Air conditioner and control method thereof

Abstract

The present application relates to the technical field of air conditioners, in particular to an air conditioner and a control method thereof. The air conditioner comprises two air outlets arranged in a vertical direction. The control method comprises: obtaining a temperature difference between a first height and a second height in a room to obtain a first temperature difference; in response to the first temperature difference being greater than or equal to a preset difference value and the air outlet angles of the two air outlets not being the maximum upward angle, controlling the air outlet angles of the two air outlets to be adjusted upward by a preset angle and running for a first preset time; returning to the step of obtaining the first temperature difference until the air outlet angle is the maximum upward angle or the first temperature difference is less than the preset difference value, and maintaining the current air outlet angle. In the cooling operation process of the air conditioner, when the temperature difference between the upper and lower parts of the room is large, the air outlet angle is gradually increased to reduce the temperature difference between the upper and lower parts of the room. The control method is simple and easy to operate, and can improve the uniformity of the room temperature, thereby improving the user experience.

Description

Air conditioners and their control methods Technical Field

[0001] This invention relates to the field of air conditioner technology, and in particular to an air conditioner and its control method. Background Technology

[0002] When existing air conditioners are running in cooling mode, hot air, which is less dense, automatically rises, while cold air, which is more dense, automatically sinks. This results in the automatic stratification of hot and cold air. However, existing air conditioners use a fixed airflow pattern and cannot compensate for the actual conditions in the room, leading to poor room temperature uniformity, especially a large temperature difference between the top and bottom of the room, which affects the user experience. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide an air conditioner and its control method that overcome or at least partially solve the above problems, aiming to solve the problem of large temperature difference between the upper and lower parts of the room during the cooling operation of the air conditioner in the prior art, so as to improve the user experience.

[0004] To at least solve the above-mentioned technical problems, the present invention provides a control method for an air conditioner, the air conditioner including two air outlets arranged vertically;

[0005] When the air conditioner is in cooling operation, the control method includes:

[0006] Obtain the temperature difference between the indoor temperature at the first and second heights to obtain the first temperature difference;

[0007] In response to the first temperature difference being greater than or equal to a preset difference, and the air outlet angles of the two air outlets not being the maximum upward angle, the air outlet angles of the two air outlets are controlled to be adjusted upward by a preset angle, and the operation is carried out for a first preset time.

[0008] Return to the step of obtaining the first temperature difference until the air outlet angle is the maximum upward angle or the first temperature difference is less than the preset difference, and maintain the current air outlet angle.

[0009] Optionally, the control method further includes:

[0010] In response to the air outlet angle being the maximum upward angle and the first temperature difference being greater than or equal to a preset difference, the rotation speed of the indoor fan is obtained to obtain the first rotation speed;

[0011] In response to the first speed being less than the maximum speed, the indoor fan is controlled to execute a second speed, which is greater than the first speed.

[0012] Optionally, controlling the indoor fan to execute the second speed includes: controlling the speed of the indoor fan to increase by a preset increment value, and running for a second preset time;

[0013] The method of controlling the indoor fan speed to increase by a preset increment value and running for a second preset time, further includes:

[0014] Obtain the temperature difference between the indoor temperature at the first and second heights to obtain the second temperature difference;

[0015] In response to the second temperature difference being greater than or equal to the preset difference, the process returns to the step of increasing the speed of the indoor fan by a preset increment value until the speed of the indoor fan is at its maximum speed or the second temperature difference is less than the preset difference value, and then the current speed of the indoor fan is maintained.

[0016] Optionally, controlling the indoor fan to execute a second speed includes:

[0017] The second rotational speed is the maximum rotational speed.

[0018] Optionally, the control method further includes:

[0019] In response to the indoor fan's current speed being the maximum speed, the temperature difference between the indoor temperature at the first height and the temperature at the second height is obtained to obtain the third temperature difference;

[0020] In response to the third temperature difference being greater than or equal to a preset difference, the air outlet at the lower part is closed.

[0021] Optionally, the control method further includes:

[0022] In response to the third preset time of the air conditioner's cooling operation, the first temperature difference is acquired.

[0023] Optionally, the control method further includes:

[0024] In response to the air outlet angle being at its maximum upward angle, the current speed of the indoor fan being at its maximum speed, and the air outlet at the lower part being closed, after a third preset time, the temperature difference between the indoor temperature at the first height and the temperature at the second height is obtained, and the fourth temperature difference is obtained.

