Air conditioner control method, device, air conditioner and storage medium

Abstract

The present invention discloses a control method, device, air conditioner, and storage medium for an air conditioner. The method includes: after the air conditioner completes cooling or dehumidification, if it is determined that the user has activated the drying function, controlling the air guide plate of the air conditioner to close, controlling the rotary valve to completely seal the inlet of the first port of the exhaust passage, and controlling the fresh air baffle to completely seal the fresh air inlet chamber; controlling the air conditioner's internal fan to turn on, causing the internal fan to operate at a set internal unit speed, and controlling the air conditioner to enter heating mode and activate and operate the external fan after a first set time; and combining the current pipe temperature of the air conditioner's internal unit heat exchanger, the humidity before drying, and the humidity after drying to jointly control the air conditioner's compressor frequency, the opening degree of the throttling element, and the external fan speed. This solution dries the internal unit heat exchanger in heating mode by jointly controlling the compressor frequency and the external fan speed, ensuring a drying effect and a user-friendly experience.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioners, and specifically relates to a control method, device, air conditioner and storage medium for an air conditioner, and more particularly to an exhaust drying control method, device, air conditioner and storage medium for an air conditioner. Background Art

[0002] Generally, after the air conditioner is cooled or dehumidified, a large amount of condensed water will remain on the evaporator (that is, the air conditioner's internal heat exchanger). The condensed water remaining on the evaporator is prone to breeding bacteria. If it is not dried in time (such as blown dry), it is easy to cause the evaporator and even other parts in the machine to mold, affecting the health of the user.

[0003] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0004] The purpose of the present invention is to provide a control method, device, air conditioner and storage medium for an air conditioner, so as to solve the problem that a large amount of condensed water will remain on the heat exchanger of the indoor unit of the air conditioner after cooling or dehumidification. If it is not dried in time, it will cause the evaporator of the indoor unit of the air conditioner and even other parts of the indoor unit of the air conditioner to mold, affecting the health of the user. After the cooling or dehumidification of the air conditioner is completed, when the air guide plate is closed, the indoor unit heat exchanger of the air conditioner is dried by jointly controlling the compressor frequency of the air conditioner and the speed of the outdoor fan of the air conditioner in the heating mode, which can ensure the drying effect and the user's comfortable experience.

[0005] The present invention provides a control method for an air conditioner, wherein the air conditioner comprises a bottom shell, a fresh air channel and an exhaust channel; a fresh air inlet cavity is provided at a first port of the fresh air channel, a cavity is provided at a second port of the fresh air channel, and a fresh air baffle is provided at a connection between the first port of the fresh air channel and the fresh air inlet cavity; the first port of the exhaust channel is connected to the bottom shell, the second port of the exhaust channel is connected to the cavity of the second port of the fresh air duct, and a rotating valve is provided inside the first port of the exhaust channel; when the fresh air baffle is rotated to a first set position, the fresh air baffle can completely close the fresh air inlet cavity; when the fresh air baffle is rotated to a first set position When the rotary valve is rotated to the second set position, the rotary valve can completely close the inlet of the first port of the exhaust channel; when the fresh air inlet chamber is completely closed and the inlet of the first port of the exhaust channel is completely closed, an exhaust passage can be formed from the bottom shell through the exhaust channel and the cavity of the second port of the fresh air duct to the outside of the room; the control method of the air conditioner comprises: after the cooling mode or dehumidification mode of the air conditioner is completed, determining whether the user of the air conditioner has turned on the drying function of the air conditioner; the drying function of the air conditioner is a function for drying the heat exchanger of the indoor unit of the air conditioner; if it is determined that the When the user has turned on the drying function of the air conditioner, the air guide plate of the air conditioner is controlled to be closed, the rotary valve is controlled to rotate so that the inlet of the first port of the exhaust channel is completely closed, and the fresh air baffle is controlled to rotate so that the fresh air inlet chamber is completely closed; before the drying function of the air conditioner is turned on, the humidity of the indoor heat exchanger of the air conditioner before drying is obtained, which is recorded as the humidity before drying of the indoor heat exchanger of the air conditioner; after the drying function of the air conditioner is turned on, the humidity of the indoor heat exchanger of the air conditioner after drying is obtained, which is recorded as the humidity after drying of the indoor heat exchanger of the air conditioner; and after the drying function of the air conditioner is turned on, the humidity of the indoor heat exchanger of the air conditioner is obtained. the current pipe temperature of the air conditioner; controlling the indoor fan of the air conditioner to start, so that the indoor fan of the air conditioner runs at a set indoor unit speed; after the indoor fan of the air conditioner runs at the set indoor unit speed for a first set period of time, controlling the heating mode of the air conditioner to start and run, and controlling the outdoor fan of the air conditioner to start and run; combining the current pipe temperature of the indoor heat exchanger of the air conditioner, the humidity of the indoor heat exchanger of the air conditioner before drying, and the humidity of the indoor heat exchanger of the air conditioner after drying, jointly controlling the compressor frequency of the air conditioner, the opening degree of the throttling element of the air conditioner, and the speed of the outdoor fan of the air conditioner to achieve drying treatment of the indoor heat exchanger of the air conditioner.

[0006] In some embodiments, the compressor frequency of the air conditioner, the opening degree of the throttling element of the air conditioner, and the speed of the outdoor fan of the air conditioner are jointly controlled in combination with the current pipe temperature of the indoor heat exchanger of the air conditioner, the humidity of the indoor heat exchanger of the air conditioner before drying, and the humidity of the indoor heat exchanger of the air conditioner after drying, so as to achieve drying treatment of the indoor heat exchanger of the air conditioner, including: executing a first heating stage; in the first heating stage, controlling the compressor frequency of the air conditioner to a first set frequency, controlling the speed of the outdoor fan of the air conditioner to a first set outdoor speed, and controlling the speed of the indoor fan of the air conditioner to remain at the set indoor speed; after the first heating stage runs for a second set time, if the If the current pipe temperature of the indoor heat exchanger is greater than or equal to the set pipe temperature of the indoor heat exchanger of the air conditioner, the second heating stage is executed; in the second heating stage, the compressor frequency of the air conditioner is controlled to be reduced to the second set frequency, the speed of the outdoor fan of the air conditioner is controlled to be reduced to the second set outdoor speed, and the speed of the indoor fan of the air conditioner is controlled to remain the set indoor speed; after the second heating stage runs for a third set time, the compressor frequency of the air conditioner, the opening of the throttling element of the air conditioner, and the speed of the outdoor fan of the air conditioner are jointly controlled according to the humidity before drying of the indoor heat exchanger of the air conditioner and the humidity after drying of the indoor heat exchanger of the air conditioner, so as to realize the drying treatment of the indoor heat exchanger of the air conditioner.

[0007] In some embodiments, controlling the compressor frequency of the air conditioner to decrease to a second set frequency includes: first controlling the compressor frequency of the air conditioner to decrease to the second set frequency to obtain the current compressor frequency of the air conditioner; after a set time, within the range of half of the second set frequency to the second set frequency, calculating the correction value of the current compressor frequency of the air conditioner according to the current pipe temperature of the indoor heat exchanger of the air conditioner; determining the difference between the current compressor frequency of the air conditioner and the correction value of the current compressor frequency of the air conditioner as the new current compressor frequency of the air conditioner, and controlling the current compressor frequency of the air conditioner to decrease to the new current compressor frequency of the air conditioner; repeating this cycle to achieve dynamic correction of the current compressor frequency of the air conditioner.

[0008] In some embodiments, calculating the current correction value of the compressor frequency of the air conditioner based on the current pipe temperature of the indoor heat exchanger of the air conditioner includes: recording the difference between the current pipe temperature of the indoor heat exchanger of the air conditioner and the set pipe temperature of the indoor heat exchanger of the air conditioner as the pipe temperature difference of the indoor heat exchanger of the air conditioner; determining the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the previous detection cycle according to the set detection cycle, and determining the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the current detection cycle; determining the product of the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the current detection cycle and a first set calculation coefficient, recording it as a first calculation value; determining the difference between the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the current detection cycle and the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the previous detection cycle, and recording the product of the difference and a second set calculation coefficient as a second calculation value; and using the sum of the first calculation value and the second calculation value as the current correction value of the compressor frequency of the air conditioner.

[0009] In some embodiments, the compressor frequency of the air conditioner, the opening degree of the throttling element of the air conditioner, and the speed of the outdoor fan of the air conditioner are jointly controlled based on the humidity of the indoor heat exchanger of the air conditioner before drying and the humidity of the indoor heat exchanger of the air conditioner after drying to achieve drying treatment of the indoor heat exchanger of the air conditioner, including: determining whether the absolute value of the difference between the humidity of the indoor heat exchanger of the air conditioner before drying and the humidity of the indoor heat exchanger of the air conditioner after drying is less than or equal to a set humidity, the set humidity being a set ratio of the humidity of the indoor heat exchanger of the air conditioner before drying ; If it is determined that the absolute value of the difference between the humidity of the indoor heat exchanger of the air conditioner before drying and the humidity of the indoor heat exchanger of the air conditioner after drying is less than or equal to the set humidity, the second heating stage is continued to be executed; if it is determined that the absolute value of the difference between the humidity of the indoor heat exchanger of the air conditioner before drying and the humidity of the indoor heat exchanger of the air conditioner after drying is greater than the set humidity, the heating mode of the air conditioner is controlled to end, the outdoor fan of the air conditioner is controlled to end, and the indoor fan of the air conditioner is controlled to continue to run according to the set indoor unit for the first set time, and then the air conditioner is controlled to shut down.

[0010] In accordance with the above method, the present invention provides a control device for an air conditioner, wherein the air conditioner comprises a bottom shell, a fresh air duct and an exhaust duct; a fresh air inlet cavity is provided at the first port of the fresh air duct, a cavity is provided at the second port of the fresh air duct, and a fresh air baffle is provided at the connection between the first port of the fresh air duct and the fresh air inlet cavity; the first port of the exhaust duct is connected to the bottom shell, the second port of the exhaust duct is connected to the cavity at the second port of the fresh air duct, and a rotary valve is provided inside the first port of the exhaust duct; when the fresh air baffle is rotated to a first set position When the fresh air inlet chamber is completely closed, the fresh air baffle can completely close the fresh air inlet chamber; when the rotary valve is rotated to the second set position, the rotary valve can completely close the inlet of the first port of the exhaust channel; when the fresh air inlet chamber is completely closed and the inlet of the first port of the exhaust channel is completely closed, an exhaust passage can be formed from the bottom shell through the exhaust channel and the cavity of the second port of the fresh air duct to the outdoors; the control device of the air conditioner includes: a control unit configured to determine whether the user of the air conditioner has turned on the air conditioner after the cooling mode or dehumidification mode of the air conditioner ends. The drying function of the air conditioner is a function for drying the heat exchanger of the indoor unit of the air conditioner; the control unit is further configured to, if it is determined that the user of the air conditioner has turned on the drying function of the air conditioner, control the air guide plate of the air conditioner to be closed, control the rotary valve to rotate so that the inlet of the first port of the exhaust channel is completely closed, and control the fresh air baffle to rotate so that the fresh air inlet cavity is completely closed; the acquisition unit is configured to, before the drying function of the air conditioner is turned on, obtain the humidity of the heat exchanger of the indoor unit of the air conditioner before drying, and record it as the humidity before drying of the heat exchanger of the indoor unit of the air conditioner; in After the drying function of the air conditioner is turned on, the humidity of the indoor heat exchanger of the air conditioner after drying is obtained, and recorded as the humidity after drying of the indoor heat exchanger of the air conditioner; and after the drying function of the air conditioner is turned on, the current pipe temperature of the indoor heat exchanger of the air conditioner is obtained; the control unit is further configured to control the indoor fan of the air conditioner to turn on, so that the indoor fan of the air conditioner runs at a set indoor speed; the control unit is further configured to control the heating mode of the air conditioner to turn on and run, and control the outdoor fan of the air conditioner to turn on and run, after the indoor fan of the air conditioner runs at the set indoor speed for a first set time period;The control unit is further configured to jointly control the compressor frequency of the air conditioner, the opening degree of the throttling element of the air conditioner, and the speed of the outdoor fan of the air conditioner based on the current pipe temperature of the indoor heat exchanger of the air conditioner, the humidity of the indoor heat exchanger of the air conditioner before drying, and the humidity of the indoor heat exchanger of the air conditioner after drying, so as to achieve drying of the indoor heat exchanger of the air conditioner.

