Anti-warm-up control method and device of air conditioner and air conditioner

Abstract

This invention discloses an anti-backflow control method, an anti-backflow control device, and an air conditioner. The air conditioner casing defines an air outlet, with a first air guide at the outlet. The air conditioner also includes a second air guide, movably disposed outside the air outlet. The anti-backflow control method includes: determining the relationship between the return air temperature and the set temperature when the air conditioner is operating in anti-direct-blow mode; controlling the first air guide to perform left-right airflow when the return air temperature is lower than the set temperature; and determining whether to control the second air guide to move synchronously with the first air guide based on the difference between the set temperature and the return air temperature. Therefore, the anti-backflow control method of this application can prevent backflow in the air conditioner during anti-direct-blow mode, resulting in better temperature uniformity throughout the room, improving the user experience, and reducing the probability of condensation without the need for temperature compensation.

Description

Technical Field

[0001] This invention relates to the field of household appliances, and in particular to a method, device and method for preventing backheating in an air conditioner. Background Technology

[0002] In related technologies, air conditioners are prone to backheating in anti-direct-blowing mode, resulting in poor temperature uniformity throughout the room and affecting the user experience.

[0003] If temperature compensation is added to improve the situation, the cooler air will tend to settle, leading to a noticeable temperature stratification between the upper and lower parts of the air conditioner. This will negatively impact the user experience. Furthermore, the actual air outlet temperature of the air conditioner will be lower after temperature compensation is added, which will increase the probability of condensation. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an anti-backflow control method for air conditioners. The anti-backflow control method of the present application can avoid backflow phenomenon in the anti-direct-blowing mode of the air conditioner, thereby making the temperature uniformity in various parts of the room better, improving the user experience, and eliminating the need for temperature compensation, thus reducing the probability of condensation.

[0005] The present invention further proposes an anti-backheat control device for air conditioners.

[0006] The present invention further proposes an air conditioner.

[0007] The present invention further proposes a computer-readable storage medium.

[0008] According to the anti-backflow control method for an air conditioner of the present invention, the housing of the air conditioner defines an air outlet, and a first air guide is provided at the air outlet. The first air guide rotates about a vertical axis to change the air outlet direction. The air conditioner includes a second air guide, which is movably disposed outside the air outlet. The second air guide moves between a first position and a second position. In the first position, the second air guide cooperates with a first side of the air outlet to guide air towards a second side of the air outlet. In the second position, the second air guide cooperates with a second side of the air outlet to guide air towards the second side of the air outlet. The first side air guide of the outlet defines an air outlet channel between the first position and the second position, between the second air guide and the first side of the air outlet, and between the second air guide and the second side of the air outlet. The anti-backflow control method includes: when the air conditioner is determined to be operating in anti-direct-blow mode, determining the relationship between the return air temperature and the set temperature; when the return air temperature is lower than the set temperature, controlling the first air guide to perform left and right sweeping, and determining whether to control the second air guide to move synchronously with the first air guide based on the difference between the set temperature and the return air temperature.

[0009] According to the anti-backflow control method of the air conditioner of the present invention, backflow phenomenon can be avoided in the anti-direct-blowing mode of the air conditioner, thereby making the temperature uniformity of various parts of the room better, improving the user experience, and eliminating the need for temperature compensation, thus reducing the probability of condensation.

[0010] In some examples of the present invention, determining whether to control the second air guide to move synchronously with the first air guide based on the difference between the set temperature and the return air temperature includes: when the difference is greater than or equal to a preset temperature threshold, controlling the second air guide to move synchronously with the first air guide.

[0011] In some examples of the present invention, when the difference is greater than zero and less than a preset temperature threshold, the second air guide is controlled to be between the first position and the second position and opposite to the air outlet.

[0012] In some examples of the present invention, determining that the air conditioner operates in an anti-direct-blow mode includes: determining that the air conditioner operates in an anti-direct-blow mode when the return air temperature is equal to the set temperature.

[0013] In some examples of the present invention, when the air conditioner is operating in anti-direct-blow mode, the first air guide is controlled to guide air towards the front of the air outlet, the air conditioner's louvers are controlled to guide air upward, and the second air guide is controlled to be between the first position and the second position and opposite to the air outlet.

[0014] In some examples of the present invention, when the return air temperature is greater than or equal to the set temperature, the first air guide is kept facing directly in front of the air outlet, the louvers of the air conditioner are kept facing upward, and the second air guide is kept between the first position and the second position and opposite to the air outlet.

[0015] In some examples of the present invention, when the first air guide performs left and right sweeping and the second air guide moves synchronously with the first air guide, if the difference is greater than zero and less than a preset temperature threshold, the second air guide is controlled to be between the first position and the second position and opposite to the air outlet; if the return air temperature is greater than or equal to the set temperature, the first air guide is controlled to guide air towards the front of the air outlet, and the second air guide is controlled to be between the first position and the second position and opposite to the air outlet.

[0016] In some examples of the present invention, when the first air guide is performing left and right sweeping and the second air guide is between the first position and the second position and opposite to the air outlet, if the return air temperature is greater than or equal to the set temperature, the first air guide is controlled to guide air towards the front of the air outlet.

[0017] According to the anti-backflow control device for an air conditioner of the present invention, the housing of the air conditioner defines an air outlet, and a first air guide is provided at the air outlet. The first air guide rotates about a vertical axis to change the air outlet direction. The air conditioner includes a second air guide, which is movably disposed outside the air outlet. The second air guide moves between a first position and a second position. In the first position, the second air guide cooperates with a first side of the air outlet to guide air towards a second side of the air outlet. In the second position, the second air guide cooperates with the second side of the air outlet to guide air towards the first side of the air outlet. The air guide defines an air outlet channel between the first position and the second position, between the second air guide and the first side of the air outlet, and between the second air guide and the second side of the air outlet. The anti-backflow control device includes: a determining module, used to determine the relationship between the return air temperature and the set temperature when the air conditioner is determined to be operating in anti-direct-blowing mode; and a control module, used to control the first air guide to perform left and right sweeping when the return air temperature is lower than the set temperature, and to determine whether to control the second air guide to move synchronously with the first air guide based on the difference between the set temperature and the return air temperature.

[0018] According to the anti-backflow control device for air conditioners of the present invention, backflow can be avoided in the anti-direct-blowing mode, thereby improving the temperature uniformity throughout the room, enhancing the user experience, and eliminating the need for temperature compensation, thus reducing the probability of condensation.

[0019] The air conditioner according to the present invention includes a memory, a processor, and an air conditioner anti-back-temperature control program stored in the memory and executable on the processor. When the processor executes the air conditioner anti-back-temperature control program, it implements the above-described air conditioner anti-back-temperature control method.