[0025] Determine whether the fourth temperature difference is less than the preset difference value;

[0026] If so, the lower air outlet is opened; and / or the indoor fan is controlled to operate at a third speed, which is less than the maximum speed.

[0027] Optionally, obtaining the temperature difference between the indoor space at the first height and the second height includes:

[0028] The temperature of multiple temperature measuring points at the first height of the room is obtained, and the first average temperature is calculated; and the temperature of multiple temperature measuring points at the second height of the room is obtained, and the second average temperature is calculated.

[0029] Calculate the temperature difference between the first average temperature and the second average temperature.

[0030] Optionally, each of the air outlets is provided with an air guide device;

[0031] Each of the aforementioned air guiding devices includes:

[0032] The vertical blade assembly extends vertically along the air outlet and is configured to rotate around a vertical axis of the air conditioner to adjust the lateral air outlet direction and air volume.

[0033] A horizontal sway blade assembly is located inside the corresponding air outlet. Each horizontal sway blade is configured to swing vertically up and down along the air conditioner to adjust the vertical air outlet direction.

[0034] On the other hand, the present invention provides an air conditioner including a control device, the control device including a memory and a processor, the memory storing a control program, the control program being executed by the processor to implement the control method of the air conditioner as described in any of the above claims.

[0035] In the air conditioner control method of this invention, during the cooling operation of the air conditioner, when there is a large temperature difference between the upper and lower parts of the room, a method of gradually increasing the upward air outlet angle is preferentially adopted to reduce the temperature difference between the upper and lower parts of the indoor environment. This control method is simple and easy to operate, and can improve the uniformity of the temperature throughout the room, thereby improving the user experience. Furthermore, compared with directly adjusting the air outlet angles of both outlets to the maximum upward angle, the method of gradually increasing the upward air outlet angle adopted in this invention can prevent excessive adjustment of the temperature difference between the upper and lower parts of the room, thus avoiding the situation where the upper part of the room is colder than the lower part.

[0036] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0037] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0038] Figure 1 is a flowchart of an air conditioner control method according to an embodiment of the present invention;

[0039] Figure 2 is a flowchart of an air conditioner control method according to an embodiment of the present invention;

[0040] Figure 3 is a flowchart of an air conditioner control method according to an embodiment of the present invention;

[0041] Figure 4 is a flowchart of an air conditioner control method according to an embodiment of the present invention;

[0042] Figure 5 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;

[0043] Figure 6 is a schematic structural diagram of a yaw blade assembly according to an embodiment of the present invention;

[0044] Figure 7 is a diagram showing the usage status of an air conditioner according to an embodiment of the present invention. Detailed Implementation

[0045] The control method and air conditioner of the present invention according to embodiments are described below with reference to Figures 1 to 7. In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0046] Unless otherwise expressly specified and limited, the terms "control method," "installation," "connection," "linking," "fixing," and "coupling," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0047] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present 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.

[0048] Figure 1 is a schematic flowchart of an air conditioner control method according to an embodiment of the present invention. In conjunction with Figures 2-7, the present invention provides an air conditioner control method. The air conditioner includes two air outlets arranged vertically.

[0049] As shown in Figure 1, when the air conditioner is in cooling operation, the control method includes the following steps:

[0050] Step S11: Obtain the temperature difference between the indoor temperature at the first height and the temperature at the second height to obtain the first temperature difference.

[0051] Step S12: In response to the first temperature difference being greater than or equal to a preset difference, and the air outlet angles of the two air outlets not being the maximum upward angle, the air outlet angles of the two air outlets are controlled to be adjusted upward by a preset angle, and the process is run for a first preset time.

[0052] Step S13: Return to the step of obtaining the first temperature difference until the air outlet angle is the maximum upward angle or the first temperature difference is less than the preset difference, and maintain the current air outlet angle.

[0053] Specifically, the first temperature difference represents the temperature difference between the upper and lower parts of the room. The larger the first temperature difference, the greater the temperature difference between the upper and lower parts of the room, and the more uneven the indoor environment. The maximum upward angle refers to the maximum air outlet angle when the air is blowing upwards.

[0054] In this embodiment, in order to prevent the temperature difference between the upper and lower parts of the room from being too large, when the first temperature difference is greater than or equal to a preset difference value, it is determined whether the air outlet angles of the two air outlets of the air conditioner are at their maximum upward angle. If the air outlet angles of the two air outlets are not at their maximum upward angle, the air outlet angles of the two air outlets are controlled to be adjusted upward by a preset angle (denoted as △α), and the operation is carried out for a first preset time.