[0011] In some embodiments, the control unit, in combination with the current pipe temperature of the indoor heat exchanger of the air conditioner, the humidity of the indoor heat exchanger of the air conditioner before drying, and the humidity of the indoor heat exchanger of the air conditioner after drying, jointly controls the compressor frequency of the air conditioner, the opening degree of the throttling element of the air conditioner, and the speed of the outdoor fan of the air conditioner to achieve drying treatment of the indoor heat exchanger of the air conditioner, including: executing a first heating stage; in the first heating stage, controlling the compressor frequency of the air conditioner to be a first set frequency, controlling the speed of the outdoor fan of the air conditioner to be a first set outdoor speed, and controlling the speed of the indoor fan of the air conditioner to remain at the set indoor speed; after the first heating stage runs for a second set time, if the air conditioner If the current pipe temperature of the indoor heat exchanger of the air conditioner is greater than or equal to the set pipe temperature of the indoor heat exchanger of the air conditioner, the second heating stage is executed; in the second heating stage, the compressor frequency of the air conditioner is controlled to be reduced to the second set frequency, the speed of the outdoor fan of the air conditioner is controlled to be reduced to the second set outdoor speed, and the speed of the indoor fan of the air conditioner is controlled to remain the set indoor speed; after the second heating stage runs for a third set time, the compressor frequency of the air conditioner, the opening degree of the throttling element of the air conditioner, and the speed of the outdoor fan of the air conditioner are jointly controlled according to the humidity before drying of the indoor heat exchanger of the air conditioner and the humidity after drying of the indoor heat exchanger of the air conditioner, so as to realize the drying treatment of the indoor heat exchanger of the air conditioner.

[0012] In some embodiments, the control unit controls the compressor frequency of the air conditioner to be reduced to a second set frequency, including: first controlling the compressor frequency of the air conditioner to be reduced to the second set frequency to obtain the current compressor frequency of the air conditioner; after a set time, within the range of half of the second set frequency to the second set frequency, calculating the correction value of the current compressor frequency of the air conditioner according to the current pipe temperature of the indoor heat exchanger of the air conditioner; determining the difference between the current compressor frequency of the air conditioner and the correction value of the current compressor frequency of the air conditioner as the new current compressor frequency of the air conditioner, and controlling the current compressor frequency of the air conditioner to be reduced to the new current compressor frequency of the air conditioner; repeating this cycle to achieve dynamic correction of the current compressor frequency of the air conditioner.

[0013] In some embodiments, the control unit calculates the current correction value of the compressor frequency of the air conditioner based on the current pipe temperature of the indoor heat exchanger of the air conditioner, including: recording the difference between the current pipe temperature of the indoor heat exchanger of the air conditioner and the set pipe temperature of the indoor heat exchanger of the air conditioner as the pipe temperature difference of the indoor heat exchanger of the air conditioner; determining the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the previous detection cycle according to the set detection cycle, and determining the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the current detection cycle; determining the product of the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the current detection cycle and a first set calculation coefficient, recording it as a first calculation value; determining the difference between the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the current detection cycle and the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the previous detection cycle, and multiplying the difference by a second set calculation coefficient as a second calculation value; and using the sum of the first calculation value and the second calculation value as the current correction value of the compressor frequency of the air conditioner.

[0014] In some embodiments, the control unit jointly controls the compressor frequency of the air conditioner, the opening degree of the throttling element of the air conditioner, and the speed of the outdoor fan of the air conditioner according to the humidity of the indoor heat exchanger of the air conditioner before drying and the humidity of the indoor heat exchanger of the air conditioner after drying, so as to achieve drying treatment of the indoor heat exchanger of the air conditioner, including: determining whether the absolute value of the difference between the humidity of the indoor heat exchanger of the air conditioner before drying and the humidity of the indoor heat exchanger of the air conditioner after drying is less than or equal to the set humidity, the set humidity being the humidity of the indoor heat exchanger of the air conditioner before drying. Set ratio; if it is determined that the absolute value of the difference between the humidity of the indoor heat exchanger of the air conditioner before drying and the humidity of the indoor heat exchanger of the air conditioner after drying is less than or equal to the set humidity, then continue to execute the second heating stage; if it is determined that the absolute value of the difference between the humidity of the indoor heat exchanger of the air conditioner before drying and the humidity of the indoor heat exchanger of the air conditioner after drying is greater than the set humidity, then control the heating mode of the air conditioner to end operation, control the outdoor fan of the air conditioner to end operation, and control the indoor fan of the air conditioner to continue to run according to the set indoor unit for the first set time, and then control the air conditioner to shut down.

[0015] Matching the above device, the present invention provides an air conditioner on another aspect, comprising: the control device of the air conditioner described above.

[0016] In accordance with the above method, the present invention further provides a storage medium, which includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the above-mentioned air conditioner control method.

[0017] Therefore, the solution of the present invention is to set a drying function for the air conditioner having a fresh air duct and an exhaust duct (such as the exhaust duct 3), and to set a fresh air baffle (such as the fresh air baffle 4) at the connection between the fresh air duct and the fresh air inlet cavity of the fresh air duct to control the opening and closing of the fresh air inlet of the fresh air duct, and to set a rotary valve (such as the rotary valve 2) at the inlet of the exhaust duct of the air conditioner to control the opening and closing of the inlet of the exhaust duct; after the cooling or dehumidification of the air conditioner is completed, if the user chooses to turn on the drying function of the air conditioner, the air guide plate of the air conditioner is closed, the rotary valve is rotated to the position of closing the inlet of the exhaust duct, that is, the inlet of the exhaust duct is closed, and the fresh air baffle is rotated to the position of closing the fresh air inlet of the fresh air duct, that is, the fresh air The fresh air inlet of the channel is closed; then, after the internal fan is turned on to supply air at a low speed for a certain period of time, the heating mode of the air conditioner is turned on, the external fan is turned on, and the compressor frequency, external fan speed and the opening of the throttling element are jointly controlled in the heating mode until the humidity of the environment where the internal heat exchanger of the air conditioner is located drops to the target humidity range, the heating mode of the air conditioner is stopped, the external fan is turned off, and the internal fan continues to supply air for a certain period of time before being shut down. Thus, after the cooling or dehumidification of the air conditioner is completed, when the air guide plate is closed, the internal heat exchanger of the air conditioner is dried by jointly controlling the compressor frequency of the air conditioner and the external fan speed of the air conditioner in the heating mode, which can ensure the drying effect and the user's comfortable experience.

[0018] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention.

[0019] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 1 is a flow chart of an embodiment of a method for controlling an air conditioner according to the present invention;

[0021] Figure 2 This is a flow chart of an embodiment of the method of the present invention for jointly controlling the compressor frequency, the opening of the throttling element, and the speed of the external fan in combination with the current tube temperature of the internal heat exchanger and the humidity before and after drying;

[0022] Figure 3 2. It is a flow chart of an embodiment of the method of the present invention for controlling the compressor frequency of the air conditioner to decrease to a second set frequency;

[0023] Figure 4 1. A flow chart of an embodiment of the method of the present invention for calculating a current correction value of the compressor frequency of the air conditioner according to the current pipe temperature of the indoor heat exchanger of the air conditioner;

[0024] Figure 5 This is a flow chart of an embodiment of the method of the present invention for jointly controlling the compressor frequency, the opening of the throttling element, and the speed of the external fan in combination with the humidity before and after drying of the internal heat exchanger;

[0025] Figure 6 A schematic structural diagram of an embodiment of a control device for an air conditioner according to the present invention;

[0026] Figure 7 Schematic diagram of the structure of an air conditioner according to an embodiment of the present invention;

[0027] Figure 8 Schematic diagram of the structure of the exhaust duct mechanism of the air conditioner of the present invention in different states;

[0028] Figure 9 1 is a flow chart of an embodiment of an exhaust drying control method for an air conditioner according to the present invention, and specifically is a flow chart of a drying function control method for an air conditioner.

[0029] In conjunction with the accompanying drawings, the reference numerals in the embodiments of the present invention are as follows:

[0030] 1- bottom shell; 2- rotating valve; 3- exhaust duct; 4- fresh air baffle; 5- fresh air connector; 6- fresh air inlet chamber; 7- exhaust duct assembly; 8- valve plate of rotating valve; 9- upper duct; 10- lower duct; S1- first position; S2- second position; 102- acquisition unit; 104- control unit. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] After the air conditioner is cooled or dehumidified, a large amount of condensed water will remain on the indoor heat exchanger of the air conditioner. If it is not dried in time, it will cause the indoor evaporator of the air conditioner and even other parts inside the air conditioner to mold, affecting the health of the user. In some solutions, the rotation of the fan is controlled to dry the indoor heat exchanger of the air conditioner after the air conditioner is cooled or dehumidified, but the drying effect is limited and it will still cause the indoor evaporator of the air conditioner and even other parts inside the air conditioner to mold, affecting the health of the user.

[0033] The applicant of the present invention has attempted to provide an air conditioner with a drying function. Specifically, after the air conditioner has finished cooling or dehumidifying, the evaporator (i.e., the heat exchanger in the air conditioner's indoor unit) is heated, and the condensed water on the evaporator is then blown away by the air conditioner's indoor unit fan. However, during this drying function, the air guide plate of the air conditioner's indoor unit is open, and the air conditioner's indoor unit fan needs to maintain a high speed, which generates a lot of noise. In addition, the air conditioner blows out hot air directly after cooling or dehumidifying, which can easily give the user the illusion that the air conditioner has not been shut down in time and that hot air is being blown out after cooling or dehumidifying, resulting in a poor user comfort experience. Furthermore, after the air conditioner has finished cooling or dehumidifying, if the air guide plate is turned to the anti-direct blowing position or is simply closed, the internal pressure of the air conditioner cannot be released in time, which can easily cause the internal pressure of the air conditioner to be excessive, resulting in unstable operation of the air conditioner compressor and ultimately causing the air conditioner to shut down for protection, which still results in a poor user comfort experience.