[0020] According to the present invention, the air conditioner can avoid the phenomenon of temperature rebound in the anti-direct-blowing mode, thereby making the temperature uniformity in all parts of the room better, improving the user experience, and eliminating the need for temperature compensation, thus reducing the probability of condensation.

[0021] According to the present invention, a computer-readable storage medium thereon stores an anti-back-temperature control program for an air conditioner, which, when executed by a processor, implements the above-described anti-back-temperature control method for an air conditioner.

[0022] According to the computer-readable storage medium of the present invention, the air conditioner can avoid the phenomenon of temperature rebound in the anti-direct-blowing mode, thereby making the temperature uniformity in all parts of the room better, improving the user experience, and eliminating the need for temperature compensation, thus reducing the probability of condensation.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of the default anti-direct-blow state of an air conditioner according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the first operating state of an air conditioner according to an embodiment of the present invention;

[0027] Figure 3 This is another schematic diagram of the first operating state of the air conditioner according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the second operating state of an air conditioner according to an embodiment of the present invention;

[0029] Figure 5 This is another schematic diagram of the second operating state of the air conditioner according to an embodiment of the present invention;

[0030] Figure 6 This is a flowchart of an air conditioner anti-backheat control method according to an embodiment of the present invention;

[0031] Figure 7 This is a block diagram of an air conditioner's anti-backheat control device according to an embodiment of the present invention;

[0032] Figure 8 This is a flowchart of a specific embodiment of the anti-backflow control method for an air conditioner according to an embodiment of the present invention;

[0033] Figure 9 This is an improved temperature curve diagram according to an embodiment of the present invention;

[0034] Figure 10 This is a block diagram of a processor, memory, communication interface, and communication bus according to an embodiment of the present invention.

[0035] Figure label:

[0036] Air conditioner 100;

[0037] Housing 10; Air outlet 11; First air guide 12; Second air guide 13; Air outlet duct 14; Oscillator 15;

[0038] Anti-backheat control device 20; determination module 21; control module 22;

[0039] Processor 1201; Communication interface 1202; Memory 1203; Communication bus 1204. Detailed Implementation

[0040] The embodiments of this application are described in detail below. Examples of the embodiments described in this application are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0041] The following is for reference. Figures 1-10 The present invention describes an anti-backheating control method and an anti-backheating control device 20 for an air conditioner 100 according to an embodiment of the present invention.

[0042] like Figures 1-5 As shown, the air conditioner 100 according to an embodiment of the present invention includes: a housing 10, a first air guide 12, and a second air guide 13.

[0043] The housing 10 defines an air outlet 11, through which the air generated by the air conditioner 100 can be blown into the room. A first air guide 12 is disposed at the air outlet 11 and can rotate around a vertical axis. The first air guide 12 can change the air outlet direction of the air conditioner 100. A second air guide 13 is disposed on the outside of the air outlet 11, that is, on the side of the air outlet 11 away from the air conditioner 100. The second air guide 13 can move relative to the air conditioner 100. Specifically, the second air guide 13 can move between a second position and a first position.

[0044] Specifically, when the second air guide 13 is in the first position, it can cooperate with the first side of the air outlet 11 to guide air towards the second side of the air outlet 11. When the second air guide 13 is in the second position, it can cooperate with the second side of the air outlet 11 to guide air towards the first side of the air outlet 11. Between the first and second positions, an air outlet channel 14 is defined between the second air guide 13 and the first side of the air outlet 11, and the air outlet channel 14 is also defined between the second air guide 13 and the second side of the air outlet 11.

[0045] Understandably, the air generated by the air conditioner 100 can be blown into the room through the air outlet 11 and the air outlet duct 14. Figure 1 As shown in the left and right directions, the first side of the air outlet 11 can be the left side of the air outlet 11, and the second side of the air outlet 11 can be the right side of the air outlet 11. That is, the first side and the second side of the air outlet 11 can be the two sides of the air outlet 11 in the width direction.

[0046] like Figure 7 As shown, the anti-backheat control device 20 according to an embodiment of the present invention includes: a determination module 21 and a control module 22.

[0047] The determining module 21 can be used to determine the relationship between the set temperature and the return air temperature when the air conditioner 100 is operating in the anti-direct blowing mode. When the return air temperature is lower than the set temperature, the control module 22 can be used to control the first air guide 12 to swing left and right. In addition, the control module 22 can also determine whether to control the second air guide 13 to move synchronously with the first air guide 12 based on the difference between the set temperature and the return air temperature.

[0048] To simplify the description, the difference between the set temperature and the return air temperature will be expressed as the difference ΔT.

[0049] It should be explained that when the air conditioner 100 is operating in anti-direct-blow mode, the determining module 21 can determine the relationship between the set temperature and the return air temperature. Furthermore, the determining module 21 can transmit the determined relationship between the set temperature and the return air temperature to the control module 22. The control module 22 can control the first air guide 12 to rotate around the vertical axis according to the relationship between the set temperature and the return air temperature to achieve the left and right sweeping function. In addition, the control module 22 can also determine whether to control the second air guide 13 to move synchronously with the first air guide 12 based on the difference ΔT.

[0050] The aforementioned synchronous movement can be understood as follows: viewed from above the air conditioner 100 (i.e., from above the air conditioner 100 to below the air conditioner 100), when the first air guide 12 rotates clockwise, in... Figure 1 As shown in the left and right directions, the second air guide 13 can move to the left to engage with the first side of the air outlet 11. When the first air guide 12 rotates counterclockwise, the second air guide 13 can move to the right to engage with the second side of the air outlet 11.

[0051] In other words, from the perspective of looking down at the air conditioner 100, if the end of the first air guide 12 furthest from the air conditioner 100 is close to... Figure 1 As shown on the left, the second air guide 13 can be located in the first position. At this time, the second air guide 13 can cooperate with the first side of the air outlet 11. If the end of the first air guide 12 away from the air conditioner 100 is close to... Figure 1 As shown on the right side, the second air guide 13 can be located in the second position, at which time the second air guide 13 can cooperate with the second side of the air outlet 11.

[0052] Optionally, the cooperation between the second air guide 13 and the first side of the air outlet 11 can be overlapping, staggered, or abutting, but is not limited to the above cooperation methods. The purpose of the cooperation is to allow the air generated by the air conditioner 100 to be blown out from the second side of the air outlet 11, so as to avoid the airflow blowing directly to the user. At this time, the airflow will bypass the user to prevent cold air from blowing directly, and will not block the airflow. This will enable the airflow to be large and the air volume to be sufficient, which can avoid the phenomenon of backheating.