[0055] Then, the first temperature difference is obtained again: if the first temperature difference is less than the preset difference, it means that the two air outlets have effectively solved the problem of large temperature difference between the upper and lower parts by adjusting the preset angle △α upwards. At this time, the current air outlet angle is maintained. If the first temperature difference is still greater than or equal to the preset difference, it means that the two air outlets have not solved the problem of large temperature difference between the upper and lower parts by adjusting the preset angle △α upwards. At this time, the two air outlets are controlled to continue to adjust the preset angle △α upwards and run for a first preset time. Then, the first temperature difference is obtained again, and the relationship between the first temperature difference and the preset temperature difference is determined. Based on the determination result, the air outlet angles of the two air outlets are controlled until the air outlet angles of the two air outlets are at their maximum upward angles. At this time, the current air outlet angles of the two air outlets are maintained. Alternatively, the current air outlet angles of the two air outlets are maintained until the first temperature difference is less than the preset difference.

[0056] In summary, during the cooling operation of the air conditioner, when there is a large temperature difference between the upper and lower parts of the room, the method of gradually increasing the upward air outlet angle is prioritized to reduce the temperature difference. This control method is simple and easy to operate, and it can improve the uniformity of the temperature throughout the room, thereby enhancing the user experience. During the air outlet angle adjustment process, when the first temperature difference is less than the preset difference value, it indicates that the temperature difference between the upper and lower parts of the room is small, and the current air outlet angle can be maintained; or, when the air outlet angles of both air outlets are adjusted to the maximum upward angle, the current air outlet angle is also maintained. Furthermore, compared with the method of directly adjusting the air outlet angles of both air outlets to the maximum upward angle, the method of gradually increasing the upward air outlet angle adopted by this invention can prevent excessive adjustment of the temperature difference between the upper and lower parts of the room, that is, it can avoid the situation where the temperature in the lower part of the room is higher than that in the upper part of the room.

[0057] In some optional embodiments of the present invention, the control method further includes: in response to the start of the air conditioner, obtaining the operating mode of the air conditioner; and in response to the operating mode of the air conditioner being a cooling mode, controlling the air conditioner to operate in cooling mode.

[0058] In some optional embodiments of the present invention, the preset difference is 3 to 7°C (e.g., 3°C, 4°C, 4.5°C, 4.8°C, 5°C, 5.5°C, 5.8°C, 6°C, 6.5°C, or 7°C). Preferably, the preset difference is 5°C.

[0059] In some optional embodiments of the present invention, obtaining the temperature difference between an indoor space at a first height and an indoor space at a second height includes the following steps: obtaining the temperature at the first height to obtain a first temperature; simultaneously obtaining the temperature at the second height to obtain a second temperature; and calculating the difference between the first temperature and the second temperature.

[0060] Specifically, the first height is greater than the second height. The first temperature represents the upper temperature of the indoor environment; the second temperature represents the lower temperature of the indoor environment.

[0061] As shown in Figure 2, in some optional embodiments of the present invention, the control method further includes the following steps:

[0062] Step S21: In response to the air outlet angle being the maximum upward angle and the first temperature difference being greater than or equal to a preset difference, the rotation speed of the indoor fan is obtained to obtain the first rotation speed.

[0063] Step S22: In response to the first speed being less than the maximum speed, the indoor fan is controlled to execute a second speed, which is greater than the first speed.

[0064] Specifically, during the cooling operation of the air conditioner, if the following two conditions are met simultaneously: ① the first temperature difference is greater than or equal to the preset difference; ② the air outlet angles of both air outlets are at their maximum upward angles; then, the rotation speed of the indoor fan is obtained to get the first rotation speed; then it is determined whether the first rotation speed is less than the maximum rotation speed. If the first rotation speed is less than the maximum rotation speed, the rotation speed of the indoor fan is increased, that is, the indoor fan is controlled to execute the second rotation speed.

[0065] This embodiment is divided into the following two cases:

[0066] The first scenario: During the air conditioner's cooling operation, it is first determined whether the first temperature difference is greater than or equal to a preset difference. If the first temperature difference is greater than or equal to the preset difference, it is determined whether the air outlet angles of the two air outlets are at their maximum upward angles. If both air outlet angles are at their maximum upward angles, the indoor fan speed is obtained to determine the first speed, and step S21 is executed. In other words, after the first step of obtaining the first temperature difference, if the first temperature difference is greater than or equal to the preset difference, and both air outlet angles are at their maximum upward angles, the current air outlet angles are maintained, the first speed of the indoor fan is obtained, and the indoor fan is controlled according to the first speed.