[0034] Considering that the condensed water remaining on the evaporator of an air conditioner after cooling or dehumidification is generally prone to bacterial growth, the drying effect and user experience of the drying technology or drying control methods used in related solutions are poor. Therefore, the solution of the present invention proposes an air conditioner control method, specifically a new air conditioner exhaust drying control method, which dries the air conditioner's indoor heat exchanger after cooling or dehumidification. During the drying process, the air guide plate is closed, which not only improves the drying effect but also improves the user's comfort experience, thereby improving the reliability of the air conditioner's drying control function.

[0035] According to an embodiment of the present invention, a method for controlling an air conditioner is provided. Figure 1The following is a flow chart illustrating an embodiment of the method of the present invention. The air conditioner comprises a bottom housing 1, a fresh air duct, and an exhaust duct 3. A fresh air inlet cavity 6 is provided at the first end of the fresh air duct, and a cavity is provided at the second end of the fresh air duct. A fresh air baffle 4 is provided at the connection between the first end of the fresh air duct and the fresh air inlet cavity 6. The first end of the exhaust duct 3 communicates with the bottom housing, while the second end of the exhaust duct 3 communicates with the cavity at the second end of the fresh air duct. A rotary valve 2 is provided within the first end of the exhaust duct 3. When the fresh air baffle 4 is rotated to a first set position, it can completely block the fresh air inlet cavity 6. When the rotary valve 2 is rotated to a second set position, it can completely block the inlet of the first end of the exhaust duct 3. With the fresh air inlet cavity 6 and the inlet of the first end of the exhaust duct 3 completely blocked, an exhaust passage is formed from the bottom housing 1 through the cavity of the exhaust duct 3 and the second end of the fresh air duct, leading to the outside of the room. Among them, the first setting position is the position of the fresh air baffle 4 when the fresh air inlet chamber 6 is completely closed, and the second setting position is the position of the rotating valve 2 when the inlet of the first port of the exhaust channel 3 is completely closed. Figure 8 The second position S2 in .

[0036] Specifically, Figure 7 FIG. 1 is a structural diagram of an embodiment of an air conditioner of the present invention. Figure 8 The diagram of the structure of the exhaust duct mechanism of the air conditioner of the present invention in different states. To solve the problem of water vapor inside the air conditioner (i.e. the water vapor problem in the heat exchanger of the air conditioner), the exhaust drying control method of the air conditioner provided by the solution of the present invention is suitable for Figure 7 and Figure 8 The air conditioner shown is also applicable to the air conditioner with application number 2022115780528 previously applied by the applicant.

[0037] like Figure 7 and Figure 8 The air conditioner shown has a bottom shell 1, a fresh air duct assembly, and an exhaust duct assembly 7. The fresh air duct assembly includes a fresh air motor, a fresh air baffle 4, a fresh air duct, and a fresh air inlet chamber 6. One end of the fresh air duct is connected to the fresh air inlet chamber 6, and the fresh air inlet chamber 6 is connected to the outside. The other end of the fresh air duct is connected to a cavity located on the side of the fresh air duct and connected to the fresh air channel. The fresh air baffle 4 is provided at the connection between the fresh air duct and the fresh air inlet chamber 6. The fresh air motor is connected to the fresh air baffle 4 and is used to drive the fresh air baffle 4 to rotate via the fresh air motor to control the connection between the fresh air duct and the fresh air inlet chamber 6. A fresh air connector 5 is provided at the bend of the fresh air duct.

[0038] The exhaust duct assembly 7 includes an exhaust duct 3, a drive motor, and a rotary valve 2. The exhaust duct 3 includes an upper duct 9 and a lower duct 10. One end of the exhaust duct 3 is connected to the bottom shell 1, and the other end of the exhaust duct 3 is connected to the cavity on the side of the fresh air duct. The rotary valve 2 is arranged in the exhaust duct 3. The drive motor is connected to the connecting shaft of the rotary valve 2. The rotary valve 2 is used to control the rotation of the rotary valve 2 by the drive motor to open and close the exhaust duct 3. For example, when the rotary valve 2 is in the first position S1 in the exhaust duct 3, the inlet of the exhaust duct 3 is closed. When the rotary valve 2 is in the second position S2 in the exhaust duct 3, the inlet of the exhaust duct 3 is opened.

[0039] See also Figure 7 and Figure 8 In the example shown, when the air conditioner is turned off or the anti-odor function is disabled, valve 2 is rotated parallel to the inlet of exhaust duct 3 (e.g., valve 2 is in the first position S1 in exhaust duct 3), completely sealing the inlet of exhaust duct 3 and preventing air from inside the air conditioner unit from being discharged through exhaust duct 3. When the air conditioner's drying function is enabled, valve 2 is rotated a certain angle (e.g., valve 2 is in the second position S2 in exhaust duct 3), completely sealing fresh air baffle 4 from fresh air inlet chamber 6. This creates a passage between the interior of the air conditioner unit and the outdoors, such as a passage connecting the bottom housing 1 through exhaust duct 3, the cavity on the side of the fresh air duct, and the fresh air duct to the outdoors. By closing the air guide plate and turning on the air conditioner's internal and external fans, moisture in the air inside the air conditioner unit can be discharged to the outdoors through the exhaust duct.

[0040] If the inside of the air conditioner is relatively humid, after a certain period of time, it is easy to produce odor inside the air conditioner. Figure 7 and Figure 8 The illustrated air conditioner has an odor prevention function. When the rotary valve 2 is in the first position S1 in the exhaust duct 3, the air conditioner's odor prevention passage is closed. When the rotary valve 2 is in the second position S2 in the exhaust duct 3, the air conditioner's odor prevention passage is opened. When condensed water vapor from the evaporator in the air conditioner's indoor unit is discharged through the odor prevention passage, the interior of the air conditioner remains dry, thereby preventing the generation of odors within the indoor unit. Thus, when the odor prevention passage is open, the air conditioner's drying function is achieved.

[0041] like Figure 8As shown, the exhaust duct assembly 7 comprises an upper duct 9, a lower duct 10, and a rotary valve 2, which has a valve disc 8. When the valve disc 8 of the rotary valve 2 is in a first position S1, both the upper duct 9 and the lower duct 10 are closed. When the valve disc 8 of the rotary valve 2 is in a second position S2, both the upper duct 9 and the lower duct 10 are connected to the fresh air duct, that is, to the outside. Preferably, when the rotary valve 2 is rotated at an angle of 20° to 160°, both the upper duct 9 and the lower duct 10 are connected to the fresh air duct.

[0042] The air conditioner control method includes steps S110 to S160.

[0043] In step S110, when the air conditioner needs to be shut down after the cooling mode or the dehumidification mode is completed, it is determined whether the user of the air conditioner has turned on the drying function of the air conditioner. The drying function of the air conditioner is a function for drying the heat exchanger of the indoor unit of the air conditioner.

[0044] At step S120, if it is determined that the user of the air conditioner has turned on the drying function of the air conditioner, the air guide plate of the air conditioner is controlled to be closed, the rotary valve 2 is controlled to rotate so that the inlet of the first port of the exhaust channel 3 is completely closed, and the fresh air baffle 4 is controlled to rotate so that the fresh air inlet chamber 6 is completely closed. For example, the rotary valve 2 is controlled to rotate to the second set position to completely close the inlet of the first port of the exhaust channel 3, and the fresh air baffle 4 is controlled to rotate to the first set position to completely close the fresh air inlet chamber 6, so as to form an exhaust passage from the bottom shell 1 through the cavity of the exhaust channel 3 and the second port of the fresh air duct to the outdoors.

[0045] In step S130, before the drying function of the air conditioner is turned on, the humidity of the indoor heat exchanger of the air conditioner before drying is obtained, which is recorded as the humidity before drying of the indoor heat exchanger of the air conditioner, such as humidity d 干燥前 After the drying function of the air conditioner is turned on, the humidity of the air conditioner's internal heat exchanger after drying is obtained, which is recorded as the humidity after drying of the air conditioner's internal heat exchanger, such as humidity d 干燥后 And, after the drying function of the air conditioner is turned on, the current pipe temperature of the heat exchanger of the air conditioner is obtained, such as the current internal pipe temperature T 内管温 .

[0046] At step S140, the indoor fan of the air conditioner is controlled to be turned on, so that the indoor fan of the air conditioner operates at a set indoor speed. The set indoor speed is less than or equal to the speed of the indoor fan of the air conditioner at a medium or high wind speed. The set indoor speed is such as speed r1.

[0047] At step S150, after the indoor fan of the air conditioner is operated at the set indoor unit speed for a first set time, while the indoor fan of the air conditioner continues to operate at the set indoor unit speed, the heating mode of the air conditioner is controlled to be turned on and operated, and the outdoor fan of the air conditioner is controlled to be turned on and operated, so that the heating mode of the air conditioner and the outdoor fan of the air conditioner continue to operate at the set indoor unit speed for a set total heating time. The first set time is time t0, and the set total heating time is time ttotal.

[0048] At step S160, in the process of making the heating mode of the air conditioner and the external fan of the air conditioner run for the set total heating time, the compressor frequency of the air conditioner, the opening degree of the throttling element of the air conditioner, and the speed of the external fan of the air conditioner are jointly controlled in combination with the current pipe temperature of the indoor heat exchanger of the air conditioner, the humidity of the indoor heat exchanger of the air conditioner before drying, and the humidity of the indoor heat exchanger of the air conditioner after drying, so as to achieve drying treatment of the indoor heat exchanger of the air conditioner.

[0049] Specifically, Figure 9 FIG1 is a flow chart of an embodiment of the method for controlling the exhaust gas drying of an air conditioner of the present invention, specifically a flow chart of a method for controlling the drying function of an air conditioner. Figure 9 As shown, the exhaust drying control method of the air conditioner includes:

[0050] Step 1: When the air conditioner needs to be shut down after cooling or dehumidifying, the user can choose to manually turn on or automatically turn on the air conditioner's drying function. If the user does not choose the drying function, the air conditioner will be shut down directly. If the user chooses to turn on the drying function, proceed to step 2.

[0051] Step 2: When the drying function of the air conditioner is turned on, the air guide plate and the fresh air damper 4 of the air conditioner are controlled to be directly closed, and the valve plate 8 of the rotating valve 2 is rotated to a certain angle to the second position S2, and then step 3 is executed.

[0052] Step 3: Turn on the air conditioner's indoor fan and set it to deliver air at a speed of r1 for a time of t0 minutes, where t0 is ≥ 2 minutes. Then, execute steps 4 through 7 to dry the air conditioner's indoor heat exchanger. In steps 4 through 7, the air conditioner's compressor frequency and the air conditioner's outdoor fan speed are jointly controlled to dry the air conditioner's indoor heat exchanger.