[0053] Furthermore, when the second air guide 13 moves to the second position, the cooperation between the second air guide 13 and the second side of the air outlet 11 can be overlapping, staggered, or abutting, but is not limited to the above cooperation methods. The purpose of the cooperation between the second air guide 13 and the second side of the air outlet 11 is to allow the air generated by the air conditioner 100 to be blown out from the first side of the air outlet 11, so as to avoid the airflow blowing directly to the user. At this time, the airflow will bypass the user to prevent cold air from blowing directly, and at the same time, it will not block the airflow, so that the airflow is large and the air volume is sufficient, and it can also avoid the phenomenon of back temperature.

[0054] Furthermore, when the second air guide 13 does not move synchronously with the first air guide 12, the second air guide 13 can be located between the first position and the second position, and the second air guide 13 can be located opposite the air outlet 11 (i.e., at...). Figure 1 As shown in the front-back direction, the second air guide 13 can be located directly in front of the air outlet 11. At this time, the airflow can be discharged from both sides of the second air guide 13, thereby avoiding the airflow blowing directly on the user. At the same time, the airflow blown out from both sides can form an enveloping airflow effect, which can quickly and evenly reduce the indoor air temperature, and can also quickly cool the wall, solving the furnace heat effect in hot summer.

[0055] Optionally, the return air temperature can be the temperature at the return air vent of the air conditioner 100. The first air guide 12 may include a plurality of air guide plates extending in the height direction of the air conditioner 100. The second air guide 13 may be constructed as a single integral second air guide 13, or the second air guide 13 may be constructed as a plurality of second air guides 13 (e.g., two second air guides 13). The plurality of second air guides 13 may move synchronously after being combined, and airflow cannot flow between two adjacent second air guides 13.

[0056] In existing technologies, air conditioners are prone to backheating in anti-direct-blow mode, resulting in poor temperature uniformity throughout the room and affecting the user experience.

[0057] In this application, the relationship between the return air temperature of the air conditioner 100 and the set temperature of the air conditioner 100 is determined by the determining module 21. When the return air temperature is lower than the set temperature, the control module 22 can control the first air guide 12 to swing left and right, and can control the working mode of the second air guide 13 according to the difference ΔT. This can avoid the phenomenon of temperature rebound in the air conditioner 100 in the anti-direct blowing mode, make the temperature uniformity of various parts of the room better, reduce the temperature difference between the air outlet 11 and the room, improve the user experience, and reduce the probability of condensation without the need for temperature compensation. In addition, it can also avoid the airflow blowing directly on the user, which can improve the user experience.

[0058] Therefore, the anti-back-temperature control method of this application can prevent the air conditioner 100 from experiencing back-temperature phenomena in the anti-direct-blowing mode, thereby ensuring better temperature uniformity throughout the room, improving the user experience, and eliminating the need for temperature compensation, thus reducing the probability of condensation.

[0059] As some embodiments of the present invention, determining whether to control the second air guide 13 to move synchronously with the first air guide 12 based on the difference ΔT may include: when the difference ΔT is greater than or equal to a preset temperature threshold, the second air guide 13 may be controlled to move synchronously with the first air guide 12.

[0060] Understandably, the specific value of the preset temperature threshold can be set in advance. For example, the preset temperature threshold can be set to 2 degrees Celsius. The determining module 21 can be used to determine the difference ΔT. When the difference ΔT is greater than or equal to 2 degrees Celsius (i.e., when the difference ΔT is greater than or equal to the preset temperature threshold), the control module 22 can control the second air guide 13 to move synchronously with the first air guide 12 (e.g., ...). Figure 4 and Figure 5 (As shown).

[0061] The synchronous movement of the second air guide 13 following the first air guide 12 can be understood as follows: from the perspective of looking down at the air conditioner 100, when the first air guide 12 rotates clockwise, Figure 1 As shown in the left and right directions, the second air guide 13 can move to the left to engage with the first side of the air outlet 11. When the first air guide 12 rotates counterclockwise, the second air guide 13 can move to the right to engage with the second side of the air outlet 11.

[0062] In other words, from the perspective of looking down at the air conditioner 100, if the end of the first air guide 12 furthest from the air conditioner 100 is close to... Figure 1 As shown on the left side, the second air guide 13 can be located in the first position. At this time, the second air guide 13 can cooperate with the first side of the air outlet 11 to guide air towards the second side of the air outlet 11. If the end of the first air guide 12 away from the air conditioner 100 is close to... Figure 1 As shown on the right side, the second air guide 13 can be located in the second position. At this time, the second air guide 13 can cooperate with the second side of the air outlet 11 to guide air towards the first side of the air outlet 11.

[0063] Therefore, the second air guide 13 and the first air guide 12 can simultaneously sweep air to cool the room, thereby avoiding the phenomenon of temperature rebound in the air conditioner 100 in the anti-direct blowing mode, and making the temperature uniformity of various parts of the room better.

[0064] As some embodiments of the present invention, when the difference ΔT is greater than zero and less than a preset temperature threshold, such as Figure 2 and Figure 3 As shown, the second air guide 13 can be controlled to be between the first position and the second position, and the second air guide 13 can be controlled to correspond to the air outlet 11.

[0065] For example, if the preset temperature threshold is 2 degrees Celsius, when the difference ΔT is 1 degree Celsius, the control module 22 can control the second air guide 13 to be between the first and second positions, and the control module 22 can control the second air guide 13 to correspond with the air outlet 11. At this time, the airflow can exit from both sides of the second air guide 13, thereby avoiding direct airflow to the user, which can quickly and evenly reduce the indoor air temperature, prevent the air conditioner 100 from experiencing heat recirculation in anti-direct-blow mode, and also quickly cool the wall, solving the furnace heat effect in hot summer.

[0066] As some embodiments of the present invention, determining that the air conditioner 100 operates in the anti-direct-blow mode may include: determining that the air conditioner 100 operates in the anti-direct-blow mode when the return air temperature is equal to the set temperature.

[0067] Specifically, when the determining module 21 determines that the set temperature and the return air temperature are equal, the air conditioner 100 can operate in anti-direct-blow mode. This ensures that the air conditioner 100 enters anti-direct-blow mode at a reasonable time, entering the anti-direct-blow mode while ensuring the indoor temperature reaches the user's desired temperature, thus preventing direct airflow onto the user and improving the product's automation and intelligence.

[0068] As some embodiments of the present invention, when the air conditioner 100 is operating in anti-direct-blowing mode, such as Figure 1 As shown, the first air guide 12 can be controlled to guide air in front of the air outlet 11, the louvers 15 of the air conditioner 100 can be controlled to guide air upward, and the second air guide 13 can be controlled to be between the first position and the second position and opposite to the air outlet 11.

