodiments, the temperature difference between indoor and outdoor temperatures can also be directly determined. When the temperature difference is greater than the set temperature difference and the target humidity is greater than the set humidity, it can be determined that there is a risk of condensation in the air duct when switching from the first ventilation mode to the second ventilation mode; otherwise, when the temperature difference is less than or equal to the set temperature difference or the target humidity is less than or equal to the set humidity, it can be determined that there is no risk of condensation in the air duct when switching from the first ventilation mode to the second ventilation mode.

[0134] Further, based on any of the above embodiments, in this embodiment, the air conditioner further includes a partition and a blower. The housing is provided with an outdoor air outlet, an indoor air inlet, and an indoor air outlet. The partition is disposed inside the housing and divides the air duct into a first air chamber and a second air chamber. The partition is provided with a first air outlet and a second air outlet. Both the first air outlet and the second air outlet communicate with the first air chamber and the second air chamber. The outdoor air outlet is disposed in the first air chamber, and the indoor air inlet and the indoor air outlet are both disposed in the second air chamber. The blower is disposed in the second air chamber;

[0135] The steps of controlling the air conditioner to operate in the first ventilation mode include:

[0136] When the first ventilation mode is the fresh air mode, open the first air outlet, close the second air outlet, and control the blower to start. When the blower starts, outdoor air sequentially passes through the outdoor air outlet, the first air chamber, the first air outlet, the second air chamber, and the indoor air inlet and then is sent into the room;

[0137] When the first ventilation mode is the exhaust mode, close the first air outlet, open the second air outlet, and control the blower to start. When the blower starts, indoor air sequentially passes through the indoor air inlet, the second air chamber, the second air outlet, the first air chamber, and the outdoor air outlet and then is discharged outdoors;

[0138] The steps of controlling the air conditioner to switch to the second ventilation mode for operation include:

[0139] When the second ventilation mode is the fresh air mode, open the first air outlet, close the second air outlet, and control the blower to start. When the blower starts, outdoor air sequentially passes through the outdoor air outlet, the first air chamber, the first air outlet, the second air chamber, and the indoor air inlet and then is sent into the room;

[0140] When the second ventilation mode is the exhaust mode, close the first air outlet, open the second air outlet, and control the blower to start. When the blower starts, indoor air sequentially passes through the indoor air inlet, the second air chamber, the second air outlet, the first air chamber, and the outdoor air outlet and then is discharged outdoors.

[0141] Among them, in the exhaust mode, the indoor air outlet can be opened or closed according to actual needs. Among them, when the indoor air outlet is closed, the resistance of the fresh air duct during the exhaust process is reduced, and the exhaust efficiency of the air conditioner is improved.

[0142] Furthermore, when the internal circulation operation needs to be turned on, the indoor air inlet can be opened, and the fan can be controlled to start; when the internal circulation operation is turned off, the indoor air inlet can be closed.

[0143] Furthermore, in the embodiment of the present invention, the first air outlet is arranged on the air inlet side of the fan, and the second air outlet is arranged on the air outlet side of the fan. Define the rotation direction of the fan in the fresh air mode as the first rotation direction, and define the rotation direction of the fan in the exhaust mode as the second rotation direction. The first rotation direction is the same as the second rotation direction. Based on this, the air conditioner can be switched between different ventilation modes without the fan reversing, improving the service life of the fan.

[0144] Furthermore, in order to better understand the related solutions involved in the above air conditioner control method, the following presents two specific applications of the above control method:

[0145] Application 1: The air conditioner turns on the fresh air function and operates in heating mode. Detect the indoor temperature T1, indoor relative humidity H1, and fresh air temperature TX0, and calculate the indoor dew point temperature TL through T1 and H1. During this process, when the air conditioner receives an exhaust start instruction, if the required exhaust air volume setting is the low air volume setting, and TX0 < 5°C, T1 > 15°C, and H1 > 70%, the fan in the air duct can be controlled to stop, and the indoor air outlet can be closed. During the process of the fan stopping, the temperature TX1 detected by the sensor in the air duct and the stopping time t1 of the fan can be detected. If TX1 > TL or t1 > 60s, the target speed can be controlled to exhaust air, the indoor air inlet can be opened, the second air outlet can be opened, and the first air outlet can be closed, so that the indoor air is discharged outdoors through the air duct. If TX0 < 5°C, T1 > 15°C, and H1 > 70% are not all satisfied at the same time, the target speed can be controlled to exhaust air, the indoor air inlet can be opened, the second air outlet can be opened, and the first air outlet can be closed, so that the indoor air is discharged outdoors through the air duct.