[0067] The second scenario: During the air conditioner's cooling operation, firstly, it is determined whether the first temperature difference is greater than or equal to a preset difference. If the first temperature difference is greater than or equal to the preset difference, it is determined whether the air outlet angles of the two air outlets are at their maximum upward angle. If neither of the two air outlet angles is at its maximum upward angle, the upward air outlet angles of the two air outlets are adjusted, i.e., steps S12 and S13 are executed. When both air outlet angles are adjusted to their maximum upward angles, if the first temperature difference is still greater than or equal to the preset difference, the indoor fan speed is obtained to determine the first speed, i.e., step S21 is executed. In other words, when adjusting the air outlet angle alone cannot effectively reduce the temperature difference between the upper and lower parts of the room, the airflow speed to the upper part of the room is increased by adjusting the indoor fan speed, thereby reducing the temperature difference between the upper and lower parts of the room.

[0068] In this embodiment, adjusting the air outlet angle has a higher priority than adjusting the indoor fan speed. Specifically, while maintaining the maximum upward air outlet angle of both air outlets, increasing the indoor fan speed simultaneously increases the air outlet velocity, which can improve the convection of hot and cold air in the room, help improve the uniformity of room temperature, and thus further reduce the temperature difference between the upper and lower parts of the indoor environment, thereby further improving the user experience.

[0069] In another optional embodiment of the present invention, the control method further includes: in response to the air outlet angle being the maximum upward angle and the first temperature difference being greater than or equal to a preset difference, obtaining the rotational speed of the indoor fan to obtain a first rotational speed; in response to the first rotational speed being equal to the maximum rotational speed, controlling the indoor fan to execute the first rotational speed.

[0070] As shown in Figure 3, in some optional embodiments of the present invention, controlling the indoor fan to execute a second speed includes the following steps: Step S31, controlling the speed of the indoor fan to increase by a preset increment value, and running for a second preset time.

[0071] The control method further includes the following steps: after the indoor fan speed is increased by a preset increment value and the fan is run for a second preset time, the control method further includes the following steps:

[0072] Step S32: Obtain the temperature difference between the indoor temperature at the first height and the temperature at the second height to obtain the second temperature difference.

[0073] Step S33: In response to the second temperature difference being greater than or equal to the preset difference value, return to the step of controlling the indoor fan speed to increase by a preset increment value until the indoor fan speed is the maximum speed or the second temperature difference is less than the preset difference value, and maintain the current speed of the indoor fan.

[0074] In some alternative embodiments of the present invention, controlling the indoor fan to execute a second speed includes the following steps: controlling the speed of the indoor fan to increase by a preset increment value, and running for a second preset time.

[0075] The control method further includes the following steps: after the indoor fan speed is increased by a preset increment value and the fan is run for a second preset time, the control method further includes the following steps:

[0076] The temperature difference between the first and second indoor altitudes is obtained to determine the second temperature difference.

[0077] In response to the second temperature difference being less than the preset difference value, the current speed of the indoor fan is maintained.

[0078] In the above two embodiments, to prevent excessive temperature differences between the upper and lower parts of the room, when the air outlet angles of the two air outlets are at their maximum upward angles and the first temperature difference is greater than or equal to a preset difference, the rotational speed of the indoor fan is obtained to obtain a first rotational speed. If the first rotational speed is less than the maximum rotational speed, the rotational speed of the indoor fan is increased by a preset increment, and the fan runs for a second preset time. Then, the temperature difference between the room at the first height and the room at the second height is obtained to obtain a second temperature difference. Next, it is determined whether the second temperature difference is less than a preset difference. Based on the determination result, the rotational speed of the indoor fan is controlled, which falls into the following two categories:

[0079] First scenario: If the second temperature difference is less than the preset difference value, it means that increasing the indoor fan speed by the preset increase value has effectively solved the problem of large temperature difference between the upper and lower parts. In this case, the current speed of the indoor fan is maintained.