[0069] Specifically, the fact that the first air guide 12 is oriented directly forward can be understood as the first air guide 12 and... Figure 1 As shown, the front and rear directions are parallel, and the control module 22 can control the first air guide 12 to rotate to be parallel to the front and rear directions. Figure 1 The angle shown is parallel in the front and back directions, and the control module 22 can control the rotation of the louver 15 of the air conditioner 100 to guide the air upward. The control module 22 can also control the second air guide 13 to be between the first position and the second position, and can control the second air guide 13 to be located directly in front of the air outlet 11. At this time, the airflow can be discharged from both sides of the second air guide 13, and the airflow blown from both sides can form a wrap-around airflow effect, which can prevent the air conditioner 100 from experiencing backheating in the anti-direct-blow mode, thereby making the temperature uniformity in all parts of the room better and improving the user experience.

[0070] As some embodiments of the present invention, when the air conditioner 100 is operating in anti-direct-blowing mode, such as Figure 1As shown, if the return air temperature is greater than or equal to the set temperature, the first air guide 12 can be kept pointing directly in front of the air outlet 11, and the louvers 15 of the air conditioner 100 can be kept pointing upwards. The second air guide 13 can also be kept between the first and second positions, and can correspond to the air outlet 11. It can be understood that when the air conditioner 100's operating mode is switched to anti-direct-blow mode, if the return air temperature is greater than or equal to the set temperature, it indicates that there is no significant temperature recovery indoors. In this case, the air conditioner 100 can continue to operate in the above state.

[0071] As some embodiments of the present invention, when the first air guide 12 performs left and right sweeping air and the second air guide 13 moves synchronously with the first air guide 12 (e.g.) Figure 4 and Figure 5 As shown), if the difference ΔT is greater than zero and the difference ΔT is less than the preset temperature threshold, then the control module 22 can control the second air guide 13 to move to a position between the first position and the second position, and the control module 22 can control the second air guide 13 to move to the front of the air outlet 11 (as shown). Figure 2 and Figure 3 (As shown).

[0072] If the return air temperature is greater than or equal to the set temperature, the control module 22 can control the first air guide 12 to direct airflow towards the front of the air outlet 11, and the control module 22 can control the second air guide 13 to be positioned between the first and second positions and corresponding to the air outlet 11 (e.g., Figure 1 (As shown).

[0073] Therefore, the working state of the first air guide 12 and the second air guide 13 can be automatically controlled according to the specific numerical relationship between the set temperature and the return air temperature, so that the temperature uniformity in various parts of the room is better, and the degree of automation and intelligence of the air conditioner 100 can be higher.

[0074] Furthermore, when the first air guide 12 is performing left and right sweeping, and the second air guide 13 is in a position between the first and second positions and opposite to the air outlet 11 (e.g.) Figure 2 and Figure 3 As shown), if the return air temperature is greater than or equal to the set temperature, the control module 22 can control the first air guide 12 to guide air towards the front of the air outlet 11 (as shown). Figure 1 (As shown). This can improve the uniformity of temperature throughout the room and increase the automation and intelligence of the air conditioner 100.

[0075] Optionally, as some embodiments, the second air guide 13 may have an air guide surface, which may be constructed as an arc-shaped surface protruding towards the outside of the housing 10. The second air guide 13 may be kept directly opposite the air outlet 11. The air guide surface may be used to guide the airflow blown out of the air outlet 11. After the air guide surface is constructed as an arc-shaped surface, the loss of airflow velocity during the airflow guidance process of the second air guide 13 can be reduced, thereby improving the air supply efficiency of the air conditioner 100.

[0076] Optionally, as some embodiments, the second air guide 13 may include an inner air guide plate and an outer air guide plate. The inner air guide plate may be provided with the air guiding surface in the above embodiments, and the outer air guide plate is located outside the inner air guide plate. A cavity is defined between the outer air guide plate and the inner air guide plate. By providing the second air guide 13 with two parts, the inner air guide plate and the outer air guide plate, the manufacturing difficulty of the second air guide 13 can be reduced. Furthermore, by providing a cavity between the inner air guide plate and the outer air guide plate, the weight of the second air guide 13 can be reduced, thereby reducing the overall weight of the air conditioner 100 and saving the cost of the air conditioner 100.

[0077] The outer air guide plate and the inner air guide plate are fitted at their ends. The ends can be the outer periphery of the outer air guide plate and the outer periphery of the inner air guide plate. Multiple first connecting parts can be provided on the outer periphery of the outer air guide plate, and multiple second connecting parts that cooperate with the first connecting parts are provided on the outer periphery extension of the inner air guide plate. The first connecting parts and the second connecting parts can be fixed by snap-fit, screw connection or other means to fix the outer air guide plate and the inner air guide plate to form a complete air guide plate structure.

[0078] Furthermore, the snap-fit ​​mechanism between the outer and inner air guide plates reduces the difficulty of their assembly. The snap-fit ​​is secure, and the first and second connecting parts can be formed on the inner and outer air guide plates respectively, making the forming process easy. In the subsequent assembly process of the inner and outer air guide plates, the snap-fit ​​mechanism can eliminate the need for separate assembly steps, which helps to improve the production pace.

[0079] According to some embodiments of the present invention, the outer surface of the outer air guide plate is constructed as a convex arc surface, which can have the same roundness as the outer surface of the housing 10, so that the second air guide 13 overlaps or cooperates with the housing 10 in the closed air outlet 11 state to form an appearance surface with the same arc, thereby improving the aesthetics of the second air guide 13 in the closed air outlet 11 state.

[0080] Figure 6 The flowchart below shows an air conditioner anti-backflow control method according to an embodiment of the present invention. The air conditioner anti-backflow control device described above can implement the anti-backflow control method. The anti-backflow control method is applied to an air conditioner, which is the air conditioner described above.

[0081] like Figures 1-5 As shown, the air conditioner according to an embodiment of the present invention includes: a housing, a first air guide, and a second air guide.

[0082] The housing defines an air outlet, through which the air generated by the air conditioner can be blown into the room. A first air guide is located at the air outlet and can rotate around a vertical axis. The first air guide can change the air outlet direction of the air conditioner. A second air guide is located on the outside of the air outlet, that is, on the side of the air outlet away from the air conditioner. The second air guide is movable relative to the air conditioner. Specifically, the second air guide can move between a second position and a first position.

[0083] Specifically, when the second air guide is in the first position, it engages with the first side of the air outlet to guide airflow towards the second side of the air outlet. When the second air guide is in the second position, it engages with the second side of the air outlet to guide airflow towards the first side of the air outlet. Between the first and second positions, an air outlet channel is defined between the second air guide and the first side of the air outlet, and also between the second air guide and the second side of the air outlet.