[0053] The solution of the present invention proposes an exhaust drying control method for an air conditioner. After the cooling or dehumidification of the air conditioner is completed, the internal heat exchanger of the air conditioner is dried by jointly controlling the compressor frequency of the air conditioner and the speed of the air conditioner's external fan. During the entire drying process, a high temperature can be maintained without the problem of the air conditioner being shut down due to overheating protection. In addition, during the drying process, the air guide plate is closed, which not only improves the drying effect but also provides a better user comfort experience, thereby making the reliability of the drying control function of the air conditioner better.

[0054] In some embodiments, in step S160, in the process of making the heating mode of the air conditioner and the external fan of the air conditioner run for the set total heating time, the compressor frequency of the air conditioner, the opening degree of the throttling element of the air conditioner, and the speed of the external fan of the air conditioner are jointly controlled in combination with the current pipe temperature of the indoor heat exchanger of the air conditioner, the humidity before drying of the indoor heat exchanger of the air conditioner, and the humidity after drying of the indoor heat exchanger of the air conditioner to realize the specific process of drying the indoor heat exchanger of the air conditioner, see the following exemplary description.

[0055] The following combination Figure 2 The flowchart of an embodiment of the method of the present invention for jointly controlling the compressor frequency, the opening of the throttling element, and the speed of the external fan in combination with the current tube temperature of the indoor heat exchanger and the humidity before and after drying is shown, further illustrating the specific process of jointly controlling the compressor frequency, the opening of the throttling element, and the speed of the external fan in combination with the current tube temperature of the indoor heat exchanger and the humidity before and after drying in step S160, including: steps S210 to S230.

[0056] Step S210: Execute a first heating phase. During the first heating phase, the compressor frequency of the air conditioner is controlled to a first set frequency, the speed of the outdoor fan of the air conditioner is controlled to a first set outdoor unit speed, and the speed of the indoor fan of the air conditioner is controlled to remain at the set indoor unit speed. The first set frequency is, for example, frequency f1, and the first set outdoor unit speed is, for example, speed R1.

[0057] Step S220: After the first heating phase runs for a second set duration, if the current pipe temperature of the indoor heat exchanger of the air conditioner is greater than or equal to the set pipe temperature of the indoor heat exchanger, the second heating phase is executed. In the second heating phase, the compressor frequency of the air conditioner is controlled to decrease to a second set frequency, the speed of the outdoor fan of the air conditioner is controlled to decrease to a second set outdoor speed, and the speed of the indoor fan of the air conditioner is controlled to remain at the set indoor speed. The second set frequency is, for example, frequency f2, and the second set outdoor speed is, for example, speed R2. Of course, if the current pipe temperature of the indoor heat exchanger of the air conditioner is still less than the set pipe temperature after the first heating phase runs for a second set duration, the first heating phase is continued until the current pipe temperature of the indoor heat exchanger of the air conditioner is greater than or equal to the set pipe temperature, at which point the second heating phase is executed. The second set duration is, for example, time t1, and the set pipe temperature is, for example, temperature T1. The second set outdoor speed is greater than or equal to half of the first set outdoor speed and less than or equal to the first set outdoor speed.

[0058] Specifically, if Figure 9 As shown, the exhaust drying control method of the air conditioner further includes:

[0059] Step 4: In the first heating stage, the heating mode of the air conditioner is turned on for a heating time of t1. In order to reduce the temperature of the indoor heat exchanger of the air conditioner to T 内管温 Rapidly raise the temperature to a target high temperature, such as a high temperature of about 56°C, to quickly evaporate the condensed water on the heat exchanger, i.e., the evaporator, of the air conditioner indoor unit, turn on the compressor and the outdoor fan of the air conditioner, control the compressor frequency of the air conditioner to be frequency f1, control the opening of the throttling element of the air conditioner to be opening k, and control the speed of the outdoor fan to be speed R1.

[0060] In the first heating stage, when the temperature of the indoor heat exchanger of the air conditioner is determined to be T 内管温 When the set temperature T1 is reached (e.g., 45°C ≤ set temperature T1 ≤ 54°C), step 5 is executed to enter the second heating stage; otherwise, the heating and control of the first heating stage are continued.

[0061] Step 5: In the second heating stage, the air conditioner continues to heat in the heating mode, and the heating time is t2 = (t-t1) min, where t is the set total heating time.

[0062] In the second heating stage, the compressor frequency needs to be reduced to frequency f2.

[0063] During the second heating phase, the throttling element is maintained at an opening degree k, and the speed of the outdoor fan is reduced to speed R2, with R1 / 2 ≤ R2 ≤ R1. This setting of R2 ensures that the outdoor fan speed remains within a reasonable range. If the outdoor fan speed is too slow, the internal temperature rises too quickly, while if the outdoor fan speed is too high, the internal temperature does not rise at all. Steps 6 and 7 are then executed to jointly control the compressor frequency, the opening degree of the throttling element, and the speed of the outdoor fan based on the pre-drying humidity and post-drying humidity of the air conditioner's indoor heat exchanger, thereby drying the indoor heat exchanger. Because restarting the fan at a higher speed after shutting down the air conditioner produces significant noise, the indoor fan speed is maintained at speed r1 throughout the drying process, with speed r1 ≤ medium-high speed. At medium-high speeds, the noise level is relatively low.

[0064] In some embodiments, the specific process of controlling the compressor frequency of the air conditioner to decrease to the second set frequency in the second heating stage in step S220 is described in the following exemplary embodiments.

[0065] The following combination Figure 3 The flowchart of an embodiment of the method of the present invention for controlling the compressor frequency of the air conditioner to be reduced to the second set frequency further illustrates the specific process of controlling the compressor frequency of the air conditioner to be reduced to the second set frequency in step S220, including: steps S310 to S330.

[0066] In step S310, the air conditioner compressor frequency is first controlled to decrease to a second set frequency to obtain the current air conditioner compressor frequency. After a set time, a correction value for the current air conditioner compressor frequency is calculated based on the current pipe temperature of the air conditioner's indoor heat exchanger within a range from half the second set frequency to the second set frequency.

[0067] In step S320, the difference between the current compressor frequency of the air conditioner and the correction value of the current compressor frequency of the air conditioner is determined as the new current compressor frequency of the air conditioner, and the current compressor frequency of the air conditioner is controlled to be reduced to the new current compressor frequency of the air conditioner.

[0068] Step S330 is repeated in this way to achieve dynamic correction of the current compressor frequency of the air conditioner.

[0069] Specifically, if Figure 9 As shown, the exhaust drying control method for the air conditioner further includes: in step 5, in the second heating stage, after reducing the compressor frequency to frequency f2, the compressor frequency is corrected after a certain period of time.

[0070] In some embodiments, the specific process of calculating the current correction value of the compressor frequency of the air conditioner according to the current pipe temperature of the indoor heat exchanger of the air conditioner in step S310 is described in the following exemplary embodiments.

[0071] The following combination Figure 4 The flowchart of an embodiment of the method of the present invention for calculating the current correction value of the compressor frequency of the air conditioner based on the current pipe temperature of the indoor heat exchanger of the air conditioner further illustrates the specific process of calculating the current correction value of the compressor frequency of the air conditioner based on the current pipe temperature of the indoor heat exchanger of the air conditioner in step S310, including: steps S410 to S440.

[0072] In step S410, the difference between the current pipe temperature of the indoor heat exchanger of the air conditioner and the set pipe temperature of the indoor heat exchanger of the air conditioner is recorded as the pipe temperature difference of the indoor heat exchanger of the air conditioner.

[0073] Step S420 determines the pipe temperature difference of the heat exchanger in the air conditioner detected in the previous detection cycle, and determines the pipe temperature difference of the heat exchanger in the air conditioner detected in the current detection cycle, based on the set detection cycle. The previous detection cycle is the detection cycle before the current detection cycle. The detection cycle can be flexibly set based on actual control accuracy, for example, 1 second.

[0074] Step S430: Determine the product of the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the current detection cycle and the first set calculation coefficient, and record it as the first calculated value. Determine the difference between the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the current detection cycle and the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the previous detection cycle, and multiply the difference by the second set calculation coefficient, and record it as the second calculated value.

[0075] Step S440: taking the sum of the first calculated value and the second calculated value as a correction value of the current compressor frequency of the air conditioner.

[0076] Specifically, if Figure 9 As shown, the exhaust drying control method for the air conditioner further includes: in step 5, in the second heating stage, after reducing the compressor frequency to frequency f2, the compressor frequency is corrected according to the following formula after a certain period of time:

[0077] Corrected compressor frequency = f2 + correction value △F.

[0078] Correction value △F=a * T 内管温 +b( T 内管温 -One second ago T 内管温 ), where if the calculated correction value ΔF is not an integer, it is rounded down. Here, the purpose of frequency reduction is to reduce the internal pipe temperature rate; the purpose of correcting the compressor frequency is to ensure that the internal pipe temperature remains stable within a certain range. Limiting the frequency within a certain range ensures a relatively stable internal pipe temperature rise. If the frequency exceeds f2, the temperature rises too quickly and cannot be stably controlled. If the frequency is less than f2 / 2, the temperature rises too slowly or cannot be achieved at all.

[0079] in, T 内管温 = Current inner tube temperature T 内管温 -Set the inner tube temperature T 内管0 The corrected compressor frequency range is (f2 / 2~f2) Hz, a and b are calculation coefficients, and the values ​​of a and b are both 0.3~0.8.

[0080] Step S230, after the second heating stage runs for a third set time, the compressor frequency of the air conditioner, the opening of the throttling element of the air conditioner, and the speed of the outdoor fan of the air conditioner are jointly controlled according to the humidity before drying of the indoor heat exchanger of the air conditioner and the humidity after drying of the indoor heat exchanger of the air conditioner to achieve drying treatment of the indoor heat exchanger of the air conditioner.

[0081] In some embodiments, in step S230, the compressor frequency of the air conditioner, the opening degree of the throttling element of the air conditioner, and the speed of the outdoor fan of the air conditioner are jointly controlled according to the humidity before drying of the indoor heat exchanger of the air conditioner and the humidity after drying of the indoor heat exchanger of the air conditioner, so as to realize the specific process of drying the indoor heat exchanger of the air conditioner, see the following exemplary description.

[0082] The following combination Figure 5 The flowchart of an embodiment of the method of the present invention for jointly controlling the compressor frequency, the opening of the throttling element and the speed of the external fan in combination with the humidity before and after drying of the indoor heat exchanger is shown, further illustrating the specific process of jointly controlling the compressor frequency, the opening of the throttling element and the speed of the external fan in combination with the humidity before and after drying of the indoor heat exchanger in step S230, including: steps S510 to S530.

[0083] Step S510 determines whether the absolute value of the difference between the humidity of the indoor heat exchanger of the air conditioner before drying and the humidity of the indoor heat exchanger after drying is less than or equal to a set humidity, where the set humidity is a set ratio of the humidity of the indoor heat exchanger before drying. The third set duration is the difference between time ttotal and time t1, and the set ratio is, for example, 2%.