[0146] Application 2: The air conditioner turns on the fresh air function and operates in heating mode, detecting the indoor temperature T1, indoor relative humidity H1, and fresh air temperature TX0, and calculating the indoor dew point temperature TL based on T1 and H1. During this process, when the air conditioner receives an exhaust opening instruction, if the required exhaust air gear to be opened is the low gear, and TX0 < 5°C, T1 > 15°C, and H1 > 70%, the PTC in the air duct can be turned on to heat the air duct, the target rotation speed can be controlled to exhaust, the indoor air inlet can be opened, the second air outlet can be opened, and the first air outlet can be closed, so that the indoor air is discharged outdoors through the air duct. During this process, the temperature TX1 detected by the sensor in the air duct and the stop time t1 of the fan can be detected. If TX1 > TL or t1 > 60s, the PTC can be turned off. If TX0 < 5°C, T1 > 15°C, and H1 > 70% are not all satisfied simultaneously, the target rotation speed can be controlled to exhaust, the indoor air inlet can be opened, the second air outlet can be opened, and the first air outlet can be closed, so that the indoor air is discharged outdoors through the air duct.

[0147] In addition, an embodiment of the present invention further provides a computer-readable storage medium, on which a control program for an air conditioner is stored. When the control program for the air conditioner is executed by a processor, the relevant steps of any one of the above-described control methods for the air conditioner are implemented.

[0148] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or system including that element.

[0149] The above serial numbers of the embodiments of the present invention are only for description and do not represent the superiority or inferiority of the embodiments.

[0150] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium as described above (such as ROM / RAM, magnetic disk, optical disc), and includes several instructions for causing a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of the present invention.

[0151] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A control method for an air conditioner, characterized in that, the control method for the air conditioner includes the following steps: Controlling the air conditioner to operate in a first ventilation mode; During the operation of the air conditioner in the first ventilation mode, if there is an opening instruction for the second ventilation mode, controlling the air conditioner to perform a temperature adjustment operation and controlling the air conditioner to switch to the second ventilation mode for operation; Wherein, the temperature adjustment operation is used to reduce the temperature difference between the air entering the air duct of the air conditioner in the second ventilation mode and the air duct. The first ventilation mode is one of a fresh air mode and an exhaust mode, and the second ventilation mode is the other of the fresh air mode and the exhaust mode. In the fresh air mode, outdoor air enters the room through the air duct of the air conditioner, and in the exhaust mode, indoor air is discharged outdoors through the air duct; The step of controlling the air conditioner to perform a temperature adjustment operation and controlling the air conditioner to switch to the second ventilation mode for operation includes: When the first ventilation mode is the exhaust mode, the second ventilation mode is the fresh air mode, and the air conditioner is in a cooling operation, controlling the air conditioner to turn on the internal circulation operation and controlling the air conditioner to switch to the fresh air mode for operation. When the internal circulation operation is turned on, indoor air enters the air duct and mixes with the outdoor air entering the air duct. The temperature adjustment operation includes the internal circulation operation.

2. The control method for an air conditioner according to claim 1, characterized in that, the step of controlling the air conditioner to perform a temperature adjustment operation and controlling the air conditioner to switch to the second ventilation mode for operation includes: When the first ventilation mode is the fresh air mode, the second ventilation mode is the exhaust mode, and the air conditioner is in a heating operation, controlling the fan in the air duct to stop running to increase the temperature of the air duct. The temperature adjustment operation includes the fan stopping; When there is no risk of condensation in the air duct from the time when the fan stops running, controlling the air conditioner to switch to the exhaust mode for operation.