[0084] It is understandable that the air generated by the air conditioner can be blown into the room through the air outlet and air duct. Figure 1 As shown in the left and right directions, the first side of the air outlet can be the left side of the air outlet, and the second side of the air outlet can be the right side of the air outlet. That is, the first side and the second side of the air outlet can be the two sides of the air outlet in the width direction.

[0085] like Figure 6 As shown, the backheat control method includes the following steps:

[0086] S1, when determining that the air conditioner is operating in anti-direct-blowing mode, determine the relationship between the return air temperature and the set temperature.

[0087] S2, when the return air temperature is lower than the set temperature, control the first air guide to perform left and right sweeping, and determine whether to control the second air guide to follow the first air guide to move synchronously based on the difference △T.

[0088] The determination module can determine the relationship between the set temperature and the return air temperature when the air conditioner is operating in anti-direct-blow mode. When the return air temperature is lower than the set temperature, the control module can control the first air guide to swing left and right. In addition, the control module can also determine whether to control the second air guide to move synchronously with the first air guide based on the difference ΔT.

[0089] It should be explained that when the air conditioner is set to operate in anti-direct-blowing mode, the determining module can determine the relationship between the set temperature and the return air temperature. Furthermore, the determining module can transmit the determined relationship between the set temperature and the return air temperature to the control module. The control module can control the first air guide to rotate around the vertical axis according to the relationship between the set temperature and the return air temperature to achieve the left and right air sweeping function. In addition, the control module can also determine whether to control the second air guide to move synchronously with the first air guide based on the difference ΔT.

[0090] The aforementioned synchronous motion can be understood as follows: viewed from above (i.e., from above the air conditioner to below it), when the first air guide rotates clockwise, in... Figure 1 As shown in the left and right directions, the second air guide can move to the left to engage with the first side of the air outlet. When the first air guide rotates counterclockwise, the second air guide can move to the right to engage with the second side of the air outlet.

[0091] In other words, from the perspective of looking down at the air conditioner, if the end of the first air guide component furthest from the air conditioner is close to... Figure 1 As shown on the left, the second air guide can be located in the first position. At this time, the second air guide can cooperate with the first side of the air outlet. If the end of the first air guide furthest from the air conditioner is close to... Figure 1 As shown on the right, the second air guide can be located in the second position, at which time the second air guide can cooperate with the second side of the air outlet.

[0092] Optionally, the cooperation between the second air guide and the first side of the air outlet can be overlapping, staggered, or abutting, but is not limited to the above cooperation methods. The purpose of the cooperation is to make the air generated by the air conditioner blow out from the second side of the air outlet to avoid the airflow blowing directly to the user. At this time, the airflow will bypass the user to prevent cold air from blowing directly, and will not block the airflow. This will make the airflow large and the air volume sufficient, and can avoid the phenomenon of backheating.

[0093] Furthermore, when the second air guide moves to the second position, the cooperation between the second air guide and the second side of the air outlet can be overlapping, staggered, or abutting, but is not limited to the above cooperation methods. The purpose of the cooperation between the second air guide and the second side of the air outlet is to make the air generated by the air conditioner blow out from the first side of the air outlet, so as to avoid the airflow blowing directly to the user. At this time, the airflow will bypass the user to prevent cold air from blowing directly, and at the same time, it will not block the airflow, so that the airflow is large and the air volume is sufficient, and it can also avoid the phenomenon of back temperature.

[0094] Furthermore, when the second air guide does not move synchronously with the first air guide, the second air guide can be located between the first and second positions, and the second air guide can be located opposite the air outlet (i.e., in...). Figure 1As shown in the front-back direction, the second air guide can be located directly in front of the air outlet. At this time, the airflow can be discharged from both sides of the second air guide, thus avoiding the airflow blowing directly on the user. At the same time, the airflow blown from both sides can form an enveloping airflow effect, which can quickly and evenly reduce the indoor air temperature, and can also quickly cool the wall, solving the furnace heat effect in hot summer.

[0095] Optionally, the return air temperature can be the temperature at the return air vent of the air conditioner. The first air guide can include multiple air guide plates extending in the height direction of the air conditioner. The second air guide can be constructed as a single second air guide, or the second air guide can be constructed as multiple second air guides (e.g., two second air guides). Multiple second air guides can move synchronously after being combined, and airflow cannot pass between two adjacent second air guides.

[0096] In existing technologies, air conditioners are prone to backheating in anti-direct-blow mode, resulting in poor temperature uniformity throughout the room and affecting the user experience.

[0097] In this application, the relationship between the return air temperature and the set temperature of the air conditioner is determined by the determining module. When the return air temperature is lower than the set temperature, the control module can control the first air guide to swing left and right, and can control the working mode of the second air guide according to the difference ΔT. This can avoid the air conditioner from experiencing temperature rebound in the anti-direct-blow mode, resulting in better temperature uniformity throughout the room, reducing the temperature difference between the air outlet and the room, improving the user experience, eliminating the need for temperature compensation, reducing the probability of condensation, and preventing airflow from blowing directly on the user, thus improving the user experience.

[0098] Therefore, the anti-backflow control method of this application can prevent the air conditioner from experiencing backflow in anti-direct-blowing mode, thereby ensuring better temperature uniformity throughout the room, improving the user experience, and eliminating the need for temperature compensation, thus reducing the probability of condensation.

[0099] In some embodiments of the present invention, determining whether to control the second air guide to move synchronously with the first air guide based on the difference ΔT may include: when the difference ΔT is greater than or equal to a preset temperature threshold, the second air guide may be controlled to move synchronously with the first air guide.

[0100] Understandably, the specific value of the preset temperature threshold can be set in advance. For example, the preset temperature threshold can be set to 2 degrees Celsius. The determining module can be used to determine the difference ΔT. When the difference ΔT is greater than or equal to 2 degrees Celsius (i.e., when the difference ΔT is greater than or equal to the preset temperature threshold), the control module can control the second air guide to move synchronously with the first air guide (e.g., ...). Figure 4 and Figure 5 (As shown).

[0101] The synchronous movement of the second air guide component following the first air guide component can be understood as follows: from the perspective of looking down at the air conditioner, when the first air guide component rotates clockwise, in... Figure 1 As shown in the left and right directions, the second air guide can move to the left to engage with the first side of the air outlet. When the first air guide rotates counterclockwise, the second air guide can move to the right to engage with the second side of the air outlet.