[0084] Step S520: If it is determined that the absolute value of the difference between the humidity before drying and the humidity after drying of the indoor heat exchanger of the air conditioner is less than or equal to the set humidity, then continue to perform the second heating stage.

[0085] Step S530: If it is determined that the absolute value of the difference between the humidity of the indoor heat exchanger of the air conditioner before drying and the humidity of the indoor heat exchanger of the air conditioner after drying is greater than the set humidity, the heating mode of the air conditioner is controlled to end, the outdoor fan of the air conditioner is controlled to end, and the indoor fan of the air conditioner is controlled to continue to run according to the set indoor unit for the first set time, and then the air conditioner is controlled to shut down.

[0086] Specifically, if Figure 9 As shown, the exhaust drying control method of the air conditioner further includes:

[0087] Step 6: Detect the humidity of the internal environment of the air conditioner, where d 干燥前 is the humidity before the drying function is turned on, d 干燥后 The humidity after the drying function is turned on. When detecting the humidity, a humidity sensor can be used for detection. 干燥前 -d 干燥后 |≤2%d 干燥前 If it meets the requirements, then |d 干燥前 -d 干燥后 |≤2%d 干燥前 Then execute step 7. If not, return to step 5 and continue to execute the second heating stage to continue the cycle drying.

[0088] Step 7. Exit the heating mode. After heating is completed, control the external fan to turn off and control the internal fan to continue to supply air at the speed r1 for t0 min. Then exit the drying function and turn off the machine.

[0089] The technical solution of this embodiment is adopted, by providing a drying function for an air conditioner having a fresh air duct and an exhaust duct (such as exhaust duct 3), a fresh air damper (such as fresh air damper 4) is provided at the connection between the fresh air duct and the fresh air inlet chamber of the fresh air duct to control the opening and closing of the fresh air inlet of the fresh air duct, and a rotary valve (such as rotary valve 2) is provided at the inlet of the air conditioner's exhaust duct to control the opening and closing of the exhaust duct inlet. After the air conditioner has finished cooling or dehumidifying, if the user chooses to activate the air conditioner's drying function, the air guide of the air conditioner closes, the rotary valve rotates to a position closing the exhaust duct inlet, thereby closing the exhaust duct inlet, and the fresh air damper rotates to a position closing the fresh air inlet of the fresh air duct, thereby closing the fresh air inlet of the fresh air duct. After that, after the internal fan is turned on to blow air at low speed for a certain period of time, the heating mode of the air conditioner is turned on, the external fan is turned on, and the compressor frequency, external fan speed and the opening of the throttling element are jointly controlled in the heating mode until the humidity of the environment where the internal heat exchanger of the air conditioner is located drops to the target humidity range. The heating mode of the air conditioner is stopped, the external fan is turned off, and the internal fan continues to blow air for a certain period of time before being shut down. Thus, after the cooling or dehumidification of the air conditioner is completed and the air guide plate is closed, the internal heat exchanger of the air conditioner is dried by jointly controlling the compressor frequency and the external fan speed of the air conditioner in the heating mode, which can ensure the drying effect and the user's comfortable experience.

[0090] According to an embodiment of the present invention, a control device for an air conditioner corresponding to the control method for the air conditioner is also provided. Figure 6The figure shows a schematic diagram of the structure of an embodiment of the device of the present invention. The air conditioner comprises a bottom housing 1, a fresh air duct, and an exhaust duct 3. A fresh air inlet cavity 6 is provided at the first end of the fresh air duct, a cavity is provided at the second end of the fresh air duct, and a fresh air baffle 4 is provided at the connection between the first end of the fresh air duct and the fresh air inlet cavity 6. The first end of the exhaust duct 3 is connected to the bottom housing, and the second end of the exhaust duct 3 is connected to the cavity of the second end of the fresh air duct. A rotary valve 2 is provided within the first end of the exhaust duct 3. When the fresh air baffle 4 is rotated to the first set position, it can completely block the fresh air inlet cavity 6. When the rotary valve 2 is rotated to the second set position, it can completely block the inlet of the first end of the exhaust duct 3. When the fresh air inlet cavity 6 and the inlet of the first end of the exhaust duct 3 are completely blocked, an exhaust passage is formed from the bottom housing 1 through the cavity of the exhaust duct 3 and the second end of the fresh air duct, leading to the outside of the room. Among them, the first setting position is the position of the fresh air baffle 4 when the fresh air inlet chamber 6 is completely closed, and the second setting position is the position of the rotating valve 2 when the inlet of the first port of the exhaust channel 3 is completely closed. Figure 8 The second position S2 in .

[0091] Specifically, Figure 7 FIG. 1 is a structural diagram of an embodiment of an air conditioner of the present invention. Figure 8 The diagram of the structure of the exhaust duct mechanism of the air conditioner of the present invention in different states. To solve the problem of water vapor inside the air conditioner (i.e. the water vapor problem in the heat exchanger of the air conditioner), the exhaust drying control device of the air conditioner provided by the present invention is suitable for Figure 7 and Figure 8 The air conditioner shown is also applicable to the air conditioner with application number 2022115780528 previously applied by the applicant.

[0092] like Figure 7 and Figure 8 The air conditioner shown has a bottom shell 1, a fresh air duct assembly, and an exhaust duct assembly 7. The fresh air duct assembly includes a fresh air motor, a fresh air baffle 4, a fresh air duct, and a fresh air inlet chamber 6. One end of the fresh air duct is connected to the fresh air inlet chamber 6, and the fresh air inlet chamber 6 is connected to the outside. The other end of the fresh air duct is connected to a cavity located on the side of the fresh air duct and connected to the fresh air channel. The fresh air baffle 4 is provided at the connection between the fresh air duct and the fresh air inlet chamber 6. The fresh air motor is connected to the fresh air baffle 4 and is used to drive the fresh air baffle 4 to rotate via the fresh air motor to control the connection between the fresh air duct and the fresh air inlet chamber 6. A fresh air connector 5 is provided at the bend of the fresh air duct.

[0093] The exhaust duct assembly 7 includes an exhaust duct 3, a drive motor, and a rotary valve 2. The exhaust duct 3 includes an upper duct 9 and a lower duct 10. One end of the exhaust duct 3 is connected to the bottom shell 1, and the other end of the exhaust duct 3 is connected to the cavity on the side of the fresh air duct. The rotary valve 2 is arranged in the exhaust duct 3. The drive motor is connected to the connecting shaft of the rotary valve 2. The rotary valve 2 is used to control the rotation of the rotary valve 2 by the drive motor to open and close the exhaust duct 3. For example, when the rotary valve 2 is in the first position S1 in the exhaust duct 3, the inlet of the exhaust duct 3 is closed. When the rotary valve 2 is in the second position S2 in the exhaust duct 3, the inlet of the exhaust duct 3 is opened.

[0094] See also Figure 7 and Figure 8 In the example shown, when the air conditioner is turned off or the anti-odor function is disabled, valve 2 is rotated parallel to the inlet of exhaust duct 3 (e.g., valve 2 is in the first position S1 in exhaust duct 3), completely sealing the inlet of exhaust duct 3 and preventing air from inside the air conditioner unit from being discharged through exhaust duct 3. When the air conditioner's drying function is enabled, valve 2 is rotated a certain angle (e.g., valve 2 is in the second position S2 in exhaust duct 3), completely sealing fresh air baffle 4 from fresh air inlet chamber 6. This creates a passage between the interior of the air conditioner unit and the outdoors, such as a passage connecting the bottom housing 1 through exhaust duct 3, the cavity on the side of the fresh air duct, and the fresh air duct to the outdoors. By closing the air guide plate and turning on the air conditioner's internal and external fans, moisture in the air inside the air conditioner unit can be discharged to the outdoors through the exhaust duct.

[0095] If the inside of the air conditioner is relatively humid, it will easily produce odor after a certain period of time. Figure 7 and Figure 8 The illustrated air conditioner has an odor prevention function. When the rotary valve 2 is in the first position S1 in the exhaust duct 3, the air conditioner's odor prevention passage is closed. When the rotary valve 2 is in the second position S2 in the exhaust duct 3, the air conditioner's odor prevention passage is opened. When condensed water vapor from the evaporator in the air conditioner's indoor unit is discharged through the odor prevention passage, the interior of the air conditioner remains dry, thereby preventing the generation of odors within the indoor unit. Thus, when the odor prevention passage is open, the air conditioner's drying function is achieved.

[0096] like Figure 8As shown, the exhaust duct assembly 7 comprises an upper duct 9, a lower duct 10, and a rotary valve 2, which has a valve disc 8. When the valve disc 8 of the rotary valve 2 is in a first position S1, both the upper duct 9 and the lower duct 10 are closed. When the valve disc 8 of the rotary valve 2 is in a second position S2, both the upper duct 9 and the lower duct 10 are connected to the fresh air duct, that is, to the outside. Preferably, when the rotary valve 2 is rotated at an angle of 20° to 160°, both the upper duct 9 and the lower duct 10 are connected to the fresh air duct.

[0097] The air conditioner control device includes: an acquisition unit 102 and a control unit 104 .

[0098] The control unit 104 is configured to determine whether the user of the air conditioner has activated the drying function of the air conditioner when the air conditioner needs to be shut down after the air conditioner has completed operation in cooling mode or dehumidification mode. The drying function of the air conditioner is used to dry the heat exchanger in the indoor unit of the air conditioner. The specific functions and processing of the control unit 104 are described in step S110.

[0099] The control unit 104 is further configured to, if it is determined that the user of the air conditioner has turned on the drying function of the air conditioner, control the air guide plate of the air conditioner to close, control the rotary valve 2 to rotate to completely seal the inlet of the first port of the exhaust duct 3, and control the fresh air baffle 4 to rotate to completely seal the fresh air inlet chamber 6. For example, the rotary valve 2 is controlled to rotate to the second set position to completely seal the inlet of the first port of the exhaust duct 3, and the fresh air baffle 4 is controlled to rotate to the first set position to completely seal the fresh air inlet chamber 6, thereby forming an exhaust passage from the bottom housing 1 through the exhaust duct 3 and the cavity of the second port of the fresh air duct to the outside. The specific functions and processing of the control unit 104 are also shown in step S120.

[0100] The acquisition unit 102 is configured to acquire the humidity of the indoor heat exchanger of the air conditioner before drying before the drying function of the air conditioner is turned on, which is recorded as the humidity before drying of the indoor heat exchanger of the air conditioner, such as humidity d 干燥前 After the drying function of the air conditioner is turned on, the humidity of the air conditioner's internal heat exchanger after drying is obtained, which is recorded as the humidity after drying of the air conditioner's internal heat exchanger, such as humidity d 干燥后 And, after the drying function of the air conditioner is turned on, the current pipe temperature of the indoor heat exchanger of the air conditioner is obtained, such as the current internal pipe temperature T 内管温 The specific functions and processing of the acquisition unit 102 are shown in step S130.