[0080] In the second scenario: if the second temperature difference is greater than or equal to the preset difference, and the above-mentioned increase in the indoor fan speed by the preset increase value does not solve the problem of large temperature difference between the upper and lower parts of the indoor environment, then the step of controlling the indoor fan speed to increase by the preset increase value and running for the second preset time is executed again until the second temperature difference is less than the preset difference or the indoor fan speed increases to the maximum speed, and the current speed of the indoor fan is maintained.

[0081] In this embodiment, the method of gradually increasing the indoor fan speed used in this invention, compared with the method of directly adjusting the indoor fan speed to the maximum speed, can not only prevent excessive adjustment of the temperature difference between the upper and lower parts of the room, that is, avoid the situation where the temperature in the lower part of the room is higher than that in the upper part, but also save energy and has the technical effect of energy saving and emission reduction.

[0082] In some alternative embodiments of the present invention, controlling the indoor fan to execute a second speed includes: the second speed being the maximum speed.

[0083] In this embodiment, directly increasing the speed of the indoor fan to the maximum speed can quickly reduce the temperature in the upper part of the indoor environment, thereby quickly reducing the temperature difference between the upper and lower parts of the indoor environment.

[0084] As shown in Figure 4, in some optional embodiments of the present invention, the control method further includes: in response to the current rotation speed of the indoor fan being the maximum rotation speed, obtaining the temperature difference between the indoor area at a first height and the indoor area at a second height to obtain the third temperature difference; in response to the third temperature difference being greater than or equal to a preset difference, closing the air outlet at the lower part.

[0085] Specifically, during the cooling operation of the air conditioner, if the following two conditions are met simultaneously: ① the current speed of the indoor fan is the maximum speed; ② the temperature difference between the first height and the second height of the room is greater than or equal to a preset difference; then, the lower air outlet is closed, and only the upper air outlet is opened.

[0086] In this embodiment, adjusting the indoor fan speed has a higher priority than closing the lower air outlet. That is, adjusting the air outlet angle has the first priority, adjusting the indoor fan speed has the second priority, and closing the lower air outlet has the third priority.

[0087] Specifically, if the temperature difference between the upper and lower parts of the indoor environment cannot be effectively reduced while maintaining the maximum upward angle and maximum air velocity of the two air outlets, closing the lower air outlet can further prevent cold air from blowing into the lower part of the indoor environment and only blow cold air into the upper part of the indoor environment, thereby effectively reducing the temperature difference between the upper and lower parts of the indoor environment.

[0088] In some alternative embodiments of the present invention, the control method further includes: closing the air outlet located at the lower part in response to the current rotation speed of the indoor fan being the maximum rotation speed and the second temperature difference being greater than or equal to a preset difference.

[0089] Specifically, during the cooling operation of the air conditioner, if the following two conditions are met simultaneously: ① the second temperature difference is greater than or equal to the preset difference; ② the current speed of the indoor fan is the maximum speed; then, the lower air outlet is closed, and only the upper air outlet is opened.

[0090] In this embodiment, adjusting the indoor fan speed has a higher priority than closing the lower air outlet. That is, adjusting the air outlet angle has the first priority, adjusting the indoor fan speed has the second priority, and closing the lower air outlet has the third priority.

[0091] Specifically, if the temperature difference between the upper and lower parts of the indoor environment cannot be effectively reduced while maintaining the maximum upward airflow angle and maximum airflow speed of the two air outlets, closing the lower air outlet can further prevent cold air from blowing into the lower part of the indoor environment and only blow cold air into the upper part of the indoor environment, thereby effectively reducing the temperature difference between the upper and lower parts of the indoor environment.

[0092] In some optional embodiments of the present invention, the control method further includes the following step: in response to a third preset time of cooling operation of the air conditioner, starting to acquire the first temperature difference.

[0093] Specifically, since the indoor temperature is relatively uniform when the air conditioner first starts running, it is not necessary to obtain the first temperature difference at this time. Therefore, the first temperature difference is only obtained after the air conditioner has been running for the third preset time.

[0094] In another alternative embodiment of the invention, the control method further includes the step of: in response to the start of the air conditioner, starting to acquire the first temperature difference.

[0095] In some optional embodiments of the present invention, the control method further includes the following steps:

[0096] Step S41: In response to the air outlet angle being the maximum upward angle, the current speed of the indoor fan being the maximum speed, and the air outlet at the lower part being closed, after a third preset time, the temperature difference between the indoor area at the first height and the indoor area at the second height is obtained, and the fourth temperature difference is obtained.

[0097] Step S42: Determine whether the fourth temperature difference is less than the preset difference value.