[0102] In other words, from the perspective of looking down at the air conditioner, if the end of the first air guide component furthest from the air conditioner is close to... Figure 1 As shown on the left, the second air guide can be located in the first position. In this position, the second air guide can cooperate with the first side of the air outlet to guide air towards the second side of the air outlet. If the end of the first air guide furthest from the air conditioner is close to... Figure 1 As shown on the right, the second air guide can be located in the second position. At this time, the second air guide can cooperate with the second side of the air outlet to guide the air towards the first side of the air outlet.

[0103] Therefore, the second air guide and the first air guide can simultaneously sweep air to cool the room, thus avoiding the phenomenon of temperature rebound in the anti-direct-blow mode of the air conditioner and making the temperature uniformity of the room better.

[0104] In some embodiments of the present invention, when the difference ΔT is greater than zero and less than a preset temperature threshold, such as Figure 2 and Figure 3 As shown, the second air guide can be controlled to be between the first position and the second position, and the second air guide can be controlled to correspond to the air outlet.

[0105] For example, if the preset temperature threshold is 2 degrees Celsius, when the temperature difference ΔT is 1 degree Celsius, the control module can control the second air guide to be between the first and second positions, and the control module can control the second air guide to correspond to the air outlet. At this time, the airflow can exit from both sides of the second air guide, thereby avoiding direct airflow to the user, quickly and evenly reducing the indoor air temperature, preventing the air conditioner from experiencing temperature rebound in anti-direct-blow mode, and also quickly cooling the wall, solving the furnace heat effect in hot summers.

[0106] In some embodiments of the present invention, determining that the air conditioner operates in anti-direct-blow mode may include: determining that the air conditioner operates in anti-direct-blow mode when the return air temperature is equal to the set temperature.

[0107] Specifically, when the determining module confirms that the set temperature and the return air temperature are equal, the air conditioner can operate in anti-direct-blow mode. This allows the air conditioner to enter anti-direct-blow mode at a more reasonable time, ensuring the indoor temperature reaches the user's desired temperature, thus preventing direct airflow onto the user and improving the product's automation and intelligence.

[0108] In some embodiments of the present invention, when the air conditioner is operating in anti-direct-blow mode, such as Figure 1 As shown, the first air guide can be controlled to guide air directly in front of the air outlet, and the air conditioner's louvers can be controlled to guide air upwards. The second air guide can be controlled to be between the first and second positions and opposite to the air outlet.

[0109] In this context, the first air guide component's orientation towards the front can be understood as the first air guide component and... Figure 1 As shown, the front and rear directions are parallel, and the control module can control the first air guide to rotate to be parallel to the front and rear directions. Figure 1 The control module shows a parallel angle in the front and rear directions, and it can control the rotation of the air conditioner's louvers to guide air upwards. The control module can also control the second air guide to be positioned between the first and second positions, and can position the second air guide directly in front of the air outlet. At this time, the airflow can exit from both sides of the second air guide, and the airflow from both sides can form a wraparound airflow effect, preventing the air conditioner from experiencing backheating in anti-direct-blow mode. This results in better temperature uniformity throughout the room, improving the user experience.

[0110] In some embodiments of the present invention, when the air conditioner is operating in anti-direct-blow mode, such as Figure 1 As shown, if the return air temperature is greater than or equal to the set temperature, the first air guide component can be kept pointing directly in front of the air outlet, and the air conditioner's louvers can be kept pointing upwards. The second air guide component can also be kept between the first and second positions, and it can be kept aligned with the air outlet. It can be understood that when the air conditioner's operating mode is switched to anti-direct-blow mode, if the return air temperature is greater than or equal to the set temperature, it indicates that there is no significant temperature increase indoors. In this case, the air conditioner can continue to operate in the above state.

[0111] In some embodiments of the present invention, when the first air guide performs left and right sweeping air and the second air guide moves synchronously with the first air guide (e.g.) Figure 4 and Figure 5 As shown), if the difference ΔT is greater than zero and the difference ΔT is less than the preset temperature threshold, the control module can control the second air guide to move to a position between the first and second positions, and the control module can control the second air guide to move to the front of the air outlet (e.g., Figure 2 and Figure 3 (As shown).

[0112] If the return air temperature is greater than or equal to the set temperature, the control module can control the first air guide to direct airflow directly in front of the air outlet, and the control module can control the second air guide to be positioned between the first and second positions and corresponding to the air outlet (e.g., Figure 1 (As shown).

[0113] Therefore, the working status of the first and second air guide components can be automatically controlled according to the specific numerical relationship between the set temperature and the return air temperature, which can make the temperature uniformity in various parts of the room better, and can make the air conditioner more automated and intelligent.

[0114] Furthermore, when the first air guide is performing left and right sweeping, and the second air guide is positioned between the first and second positions and opposite to the air outlet (e.g.) Figure 2 and Figure 3 As shown), if the return air temperature is greater than or equal to the set temperature, the control module can control the first air guide component to direct airflow directly in front of the air outlet (e.g., Figure 1 (As shown). This can improve the uniformity of temperature throughout the room and increase the automation and intelligence of the air conditioner.

[0115] Optionally, as some embodiments, the second air guide may have an air guide surface, which may be constructed as an arc-shaped surface convex toward the outside of the housing. The second air guide may be kept facing the air outlet. The air guide surface may be used to guide the airflow blown out of the air outlet. After the air guide surface is constructed as an arc-shaped surface, the loss of airflow velocity during the process of guiding the airflow can be reduced, thereby improving the air supply efficiency of the air conditioner.

[0116] Optionally, as some embodiments, the second air guide may include an inner air guide plate and an outer air guide plate. The inner air guide plate may be provided with the air guiding surface in the above embodiments, and the outer air guide plate is located outside the inner air guide plate. A cavity is defined between the outer air guide plate and the inner air guide plate. By providing the second air guide with two parts, the inner air guide plate and the outer air guide plate, the manufacturing difficulty of the second air guide can be reduced. Furthermore, by providing a cavity between the inner air guide plate and the outer air guide plate, the weight of the second air guide can be reduced, thereby reducing the overall weight of the air conditioner and saving the cost of the air conditioner.

[0117] The outer air guide plate and the inner air guide plate are fitted at their ends. The ends can be the outer periphery of the outer air guide plate and the outer periphery of the inner air guide plate. Multiple first connecting parts can be provided on the outer periphery of the outer air guide plate, and multiple second connecting parts that cooperate with the first connecting parts are provided on the outer periphery extension of the inner air guide plate. The first connecting parts and the second connecting parts can be fixed by snap-fit, screw connection or other means to fix the outer air guide plate and the inner air guide plate to form a complete air guide plate structure.