[0101] The control unit 104 is further configured to control the air conditioner's indoor fan to operate at a set indoor speed. The set indoor speed is less than or equal to the air conditioner's indoor fan speed at a medium or high wind speed setting. The set indoor speed is, for example, speed r1. The specific functions and processing of the control unit 104 are further described in step S140.

[0102] The control unit 104 is further configured to, after the air conditioner's indoor fan is operated at the set indoor unit speed for a first set time, control the air conditioner's heating mode to be turned on and operated, and control the air conditioner's outdoor fan to be turned on and operated, while the air conditioner's indoor fan continues to operate at the set indoor unit speed, so that the air conditioner's heating mode and the air conditioner's outdoor fan operate for a set total heating time while the air conditioner's indoor fan continues to operate at the set indoor unit speed. The first set time is, for example, time t0, and the set total heating time is, for example, time ttotal. The specific functions and processing of the control unit 104 are further described in step S150.

[0103] The control unit 104 is further configured to, while the air conditioner is in heating mode and the air conditioner's outdoor fan is running for the set total heating time, jointly control the air conditioner's compressor frequency, the opening of the air conditioner's throttling element, and the speed of the air conditioner's outdoor fan based on the current pipe temperature of the air conditioner's indoor heat exchanger, the pre-drying humidity of the air conditioner's indoor heat exchanger, and the post-drying humidity of the air conditioner's indoor heat exchanger, thereby drying the air conditioner's indoor heat exchanger. The specific functions and processing of the control unit 104 are further described in step S160.

[0104] Specifically, Figure 9 This is a flow chart of an embodiment of the exhaust drying control device of an air conditioner of the present invention, specifically a flow chart of the drying function control device of the air conditioner. Figure 9 As shown, the exhaust drying control device of the air conditioner includes:

[0105] Step 1: When the air conditioner needs to be shut down after cooling or dehumidifying, the user can choose to manually turn on or automatically turn on the air conditioner's drying function. If the user does not choose the drying function, the air conditioner will be shut down directly. If the user chooses to turn on the drying function, proceed to step 2.

[0106] Step 2: When the drying function of the air conditioner is turned on, the air guide plate and the fresh air damper 4 of the air conditioner are controlled to be directly closed, and the valve plate 8 of the rotating valve 2 is rotated to a certain angle to the second position S2, and then step 3 is executed.

[0107] Step 3: Turn on the air conditioner's indoor fan and set it to deliver air at a speed of r1 for a time of t0 minutes, where t0 is ≥ 2 minutes. Then, execute steps 4 through 7 to dry the air conditioner's indoor heat exchanger. In steps 4 through 7, the air conditioner's compressor frequency and the air conditioner's outdoor fan speed are jointly controlled to dry the air conditioner's indoor heat exchanger.

[0108] The solution of the present invention proposes an exhaust drying control device for an air conditioner. After the cooling or dehumidification of the air conditioner is completed, the internal heat exchanger of the air conditioner is dried by jointly controlling the compressor frequency of the air conditioner and the speed of the air conditioner's external fan. During the entire drying process, a relatively high temperature can be maintained without the problem of the air conditioner shutting down due to overheating protection. In addition, during the drying process, the air guide plate is closed, which not only improves the drying effect but also provides a better user comfort experience, thereby making the drying control function of the air conditioner more reliable.

[0109] In some embodiments, the control unit 104, while operating the air conditioner in heating mode and the air conditioner's outdoor fan for the set total heating time, combines the current pipe temperature of the air conditioner's indoor heat exchanger, the humidity of the air conditioner's indoor heat exchanger before drying, and the humidity of the air conditioner's indoor heat exchanger after drying to jointly control the air conditioner's compressor frequency, the opening of the air conditioner's throttling element, and the speed of the air conditioner's outdoor fan to achieve drying of the air conditioner's indoor heat exchanger, including:

[0110] The control unit 104 is further configured to execute a first heating phase. During the first heating phase, the air conditioner's compressor frequency is controlled to a first set frequency, the air conditioner's outdoor fan speed is controlled to a first set outdoor unit speed, and the air conditioner's indoor fan speed is controlled to remain at the set indoor unit speed. The first set frequency may be, for example, frequency f1, and the first set outdoor unit speed may be, for example, speed R1. The specific functions and processing of the control unit 104 are further described in step S210.

[0111] The control unit 104 is further configured to execute a second heating phase if, after the first heating phase has run for a second set duration, the current pipe temperature of the indoor heat exchanger of the air conditioner is greater than or equal to the set pipe temperature of the indoor heat exchanger. During the second heating phase, the compressor frequency of the air conditioner is controlled to decrease to a second set frequency, the speed of the outdoor fan of the air conditioner is controlled to decrease to a second set outdoor speed, and the speed of the indoor fan of the air conditioner is controlled to remain at the set indoor speed. The second set frequency is, for example, frequency f2, and the second set outdoor speed is, for example, speed R2. Of course, if, after the first heating phase has run for a second set duration, the current pipe temperature of the indoor heat exchanger of the air conditioner is still less than the set pipe temperature, the first heating phase is continued until the current pipe temperature of the indoor heat exchanger of the air conditioner is greater than or equal to the set pipe temperature, at which time the second heating phase is executed. The second set duration is, for example, time t1, and the set pipe temperature is, for example, temperature T1. The second set outdoor speed is greater than or equal to half of the first set outdoor speed and less than or equal to the first set outdoor speed. The specific functions and processing of the control unit 104 are also shown in step S220.

[0112] Specifically, if Figure 9 As shown, the exhaust drying control device of the air conditioner further includes:

[0113] Step 4: In the first heating stage, the heating mode of the air conditioner is turned on for a heating time of t1. In order to reduce the temperature of the indoor heat exchanger of the air conditioner to T 内管温 Rapidly raise the temperature to a target high temperature, such as a high temperature of about 56°C, to quickly evaporate the condensed water on the heat exchanger, i.e., the evaporator, of the air conditioner indoor unit, turn on the compressor and the outdoor fan of the air conditioner, control the compressor frequency of the air conditioner to be frequency f1, control the opening of the throttling element of the air conditioner to be opening k, and control the speed of the outdoor fan to be speed R1.

[0114] In the first heating stage, when the temperature of the indoor heat exchanger of the air conditioner is determined to be T 内管温 When the set temperature T1 is reached (e.g., 45°C ≤ set temperature T1 ≤ 54°C), step 5 is executed to enter the second heating stage; otherwise, the heating and control of the first heating stage are continued.

[0115] Step 5: In the second heating stage, the air conditioner continues to heat in the heating mode, and the heating time is t2 = (t-t1) min, where t is the set total heating time.

[0116] In the second heating stage, the compressor frequency needs to be reduced to frequency f2.

[0117] During the second heating phase, the throttling element opening is maintained at opening k, and the speed of the outdoor fan is reduced to speed R2, with R1 / 2 ≤ R2 ≤ R1. Steps 6 and 7 are then executed to jointly control the compressor frequency, the opening of the throttling element, and the speed of the outdoor fan based on the pre-drying and post-drying humidity of the air conditioner's indoor heat exchanger, thereby drying the indoor heat exchanger. Because restarting the fan at a higher speed after shutting down the air conditioner produces significant noise, the indoor fan speed is maintained at speed r1 throughout the drying process, with speed r1 ≤ medium-high wind speed.

[0118] In some embodiments, the control unit 104 controls the compressor frequency of the air conditioner to decrease to a second set frequency during the second heating stage, including:

[0119] The control unit 104 is further configured to first control the air conditioner's compressor frequency to decrease to a second set frequency to obtain the current air conditioner compressor frequency. After a set time, a correction value for the current air conditioner compressor frequency is calculated based on the current pipe temperature of the air conditioner's indoor heat exchanger within a range from half the second set frequency to the second set frequency. The specific functions and processing of the control unit 104 are further described in step S310.

[0120] The control unit 104 is further configured to determine the difference between the current compressor frequency of the air conditioner and the correction value of the current compressor frequency of the air conditioner as the new current compressor frequency of the air conditioner, and control the current compressor frequency of the air conditioner to decrease to the new current compressor frequency of the air conditioner. The specific functions and processing of the control unit 104 are further described in step S320.

[0121] The control unit 104 is further configured to implement dynamic correction of the current compressor frequency of the air conditioner in this cycle. The specific functions and processing of the control unit 104 are also shown in step S330.

[0122] Specifically, if Figure 9 As shown, the exhaust drying control device for the air conditioner further includes: in step 5, in the second heating stage, after reducing the compressor frequency to frequency f2, the compressor frequency is corrected after a certain period of time.

[0123] In some embodiments, the control unit 104 calculates the current correction value of the compressor frequency of the air conditioner according to the current pipe temperature of the indoor heat exchanger of the air conditioner, including:

[0124] The control unit 104 is further configured to record the difference between the current pipe temperature of the air conditioner's indoor heat exchanger and the set pipe temperature of the air conditioner's indoor heat exchanger as the pipe temperature difference of the air conditioner's indoor heat exchanger. The specific functions and processing of the control unit 104 are further described in step S410.

[0125] The control unit 104 is further configured to determine, based on a set detection cycle, a pipe temperature difference of the indoor heat exchanger of the air conditioner detected in a previous detection cycle, and determine a pipe temperature difference of the indoor heat exchanger of the air conditioner detected in a current detection cycle. The previous detection cycle is the detection cycle before the current detection cycle. The detection cycle can be flexibly set based on actual control accuracy, for example, to 1 second. The specific functions and processing of the control unit 104 are further described in step S420.

[0126] The control unit 104 is further configured to determine the product of the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the current detection cycle and a first set calculation coefficient, recording the product as a first calculated value. The control unit 104 is further configured to determine the difference between the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the current detection cycle and the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the previous detection cycle, and multiply the product of the difference and a second set calculation coefficient as a second calculated value. The specific functions and processing of the control unit 104 are further described in step S430.

[0127] The control unit 104 is further configured to use the sum of the first calculated value and the second calculated value as the current correction value of the compressor frequency of the air conditioner. The specific functions and processing of the control unit 104 are also shown in step S440.

[0128] Specifically, if Figure 9 As shown, the exhaust drying control device for the air conditioner further includes: in step 5, in the second heating stage, after reducing the compressor frequency to frequency f2, the compressor frequency is corrected according to the following formula after a certain period of time:

[0129] Corrected compressor frequency = f2 + correction value △F.

[0130] Correction value △F=a * T 内管温 +b( T 内管温 -One second ago T 内管温 ), wherein, when the calculated correction value △F is not an integer value, it is rounded down.

[0131] in, T 内管温= Current inner tube temperature T 内管温 -Set the inner tube temperature T 内管0 The corrected compressor frequency range is (f2 / 2~f2) Hz, a and b are calculation coefficients, and the values ​​of a and b are both 0.3~0.8.

[0132] The control unit 104 is further configured to, after the second heating stage has run for a third set duration, jointly control the compressor frequency of the air conditioner, the opening degree of the throttling element of the air conditioner, and the speed of the outdoor fan of the air conditioner based on the pre-drying humidity of the indoor heat exchanger of the air conditioner and the post-drying humidity of the indoor heat exchanger of the air conditioner, thereby drying the indoor heat exchanger of the air conditioner. The specific functions and processing of the control unit 104 are further described in step S230.