3. The control method for an air conditioner according to claim 1, characterized in that, the step of controlling the air conditioner to perform a temperature adjustment operation and controlling the air conditioner to switch to the second ventilation mode for operation includes: When the first ventilation mode is the fresh air mode, the second ventilation mode is the exhaust mode, and the air conditioner is in a heating operation, controlling the heating module in the air duct to turn on and controlling the air conditioner to switch to the exhaust mode for operation. The temperature adjustment operation includes turning on the heating module.

4. The control method for an air conditioner according to claim 1, characterized in that, after the step of controlling the air conditioner to perform a temperature adjustment operation, it further includes: During the execution of the temperature adjustment operation, obtaining a state parameter; the state parameter is a parameter characterizing the condensation risk situation of the air duct; When it is determined according to the state parameter that there is no condensation risk in the air duct, controlling the air conditioner to stop executing the temperature adjustment operation.

5. The control method for an air conditioner according to claim 4, characterized in that, the step of obtaining the state parameter includes: Detect the first temperature in the air duct and the execution duration of the temperature adjustment operation, where the state parameters include the first temperature and the execution duration; After the step of obtaining the state parameters, the following steps are further included: When the first temperature is greater than or equal to the target dew point temperature, or when the execution duration is greater than or equal to the target duration, it is determined that there is no condensation risk in the air duct; Wherein, the target dew point temperature is the dew point temperature of the air entering the air duct in the second ventilation mode.

6. The control method of an air conditioner according to any one of claims 1 to 5, characterized in that In the process of the air conditioner operating in the first ventilation mode, if there is an opening instruction for the second ventilation mode, the steps of controlling the air conditioner to perform a temperature adjustment operation and controlling the air conditioner to switch to the second ventilation mode for operation include: In the process of the air conditioner operating in the first ventilation mode, if there is an opening instruction for the second ventilation mode, obtain the indoor temperature, outdoor temperature, and target humidity, where the target humidity is the humidity of the air that needs to be introduced into the air duct during the operation of the second ventilation mode; Determine whether there is a condensation risk in the air duct when the air conditioner switches to the second ventilation mode according to the indoor temperature, outdoor temperature, and the target humidity; If it is determined that there is a condensation risk in the air duct when the air conditioner switches to the second ventilation mode, then perform the steps of controlling the air conditioner to perform a temperature adjustment operation and controlling the air conditioner to switch to the second ventilation mode for operation.

7. The control method of an air conditioner according to claim 6, characterized in that After the step of determining whether there is a condensation risk in the air duct when the air conditioner switches to the second ventilation mode according to the indoor temperature, outdoor temperature, and the target humidity, the following steps are further included: If it is determined that there is no condensation risk in the air duct when the air conditioner switches to the second ventilation mode, then control the air conditioner to switch to the second ventilation mode for operation.

8. The control method of an air conditioner according to claim 6, characterized in that The step of determining whether there is a condensation risk in the air duct when the air conditioner switches to the second ventilation mode according to the indoor temperature, outdoor temperature, and the target humidity includes: When the first target temperature is less than the first set temperature, the second target temperature is greater than the second set temperature, and the target humidity is greater than the set humidity, it is determined that there is a condensation risk in the air duct when the air conditioner switches to the second ventilation mode; When the first target temperature is greater than or equal to the first set temperature, or when the second target temperature is less than or equal to the second set temperature, or when the target humidity is less than or equal to the set humidity, it is determined that there is no condensation risk in the air duct when the air conditioner switches to the second ventilation mode; Wherein, the first target temperature is the temperature of the air entering the air duct in the first ventilation mode among the indoor temperature and the outdoor temperature, the second target temperature is the temperature of the air entering the air duct in the second ventilation mode among the indoor temperature and the outdoor temperature, and the first set temperature is less than the second set temperature.

9. An air conditioner, characterized in that, the air conditioner includes: a memory, a processor, and a control program of the air conditioner stored on the memory and executable on the processor. When the control program of the air conditioner is executed by the processor, the steps of the control method of the air conditioner according to any one of claims 1 to 8 are implemented.

10. A computer-readable storage medium, characterized in that, a control program of the air conditioner is stored on the computer-readable storage medium. When the control program of the air conditioner is executed by a processor, the steps of the control method of the air conditioner according to any one of claims 1 to 8 are implemented.

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