[0118] Furthermore, the snap-fit ​​mechanism between the outer and inner air guide plates reduces the difficulty of their assembly. The snap-fit ​​is secure, and the first and second connecting parts can be formed on the inner and outer air guide plates respectively, making the forming process easy. In the subsequent assembly process of the inner and outer air guide plates, the snap-fit ​​mechanism can eliminate the need for separate assembly steps, which helps to improve the production pace.

[0119] According to some embodiments of the present invention, the outer surface of the outer air guide plate is constructed as a convex arc surface, which can have the same roundness as the outer surface of the housing, so that the second air guide member overlaps or fits with the housing in the closed air outlet state to form an appearance surface with the same arc, thereby improving the aesthetics of the second air guide member in the closed air outlet state.

[0120] Specifically, such as Figure 8 As shown, in a specific embodiment of the present invention, the above-described anti-backheat control method may include the following steps:

[0121] S01, When determining that the air conditioner is operating in anti-direct-blowing mode, determine the relationship between the return air temperature and the set temperature.

[0122] S02, determine whether the return air temperature is greater than or equal to the set temperature;

[0123] S03, control the first air guide to guide air towards the front of the air outlet, control the air conditioner's louvers to guide air upward, and control the second air guide to be between the first position and the second position and opposite to the air outlet;

[0124] S04, determine whether the difference ΔT is greater than zero and less than the preset temperature threshold;

[0125] S05, control the first air guide to perform left and right sweeping, and control the second air guide to be between the first position and the second position and opposite to the air outlet;

[0126] S06, determine whether the difference ΔT is greater than or equal to the preset temperature threshold;

[0127] S07, control the first air guide to perform left and right sweeping, and control the second air guide to follow the first air guide to move synchronously.

[0128] In step S02, if the return air temperature is greater than or equal to the set temperature, proceed to step S03; if the return air temperature is less than the set temperature, proceed to step S04. In step S04, if the difference ΔT is greater than zero and less than the preset temperature threshold, proceed to step S05; otherwise, proceed to step S06. In step S06, if the difference ΔT is greater than or equal to the preset temperature threshold, proceed to step S07.

[0129] Optionally, in step S03, the fan speed of the air conditioner can be n0; in step S05, the fan speed of the air conditioner can be n1; and in step S07, the fan speed of the air conditioner can be n2. Furthermore, n1 can be greater than or equal to n2, and n0 can be the default fan speed of the air conditioner.

[0130] In some specific embodiments of the present invention, when the user enters the anti-direct-blow mode in the cooling mode, or when the return air temperature is equal to the set temperature, the air conditioner enters the default anti-direct-blow state, that is, the first air guide is controlled to guide the air in front of the air outlet, the air conditioner's louvers are controlled to guide the air upward, and the second air guide is controlled to be between the first position and the second position and opposite to the air outlet. At this time, the fan speed of the air conditioner can be the default speed n0.

[0131] If the return air temperature is greater than or equal to the set temperature, the air conditioner will maintain the default anti-direct-blowing mode (e.g., Figure 1 As shown), the first air guide is kept facing the front of the air outlet, the air conditioner's louvers are kept facing upwards, and the second air guide is kept between the first and second positions and opposite to the air outlet.

[0132] Understandably, after entering the anti-direct-blow mode, the indoor temperature will gradually rise over time, resulting in a temperature difference ΔT between the set temperature and the return air temperature. When the difference ΔT is greater than zero and less than the preset temperature threshold, it indicates that the indoor temperature has just begun to rise, and at this point, the first working state can be entered (e.g., ...). Figure 2 and Figure 3 As shown), the system controls the first air guide to perform left and right sweeping, and can control the second air guide to be between the first and second positions and opposite to the air outlet, maintaining the first working state until the return air temperature is greater than or equal to the set temperature. When the return air temperature is greater than or equal to the set temperature, the air conditioner returns to the default anti-direct-blow state (e.g., Figure 1 (As shown).

[0133] If the difference ΔT is greater than zero and less than the preset temperature threshold (which is not true), it means that the difference ΔT is greater than or equal to the preset temperature threshold, the return air temperature is too low, and the air conditioner is prone to temperature rebound after frequency reduction. In this case, it can enter the second working state (e.g., Figure 4 and Figure 5As shown), this means controlling the first air guide to swing left and right, and controlling the second air guide to move synchronously with the first air guide to cool the room. In this working mode, the first and second air guides need to maintain the same direction and move synchronously to ensure that the air generated by the air conditioner is delivered along the wall and does not blow onto the user's main activity area, i.e., anti-direct blowing in the swing state. If the air conditioner operates until the temperature difference ΔT is greater than zero and less than the preset temperature threshold, the air conditioner can enter the first working state (e.g., ...). Figure 2 and Figure 3 As shown), if the air conditioner operates until the return air temperature is greater than or equal to the set temperature, the air conditioner can restore the default anti-direct-blowing state (e.g., Figure 1 (As shown).

[0134] Optionally, the back-temperature control device and method described in this application are mainly applied to the cooling mode, but they can also be applied to the heating mode or other operating modes.

[0135] It should be noted that, in order to avoid frequent switching between the first and / or second air guides in the anti-direct-blow mode, the specific value of the difference △T needs to be set based on the test data.

[0136] The logic of the embodiments of the present invention can be understood by referring to Tables 1 and 2 below.

[0137]

[0138] Table 1. Experimental data on protection against direct airflow

[0139]

[0140] Table 2 Right out of the wind Experimental data

[0141] Taking a set temperature of 26 degrees Celsius and a difference ΔT of 2 degrees Celsius as an example, the default switching condition for preventing direct airflow is 20 minutes after the airflow is turned on. At this time, the return air temperature is 27.7 degrees Celsius (Table 2), which corresponds to the data in Table 1 for preventing direct airflow that is closer to 10 minutes.

[0142] As shown in Table 1, from the 10th to the 15th minute, since the return air temperature is greater than or equal to the set temperature, the air conditioner continues to operate in the default anti-direct-blowing state. From the 20th to the 35th minute, if the difference ΔT is greater than zero and less than the preset temperature threshold, the first air guide component is controlled to perform left and right sweeping, and the second air guide component is controlled to be between the first and second positions and opposite to the air outlet. From the 40th to the 60th minute, if the difference ΔT is greater than or equal to the preset temperature threshold, the first air guide component is controlled to perform left and right sweeping, and the second air guide component is controlled to move synchronously with the first air guide component.

[0143] The improved temperature profile is as follows: Figure 9 As shown in the diagram. Line a represents the original temperature curve at the first position, line b represents the improved temperature curve at the first position according to the embodiment of the present invention, line c represents the original temperature curve at the second position, and line d represents the improved temperature curve at the second position according to the embodiment of the present invention. Optionally, the first and second positions can be the left and right sides of the air outlet; further, the first and second positions can be positions 3 meters away from the air outlet.