[0133] In some embodiments, the control unit 104 jointly controls the compressor frequency of the air conditioner, the opening degree of the throttling element of the air conditioner, and the speed of the outdoor fan of the air conditioner based on the humidity of the indoor heat exchanger of the air conditioner before drying and the humidity of the indoor heat exchanger of the air conditioner after drying, so as to achieve drying of the indoor heat exchanger of the air conditioner, including:

[0134] The control unit 104 is further configured to determine whether the absolute value of the difference between the pre-drying humidity of the air conditioner's indoor heat exchanger and the post-drying humidity of the air conditioner's indoor heat exchanger is less than or equal to a set humidity, where the set humidity is a set ratio of the pre-drying humidity of the air conditioner's indoor heat exchanger. The third set duration is the difference between time ttotal and time t1, and the set ratio is, for example, 2%. The specific functions and processing of the control unit 104 are further described in step S510.

[0135] The control unit 104 is further configured to continue the second heating phase if it is determined that the absolute value of the difference between the pre-drying humidity of the indoor heat exchanger of the air conditioner and the post-drying humidity of the indoor heat exchanger of the air conditioner is less than or equal to the set humidity. The specific functions and processing of the control unit 104 are further described in step S520.

[0136] The control unit 104 is further configured to, if it is determined that the absolute value of the difference between the humidity of the indoor heat exchanger of the air conditioner before drying and the humidity of the indoor heat exchanger after drying is greater than the set humidity, control the air conditioner to terminate the heating mode, control the air conditioner's outdoor fan to terminate operation, and control the air conditioner's indoor fan to continue operating for the first set time period according to the set indoor unit, and then control the air conditioner to shut down. The specific functions and processing of the control unit 104 are further described in step S530.

[0137] Specifically, if Figure 9 As shown, the exhaust drying control device of the air conditioner further includes:

[0138] Step 6: Detect the humidity of the internal environment of the air conditioner, where d 干燥前 is the humidity before the drying function is turned on, d 干燥后 The humidity after the drying function is turned on. 干燥前 -d 干燥后 |≤2%d 干燥前 If it meets the requirements, then |d 干燥前 -d 干燥后 |≤2%d 干燥前 Then execute step 7. If not, return to step 5 and continue to execute the second heating stage to continue the cycle drying.

[0139] Step 7. Exit the heating mode. After heating is completed, control the external fan to turn off and control the internal fan to continue to supply air at the speed r1 for t0 min. Then exit the drying function and turn off the machine.

[0140] Since the processing and functions implemented by the device of this embodiment basically correspond to the embodiments, principles and examples of the aforementioned method, for any details not fully described in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments and will not be repeated here.

[0141] By adopting the technical solution of the present invention, a drying function is set for an air conditioner having a fresh air duct and an exhaust duct (such as the exhaust duct 3), a fresh air baffle (such as the fresh air baffle 4) is provided at the connection between the fresh air duct and the fresh air inlet cavity of the fresh air duct to control the opening and closing of the fresh air inlet of the fresh air duct, and a rotary valve (such as the rotary valve 2) is provided at the inlet of the exhaust duct of the air conditioner to control the opening and closing of the inlet of the exhaust duct; after the cooling or dehumidification of the air conditioner is completed, if the user chooses to turn on the drying function of the air conditioner, the air guide plate of the air conditioner is closed, and the rotary valve is rotated to the position of closing the inlet of the exhaust duct, that is, the exhaust duct is closed. The inlet of the fresh air duct is closed, and the fresh air baffle is rotated to the position of closing the fresh air inlet of the fresh air duct, that is, the fresh air inlet of the fresh air duct is closed; after that, the internal fan is turned on to supply air at a low speed for a certain period of time, the heating mode of the air conditioner is turned on, the external fan is turned on, and the compressor frequency, external fan speed and the opening of the throttling element are jointly controlled in the heating mode until the humidity of the environment where the indoor heat exchanger of the air conditioner is located drops to the target humidity range, the heating mode of the air conditioner is stopped, the external fan is turned off, and the internal fan continues to supply air for a certain period of time and then shuts down. During the drying process, the air guide plate is closed, which makes the reliability of the drying control function of the air conditioner better.

[0142] According to an embodiment of the present invention, an air conditioner corresponding to the control device of the air conditioner is also provided. The air conditioner may include: the control device of the air conditioner described above.

[0143] Since the processing and functions implemented by the air conditioner of this embodiment basically correspond to the embodiments, principles and examples of the aforementioned devices, for any details not fully described in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments and will not be repeated here.

[0144] By adopting the technical solution of the present invention, a drying function is set for an air conditioner having a fresh air duct and an exhaust duct (such as the exhaust duct 3), a fresh air baffle (such as the fresh air baffle 4) is provided at the connection between the fresh air duct and the fresh air inlet cavity of the fresh air duct to control the opening and closing of the fresh air inlet of the fresh air duct, and a rotary valve (such as the rotary valve 2) is provided at the inlet of the exhaust duct of the air conditioner to control the opening and closing of the inlet of the exhaust duct; after the cooling or dehumidification of the air conditioner is completed, if the user chooses to turn on the drying function of the air conditioner, the air guide plate of the air conditioner is closed, and the rotary valve is rotated to the position of closing the inlet of the exhaust duct, that is, the exhaust is closed. The inlet of the channel is closed, and the fresh air baffle is rotated to the position of closing the fresh air inlet of the fresh air channel, that is, the fresh air inlet of the fresh air channel is closed; then, after the internal fan is turned on to supply air at a low speed for a certain period of time, the heating mode of the air conditioner is turned on, the external fan is turned on, and the compressor frequency, external fan speed and the opening of the throttling element are jointly controlled in the heating mode until the humidity of the environment where the indoor heat exchanger of the air conditioner is located drops to the target humidity range. The heating mode of the air conditioner is stopped, the external fan is turned off, and the internal fan continues to supply air for a certain period of time and then shuts down. During the entire drying process, a higher temperature can be maintained without the problem of the air conditioner being shut down due to overheating protection.

[0145] According to an embodiment of the present invention, a storage medium corresponding to the air conditioner control method is also provided, wherein the storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the above-mentioned air conditioner control method.

[0146] Since the processing and functions implemented by the storage medium of this embodiment basically correspond to the embodiments, principles and examples of the aforementioned method, for any details not fully described in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments and will not be repeated here.

[0147] By adopting the technical solution of the present invention, a drying function is set for an air conditioner having a fresh air duct and an exhaust duct (such as the exhaust duct 3), a fresh air baffle (such as the fresh air baffle 4) is provided at the connection between the fresh air duct and the fresh air inlet cavity of the fresh air duct to control the opening and closing of the fresh air inlet of the fresh air duct, and a rotary valve (such as the rotary valve 2) is provided at the inlet of the exhaust duct of the air conditioner to control the opening and closing of the inlet of the exhaust duct; after the cooling or dehumidification of the air conditioner is completed, if the user chooses to turn on the drying function of the air conditioner, the air guide plate of the air conditioner is closed, and the rotary valve is rotated to close the inlet of the exhaust duct. The position, that is, the inlet of the exhaust duct is closed, and the fresh air baffle is rotated to the position of closing the fresh air inlet of the fresh air duct, that is, the fresh air inlet of the fresh air duct is closed; after that, the internal fan is turned on to supply air at a low speed for a certain period of time, the heating mode of the air conditioner is turned on, the external fan is turned on, and the compressor frequency, external fan speed and the opening of the throttling element are jointly controlled in the heating mode until the humidity of the environment where the indoor heat exchanger of the air conditioner is located drops to the target humidity range, then the heating mode of the air conditioner is stopped, the external fan is turned off, and the internal fan is allowed to continue to supply air for a certain period of time and then shut down, which not only improves the drying effect, but also provides a better comfort experience for users.

[0148] In summary, it is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0149] The foregoing description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims.

Claims

1. A method for controlling an air conditioner, characterized in that: The air conditioner comprises a bottom shell (1), a fresh air passage and an exhaust passage (3); a fresh air inlet cavity (6) is provided at the first port of the fresh air passage, a cavity is provided at the second port of the fresh air passage, and a fresh air baffle (4) is provided at the connection between the first port of the fresh air passage and the fresh air inlet cavity (6); the first port of the exhaust passage (3) is connected to the bottom shell, the second port of the exhaust passage (3) is connected to the cavity at the second port of the fresh air duct, and a rotary valve (2) is provided inside the first port of the exhaust passage (3); When the fresh air baffle (4) is rotated to the first set position, the fresh air baffle (4) can completely close the fresh air inlet chamber (6); when the rotary valve (2) is rotated to the second set position, the rotary valve (2) can completely close the inlet of the first port of the exhaust channel (3); when the fresh air inlet chamber (6) is completely closed and the inlet of the first port of the exhaust channel (3) is completely closed, an exhaust passage can be formed from the bottom shell (1) through the cavity of the exhaust channel (3) and the second port of the fresh air duct to the outside of the room; The control method of the air conditioner comprises: After the cooling mode or the dehumidification mode of the air conditioner ends, determining whether the user of the air conditioner has turned on the drying function of the air conditioner; the drying function of the air conditioner is a function for drying the heat exchanger of the indoor unit of the air conditioner; If it is determined that the user of the air conditioner has turned on the drying function of the air conditioner, the air guide plate of the air conditioner is controlled to be closed, the rotary valve (2) is controlled to rotate so that the inlet of the first port of the exhaust passage (3) is completely closed, and the fresh air baffle (4) is controlled to rotate so that the fresh air inlet chamber (6) is completely closed; Before the drying function of the air conditioner is activated, the humidity of the indoor heat exchanger of the air conditioner before drying is obtained, recorded as the pre-drying humidity of the indoor heat exchanger of the air conditioner; after the drying function of the air conditioner is activated, the humidity of the indoor heat exchanger of the air conditioner after drying is obtained, recorded as the post-drying humidity of the indoor heat exchanger of the air conditioner; and after the drying function of the air conditioner is activated, the current pipe temperature of the indoor heat exchanger of the air conditioner is obtained; Controlling the internal fan of the air conditioner to start, so that the internal fan of the air conditioner runs at a set internal unit speed; After the indoor fan of the air conditioner is operated at the set indoor unit speed for a first set time, controlling the heating mode of the air conditioner to be turned on and operated, and controlling the outdoor fan of the air conditioner to be turned on and operated; Executing a first heating stage; in the first heating stage, controlling the compressor frequency of the air conditioner to a first set frequency, controlling the speed of the outdoor fan of the air conditioner to a first set outdoor unit speed, and controlling the speed of the indoor fan of the air conditioner to still be the set indoor unit speed; After the first heating stage runs for a second set time, if the current pipe temperature of the indoor heat exchanger of the air conditioner is greater than or equal to the set pipe temperature of the indoor heat exchanger of the air conditioner, the second heating stage is executed; in the second heating stage, the compressor frequency of the air conditioner is controlled to decrease to a second set frequency, the speed of the outdoor fan of the air conditioner is controlled to decrease to a second set outdoor speed, and the speed of the indoor fan of the air conditioner is controlled to remain at the set indoor speed; After the second heating stage runs for a third set time, the compressor frequency of the air conditioner, the opening degree of the throttling element of the air conditioner, and the speed of the outdoor fan of the air conditioner are jointly controlled based on the pre-drying humidity of the indoor heat exchanger of the air conditioner and the post-drying humidity of the indoor heat exchanger of the air conditioner to achieve drying of the indoor heat exchanger of the air conditioner; wherein controlling the compressor frequency of the air conditioner to decrease to the second set frequency includes: First, the compressor frequency of the air conditioner is controlled to decrease to a second set frequency to obtain the current compressor frequency of the air conditioner; after a set time, a correction value of the current compressor frequency of the air conditioner is calculated based on the current pipe temperature of the indoor heat exchanger of the air conditioner; determining a difference between a current compressor frequency of the air conditioner and a correction value of the current compressor frequency of the air conditioner as a new current compressor frequency of the air conditioner, and controlling the current compressor frequency of the air conditioner to decrease to the new current compressor frequency of the air conditioner; In this cycle, the current compressor frequency of the air conditioner is dynamically corrected, and the compressor frequency of the air conditioner is limited to a range from half of the second set frequency to the second set frequency.