[0098] Step S43: If so, open the air outlet at the bottom and control it to emit cold air.

[0099] In some alternative embodiments of the present invention, the control method further includes the following steps:

[0100] Step S51: In response to the air outlet angle being the maximum upward angle, the current speed of the indoor fan being the maximum speed, and the air outlet at the lower part being closed, after a third preset time, the temperature difference between the indoor area at the first height and the indoor area at the second height is obtained, and the fourth temperature difference is obtained.

[0101] Step S52: Determine whether the fourth temperature difference is less than the preset difference value.

[0102] Step S53: If yes, open the air outlet at the bottom and control it to blow cold air; and control the indoor fan to run at a third speed, which is less than the maximum speed.

[0103] In some alternative embodiments of the present invention, the control method further includes the following steps:

[0104] Step S61: In response to the air outlet angle being the maximum upward angle, the current speed of the indoor fan being the maximum speed, and the air outlet at the lower part being closed, after a third preset time, the temperature difference between the indoor area at the first height and the indoor area at the second height is obtained, and the fourth temperature difference is obtained.

[0105] Step S62: Determine whether the fourth temperature difference is less than the preset difference value.

[0106] Step S63: If yes, control the indoor fan to run at a third speed, the third speed being less than the maximum speed.

[0107] Furthermore, in some optional embodiments of the present invention, the control method further includes the following steps: after determining whether the fourth temperature difference is less than the preset difference, if the fourth temperature difference is less than the preset difference, the air outlet angle is maintained at the maximum upward angle, the current speed of the indoor fan is the maximum speed, and the air outlet at the top is closed; then after a third preset time, the fourth temperature difference is obtained again, and it is determined again whether the fourth temperature difference is less than the preset difference.

[0108] In some optional embodiments of the present invention, obtaining the temperature difference between an indoor space at a first height and a second height includes the following steps:

[0109] Step S71: Obtain the temperature of multiple temperature measuring points at the first height in the room and calculate the first average temperature; and obtain the temperature of multiple temperature measuring points at the second height in the room and calculate the second average temperature.

[0110] Step S72: Calculate the temperature difference between the first average temperature and the second average temperature.

[0111] For example, the second height is 0.2m from the indoor ground, and the first height is 2m from the indoor ground. That is to say, the difference between the first height and the second height is 1.8m.

[0112] In this embodiment, a first average temperature (i.e., the first temperature) is obtained based on the temperatures of multiple temperature measuring points at a first altitude. This first average temperature reflects the overall temperature state of the indoor environment at the first altitude. Similarly, a second average temperature (i.e., the second temperature) is obtained based on the temperatures of multiple temperature measuring points at a second altitude. This second average temperature reflects the overall temperature state of the indoor environment at the second altitude. Therefore, this embodiment can obtain the true temperature difference between the first and second altitudes in the indoor environment. In other words, it reflects the true temperature difference between the upper and lower altitudes of the indoor environment. Based on this true temperature difference, misjudgments can be avoided, making it more conducive to precise control of the air conditioner.

[0113] In some optional embodiments of the present invention, there are three temperature measuring points both indoors at the first height and indoors at the second height.

[0114] As shown in Figure 7, the three temperature measuring points at the first altitude indoors are A1, B1, and C1. The three temperature measuring points at the second altitude indoors are A2, B2, and C2.

[0115] Specifically, there are a total of 6 temperature measurement points indoors, namely:

[0116] Temperature measurement point A1 is located on the left side of the air conditioner and at the first height.

[0117] Temperature measuring point B1 is located on the front side of the air conditioner and at the first height.

[0118] Temperature measuring point C1 is located to the right of the air conditioner and at the first height.

[0119] Temperature measurement point A2 is located on the left side of the air conditioner and at the second height.

[0120] Temperature measurement point B2 is located on the front side of the air conditioner and at the second height.

[0121] Temperature measurement point C2 is located to the right of the air conditioner and at the second height.

[0122] For example, the second height is 0.2m from the indoor ground, and the first height is 2m from the indoor ground. That is to say, the difference between the first height and the second height is 1.8m.

[0123] In some alternative embodiments of the present invention, obtaining the temperature difference between an indoor space at a first height and a second height includes the following steps:

[0124] Obtain the temperature at a temperature measuring point at a first altitude in the room to obtain the first temperature; and obtain the temperature at a temperature measuring point at a second altitude in the room to obtain the second temperature; calculate the temperature difference between the first temperature and the second temperature.