[0144] To implement the above embodiments, the present invention proposes a computer-readable storage medium storing an anti-back-temperature control program for an air conditioner. When the anti-back-temperature control program is executed by a processor, it implements the anti-back-temperature control method for the air conditioner described in the above embodiments.

[0145] The computer-readable storage medium according to embodiments of the present invention can prevent the air conditioner from experiencing temperature rebound in anti-direct-blowing mode, thereby improving the uniformity of temperature throughout the room, enhancing the user experience, and eliminating the need for temperature compensation, thus reducing the probability of condensation.

[0146] To implement the above embodiments, the present invention also proposes an air conditioner, which includes a memory, a processor, and an air conditioner anti-back-temperature control program stored in the memory and executable on the processor. When the processor executes the air conditioner anti-back-temperature control program, it can implement the air conditioner anti-back-temperature control method of the above embodiments.

[0147] According to the embodiments of the present invention, the air conditioner can avoid the phenomenon of temperature rebound in the anti-direct-blowing mode, thereby making the temperature uniformity in all parts of the room better, improving the user experience, and eliminating the need for temperature compensation, thus reducing the probability of condensation.

[0148] like Figure 10 As shown, the air conditioner may include at least one processor 1201, at least one communication interface 1202, at least one memory 1203, and at least one communication bus 1204. In an embodiment of the present invention, the number of processor 1201, communication interface 1202, memory 1203, and communication bus 1204 is at least one, and the processor 1201, communication interface 1202, and memory 1203 communicate with each other through the communication bus 1204.

[0149] The memory 1203 may be, but is not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), etc. The memory 1203 stores the program, and after receiving the execution instruction, the processor 1201 executes the program to implement the steps of the anti-back-temperature control method for the air conditioner described in the above embodiment.

[0150] Processor 1201 may be an integrated circuit chip with signal processing capabilities. The aforementioned processor can be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it can also be a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this invention. The general-purpose processor can be a microprocessor or any conventional processor.

[0151] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0152] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0153] In the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0154] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0155] In the description of this application, "multiple" means two or more.

[0156] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0157] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0158] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0159] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A method for preventing backheating in an air conditioner, characterized in that, The air conditioner's casing defines an air outlet, and a first air guide is provided at the air outlet. The first air guide rotates about a vertical axis to change the air outlet direction. The air conditioner includes a second air guide, which is movably disposed outside the air outlet. The second air guide moves between a first position and a second position. In the first position, the second air guide cooperates with a first side of the air outlet to guide air towards a second side of the air outlet. In the second position, the second air guide cooperates with a second side of the air outlet to guide air towards a first side of the air outlet. Between the first and second positions, air outlet channels are defined between the second air guide and the first side of the air outlet, and between the second air guide and the second side of the air outlet. The anti-backflow control method includes: When determining that the air conditioner is operating in anti-direct-blowing mode, the relationship between the return air temperature and the set temperature is determined. When the return air temperature is lower than the set temperature, the first air guide is controlled to perform left and right sweeping, and the difference between the set temperature and the return air temperature is used to determine whether to control the second air guide to move synchronously with the first air guide.

2. The method according to claim 1, characterized in that, Determining whether to control the second air guide to move synchronously with the first air guide based on the difference between the set temperature and the return air temperature includes: When the difference is greater than or equal to a preset temperature threshold, the second air guide is controlled to move synchronously with the first air guide.

3. The method according to claim 2, characterized in that, When the difference is greater than zero and less than a preset temperature threshold, the second air guide is controlled to be between the first position and the second position and opposite to the air outlet.

4. The method according to any one of claims 1-3, characterized in that, Determining that the air conditioner operates in anti-direct-blowing mode includes: When the return air temperature is equal to the set temperature, the air conditioner is set to operate in anti-direct-blowing mode.

5. The method according to claim 4, characterized in that, When the air conditioner is operating in anti-direct-blow mode, the first air guide is controlled to guide air towards the front of the air outlet, the air conditioner's louvers are controlled to guide air upward, and the second air guide is controlled to be between the first position and the second position and opposite to the air outlet.

6. The method according to claim 5, characterized in that, When the return air temperature is greater than or equal to the set temperature, the first air guide is kept facing directly in front of the air outlet, the air conditioner's louvers are kept facing upwards, and the second air guide is kept between the first position and the second position and opposite to the air outlet.

7. The method according to claim 2, characterized in that, When the first air guide component sweeps left and right, and the second air guide component moves synchronously with the first air guide component. If the difference is greater than zero and less than a preset temperature threshold, then the second air guide is controlled to be between the first position and the second position and opposite to the air outlet; If the return air temperature is greater than or equal to the set temperature, the first air guide is controlled to guide air towards the front of the air outlet, and the second air guide is controlled to be between the first position and the second position and opposite to the air outlet.

8. The method according to claim 3 or 7, characterized in that, When the first air guide is performing left and right sweeping, and the second air guide is located between the first position and the second position and opposite to the air outlet. If the return air temperature is greater than or equal to the set temperature, then the first air guide is controlled to guide air towards the front of the air outlet.

9. A back-temperature control device for an air conditioner, characterized in that, The air conditioner's housing defines an air outlet, and a first air guide is provided at the air outlet. The first air guide rotates about a vertical axis to change the air outlet direction. The air conditioner includes a second air guide, which is movably disposed outside the air outlet. The second air guide moves between a first position and a second position. In the first position, the second air guide cooperates with a first side of the air outlet to guide air towards a second side of the air outlet. In the second position, the second air guide cooperates with a second side of the air outlet to guide air towards a first side of the air outlet. Between the first and second positions, air outlet channels are defined between the second air guide and the first side of the air outlet, and between the second air guide and the second side of the air outlet. The anti-backflow control device includes: The determination module is used to determine the relationship between the return air temperature and the set temperature when it is determined that the air conditioner is operating in anti-direct-blowing mode. The control module is used to control the first air guide to perform left and right sweeping when the return air temperature is lower than the set temperature, and to determine whether to control the second air guide to move synchronously with the first air guide based on the difference between the set temperature and the return air temperature.

10. An air conditioner, characterized in that, The device includes a memory, a processor, and an anti-back-temperature control program for an air conditioner stored in the memory and executable on the processor. When the processor executes the anti-back-temperature control program for the air conditioner, it implements the anti-back-temperature control method for the air conditioner according to any one of claims 1-8.

11. A computer-readable storage medium, characterized in that, It stores an anti-back-temperature control program for an air conditioner, which, when executed by a processor, implements the anti-back-temperature control method for an air conditioner according to any one of claims 1-8.

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