2. The air conditioner control method according to claim 1, characterized in that: Calculating a current correction value of the compressor frequency of the air conditioner according to the current pipe temperature of the indoor heat exchanger of the air conditioner includes: Recording the difference between the current pipe temperature of the indoor heat exchanger of the air conditioner and the set pipe temperature of the indoor heat exchanger of the air conditioner as the pipe temperature difference of the indoor heat exchanger of the air conditioner; According to a set detection cycle, determining a pipe temperature difference of the indoor heat exchanger of the air conditioner detected in a previous detection cycle, and determining a pipe temperature difference of the indoor heat exchanger of the air conditioner detected in a current detection cycle; Determine the product of the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the current detection cycle and the first set calculation coefficient, and record it as a first calculated value; determine the difference between the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the current detection cycle and the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the previous detection cycle, and multiply the difference by the second set calculation coefficient, and record it as a second calculated value; The sum of the first calculated value and the second calculated value is used as a correction value of the current compressor frequency of the air conditioner.

3. The air conditioner control method according to claim 1 or 2, characterized in that: The method comprises: jointly controlling the compressor frequency of the air conditioner, the opening degree of the throttling element of the air conditioner, and the rotation speed of the outdoor fan of the air conditioner according to the humidity of the indoor heat exchanger of the air conditioner before drying and the humidity of the indoor heat exchanger of the air conditioner after drying, so as to achieve drying processing of the indoor heat exchanger of the air conditioner, comprising: determining whether an absolute value of a difference between a humidity of the indoor heat exchanger of the air conditioner before drying and a humidity of the indoor heat exchanger of the air conditioner after drying is less than or equal to a set humidity, the set humidity being a set ratio of the humidity of the indoor heat exchanger of the air conditioner before drying; If it is determined that the absolute value of the difference between the humidity before drying of the indoor heat exchanger of the air conditioner and the humidity after drying of the indoor heat exchanger of the air conditioner is less than or equal to the set humidity, continuing to perform the second heating stage; If it is determined that the absolute value of the difference between the humidity of the indoor heat exchanger of the air conditioner before drying and the humidity of the indoor heat exchanger of the air conditioner after drying is greater than the set humidity, the heating mode of the air conditioner is controlled to end operation, the outdoor fan of the air conditioner is controlled to end operation, and the indoor fan of the air conditioner is controlled to continue to operate according to the set indoor unit for the first set time, and then the air conditioner is controlled to shut down.

4. A control device for an air conditioner, characterized in that: The air conditioner comprises a bottom shell (1), a fresh air passage and an exhaust passage (3); a fresh air inlet cavity (6) is provided at the first port of the fresh air passage, a cavity is provided at the second port of the fresh air passage, and a fresh air baffle (4) is provided at the connection between the first port of the fresh air passage and the fresh air inlet cavity (6); the first port of the exhaust passage (3) is connected to the bottom shell, the second port of the exhaust passage (3) is connected to the cavity at the second port of the fresh air duct, and a rotary valve (2) is provided inside the first port of the exhaust passage (3); When the fresh air baffle (4) is rotated to the first set position, the fresh air baffle (4) can completely close the fresh air inlet chamber (6); when the rotary valve (2) is rotated to the second set position, the rotary valve (2) can completely close the inlet of the first port of the exhaust channel (3); when the fresh air inlet chamber (6) is completely closed and the inlet of the first port of the exhaust channel (3) is completely closed, an exhaust passage can be formed from the bottom shell (1) through the cavity of the exhaust channel (3) and the second port of the fresh air duct to the outside of the room; The control device of the air conditioner comprises: The control unit is configured to determine whether a user of the air conditioner has turned on a drying function of the air conditioner after the air conditioner has finished operating in a cooling mode or a dehumidification mode; the drying function of the air conditioner is a function for drying an indoor heat exchanger of the air conditioner; The control unit is further configured to, if it is determined that the user of the air conditioner has turned on the drying function of the air conditioner, control the air guide plate of the air conditioner to close, control the rotary valve (2) to rotate so that the inlet of the first port of the exhaust channel (3) is completely closed, and control the fresh air baffle (4) to rotate so that the fresh air inlet chamber (6) is completely closed; an acquiring unit configured to, before the drying function of the air conditioner is activated, acquire the humidity of the indoor heat exchanger of the air conditioner before drying, recording the humidity as the indoor heat exchanger humidity before drying of the air conditioner; after the drying function of the air conditioner is activated, acquire the humidity of the indoor heat exchanger of the air conditioner after drying, recording the humidity as the indoor heat exchanger humidity after drying of the air conditioner; and, after the drying function of the air conditioner is activated, acquire a current pipe temperature of the indoor heat exchanger of the air conditioner; The control unit is further configured to control the internal fan of the air conditioner to turn on, so that the internal fan of the air conditioner runs at a set internal unit speed; The control unit is further configured to, after the indoor fan of the air conditioner is operated at the set indoor unit speed for a first set time period, control the heating mode of the air conditioner to be turned on and operated, and control the outdoor fan of the air conditioner to be turned on and operated; The control unit is further configured to execute a first heating stage; in the first heating stage, the compressor frequency of the air conditioner is controlled to be a first set frequency, the speed of the outdoor fan of the air conditioner is controlled to be a first set outdoor unit speed, and the speed of the indoor fan of the air conditioner is controlled to remain at the set indoor unit speed; After the first heating stage runs for a second set time, if the current pipe temperature of the indoor heat exchanger of the air conditioner is greater than or equal to the set pipe temperature of the indoor heat exchanger of the air conditioner, the second heating stage is executed; in the second heating stage, the compressor frequency of the air conditioner is controlled to decrease to a second set frequency, the speed of the outdoor fan of the air conditioner is controlled to decrease to a second set outdoor speed, and the speed of the indoor fan of the air conditioner is controlled to remain at the set indoor speed; After the second heating stage runs for a third set time, the compressor frequency of the air conditioner, the opening degree of the throttling element of the air conditioner, and the speed of the outdoor fan of the air conditioner are jointly controlled based on the pre-drying humidity of the indoor heat exchanger of the air conditioner and the post-drying humidity of the indoor heat exchanger of the air conditioner, so as to achieve drying of the indoor heat exchanger of the air conditioner; The control unit controls the compressor frequency of the air conditioner to decrease to a second set frequency, including: First, the compressor frequency of the air conditioner is controlled to decrease to a second set frequency to obtain the current compressor frequency of the air conditioner; after a set time, a correction value of the current compressor frequency of the air conditioner is calculated based on the current pipe temperature of the indoor heat exchanger of the air conditioner; determining a difference between a current compressor frequency of the air conditioner and a correction value of the current compressor frequency of the air conditioner as a new current compressor frequency of the air conditioner, and controlling the current compressor frequency of the air conditioner to decrease to the new current compressor frequency of the air conditioner; In this cycle, the current compressor frequency of the air conditioner is dynamically corrected, and the compressor frequency of the air conditioner is limited to a range from half of the second set frequency to the second set frequency.

5. The control device for an air conditioner according to claim 4, wherein: The control unit calculates a correction value of the current compressor frequency of the air conditioner according to the current pipe temperature of the indoor heat exchanger of the air conditioner, including: Recording the difference between the current pipe temperature of the indoor heat exchanger of the air conditioner and the set pipe temperature of the indoor heat exchanger of the air conditioner as the pipe temperature difference of the indoor heat exchanger of the air conditioner; According to a set detection cycle, determining a pipe temperature difference of the indoor heat exchanger of the air conditioner detected in a previous detection cycle, and determining a pipe temperature difference of the indoor heat exchanger of the air conditioner detected in a current detection cycle; Determine the product of the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the current detection cycle and the first set calculation coefficient, and record it as a first calculated value; determine the difference between the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the current detection cycle and the pipe temperature difference of the indoor heat exchanger of the air conditioner detected in the previous detection cycle, and multiply the difference by the second set calculation coefficient, and record it as a second calculated value; The sum of the first calculated value and the second calculated value is used as a correction value of the current compressor frequency of the air conditioner.

6. The air conditioner control device according to claim 4 or 5, characterized in that: The control unit jointly controls the compressor frequency of the air conditioner, the opening degree of the throttling element of the air conditioner, and the rotation speed of the outdoor fan of the air conditioner based on the humidity of the indoor heat exchanger of the air conditioner before drying and the humidity of the indoor heat exchanger of the air conditioner after drying, so as to achieve drying processing of the indoor heat exchanger of the air conditioner, including: determining whether an absolute value of a difference between a humidity of the indoor heat exchanger of the air conditioner before drying and a humidity of the indoor heat exchanger of the air conditioner after drying is less than or equal to a set humidity, the set humidity being a set ratio of the humidity of the indoor heat exchanger of the air conditioner before drying; If it is determined that the absolute value of the difference between the humidity before drying of the indoor heat exchanger of the air conditioner and the humidity after drying of the indoor heat exchanger of the air conditioner is less than or equal to the set humidity, continuing to perform the second heating stage; If it is determined that the absolute value of the difference between the humidity of the indoor heat exchanger of the air conditioner before drying and the humidity of the indoor heat exchanger of the air conditioner after drying is greater than the set humidity, the heating mode of the air conditioner is controlled to end operation, the outdoor fan of the air conditioner is controlled to end operation, and the indoor fan of the air conditioner is controlled to continue to operate according to the set indoor unit for the first set time, and then the air conditioner is controlled to shut down.

7. An air conditioner, characterized in that: include: The control device for an air conditioner according to any one of claims 4 to 6.

8. A storage medium, characterized in that: The storage medium includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute the air conditioner control method according to any one of claims 1 to 3.

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