[0125] In some alternative embodiments of the present invention, obtaining the temperature difference between the indoor temperature at a first height and the indoor temperature at a second height includes the following steps: obtaining the temperature of four temperature measuring points at the first height to obtain a first average temperature; obtaining the temperature of four temperature measuring points at the second height to obtain a second average temperature; and calculating the temperature difference between the first average temperature and the second average temperature.

[0126] In some optional embodiments of the present invention, the temperature difference between the indoor temperature at the first altitude and the temperature at the second altitude is acquired every 3 minutes.

[0127] In some optional embodiments of the present invention, an infrared temperature sensor 30 is provided on the front side of the air conditioner to obtain the temperature of multiple temperature measuring points in the room.

[0128] Preferably, the infrared temperature sensor 30 is installed on the upper part of the air conditioner housing and is located above the air outlet.

[0129] In existing technologies, air conditioning parameter acquisition is generally achieved through automatic control using ambient temperature sensors at the air inlet and sensors on the inner coils of the indoor heat exchanger. However, the ambient temperature sensors, which collect the air temperature parameters entering the air conditioner, are limited by the airflow area and can only reflect the air temperature near the air conditioner. They cannot accurately reflect the overall air temperature distribution throughout the room. Even with temperature compensation in the control scheme, it remains a fixed mode, and its accuracy is difficult to achieve due to factors such as room shape and area.

[0130] In this embodiment, by setting an infrared temperature sensor 30 on the front of the air outlet, the temperature of different temperature measurement points throughout the house is scanned, and directional air is delivered, which can ensure the uniformity of the temperature throughout the house and improve the user's air conditioning experience.

[0131] As shown in Figures 5-6, in some optional embodiments of the present invention, each air outlet is provided with an air guiding device. Each air guiding device includes a vertical oscillating blade assembly 10 and a horizontal oscillating blade assembly 20.

[0132] As shown in Figure 5, the vertical oscillating blade assembly 10 extends vertically along the air outlet. The vertical oscillating blade assembly 10 is configured to rotate around a vertical axis of the air conditioner to adjust the lateral air outlet direction and air volume.

[0133] As shown in Figure 6, the horizontal louver group 20 is disposed inside the corresponding air outlet. The multiple horizontal louvers of the horizontal louver group are arranged vertically, and each horizontal louver is configured to swing up and down along the vertical direction of the air conditioner to adjust the vertical air outlet direction.

[0134] The vertical sway blade assembly 10 and the horizontal sway blade assembly 20 work together to guide the airflow, allowing the airflow to blow in any direction and achieve point-to-point air delivery.

[0135] In this embodiment, the air guiding device corresponding to each air outlet is a separate structure, and each air guiding device can be controlled independently. The horizontal oscillating blade group 20 corresponding to each air outlet is used to control the up and down airflow direction of the air outlet, and the vertical oscillating blade group 10 corresponding to each air outlet can be used to control the left and right airflow direction of the air outlet.

[0136] Figure 5 is a schematic diagram of the structure of an air conditioner according to an embodiment of the present invention. Referring to Figure 6, the present invention also provides an air conditioner including a control device. The control device includes a memory and a processor. The memory stores a control program, which, when executed by the processor, is used to implement the control method of the air conditioner as described in any of the above embodiments.

[0137] In this embodiment, during the cooling operation of the air conditioner, when there is a large temperature difference between the upper and lower parts of the room, the method of gradually increasing the upward air outlet angle is preferentially adopted to reduce the temperature difference between the upper and lower parts of the indoor environment. This control method is simple and easy to operate, and can improve the uniformity of the temperature throughout the room, thereby improving the user experience. During the adjustment of the air outlet angle, when the first temperature difference is less than the preset difference value, it indicates that the temperature difference between the upper and lower parts of the room is small, and the current air outlet angle can be maintained; or, when the air outlet angles of both air outlets are adjusted to the maximum upward angle, the current air outlet angle is also maintained. In addition, compared with the method of directly adjusting the air outlet angles of both air outlets to the maximum upward angle, the method of gradually increasing the upward air outlet angle adopted by this invention can prevent excessive adjustment of the temperature difference between the upper and lower parts of the room, that is, it can avoid the occurrence of the lower part of the room being warmer than the upper part.

[0138] Furthermore, the air conditioner is a cabinet-type air conditioner, that is, a floor-standing cabinet unit.

[0139] In some alternative embodiments of the present invention, the air conditioner includes a housing. Two vertically arranged air outlets are provided on the front side of the housing. The two air outlets are an upper air outlet and a lower air outlet; the upper air outlet is located above the lower air outlet.

[0140] In some alternative embodiments of the present invention, each of the air outlets is provided with an air guiding device.

[0141] Each of the aforementioned air guide devices includes a vertical oscillating blade assembly 10 and a horizontal oscillating blade assembly 20.

[0142] As shown in Figure 5, the vertical oscillating blade assembly 10 extends vertically along the air outlet. The vertical oscillating blade assembly 10 is configured to rotate around a vertical axis of the air conditioner to adjust the lateral air outlet direction and air volume.

[0143] As shown in Figure 6, the horizontal louver group 20 is disposed inside the corresponding air outlet. The multiple horizontal louvers of the horizontal louver group are arranged vertically, and each horizontal louver is configured to swing up and down along the vertical direction of the air conditioner to adjust the vertical air outlet direction.

[0144] The vertical sway blade assembly 10 and the horizontal sway blade assembly 20 work together to guide the airflow, allowing the airflow to blow in any direction and achieve point-to-point air delivery.

[0145] In this embodiment, the air guiding device corresponding to each air outlet is a separate structure, and each air guiding device can be controlled independently. The horizontal oscillating blade group 20 corresponding to each air outlet is used to control the up and down airflow direction of the air outlet, and the vertical oscillating blade group 10 corresponding to each air outlet can be used to control the left and right airflow direction of the air outlet.

[0146] In some optional embodiments of the present invention, an infrared temperature sensor 30 is provided on the front side of the air conditioner to obtain the temperature of multiple temperature measuring points in the room.

[0147] Preferably, the infrared temperature sensor 30 is installed on the upper part of the air conditioner housing and is located above the air outlet.

[0148] In some alternative embodiments of the invention, the infrared temperature sensor 30 is mounted on the lower part of the front side of the air conditioner housing.

[0149] In some alternative embodiments of the invention, the infrared temperature sensor 30 is mounted at the center of the front side of the air conditioner housing.

[0150] In existing technologies, air conditioning parameter acquisition is generally achieved through automatic control using ambient temperature sensors at the air inlet and sensors on the inner coils of the indoor heat exchanger. The ambient temperature sensors, which collect the air temperature parameters entering the air conditioner, are limited by the airflow area and can only reflect the air temperature near the air conditioner, making it difficult to assess the overall room temperature distribution. Even with temperature compensation in the control scheme, it remains a fixed mode, and its accuracy is limited by factors such as room shape and area. In this embodiment, however, by placing an infrared temperature sensor 30 on the front of the air outlet, which scans the temperature at different measurement points throughout the room and directs airflow in a directional manner, uniform temperature throughout the room can be ensured, improving the user's air conditioning experience.

[0151] When the remote control is set to the whole-house uniform temperature mode: the vertical oscillating blade assembly 10 and the horizontal oscillating blade assembly 20 can be directed to enhance airflow to areas with insufficient temperature, ensuring the uniformity of temperature throughout the house.

[0152] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. A control method for an air conditioner, characterized in that, The air conditioner includes two vertically arranged air outlets; each air outlet is equipped with an air guide device; when the air conditioner is in cooling operation, the control method includes: acquiring the temperature difference between the indoor unit at a first height and the indoor unit at a second height to obtain a first temperature difference; responding to the first temperature difference being greater than or equal to a preset difference, and the air outlet angles of the two air outlets not being at their maximum upward angle, controlling the air outlet angles of both air outlets to be adjusted upward by a preset angle, and running for a first preset time; returning to the step of acquiring the first temperature difference until the air outlet angle is at its maximum upward angle or the first temperature difference is less than the preset difference, maintaining the current air outlet angle; responding to the air outlet angle being at its maximum upward angle and the first temperature difference being greater than or equal to the preset difference, acquiring the rotational speed of the indoor fan to obtain a first rotational speed; responding to the first rotational speed being less than the maximum rotational speed, controlling the indoor fan to execute a second rotational speed, the second rotational speed being greater than the first rotational speed; responding to the indoor fan... The current rotation speed is the maximum rotation speed. The temperature difference between the indoor unit at the first height and the indoor unit at the second height is obtained to obtain a third temperature difference. In response to the third temperature difference being greater than or equal to a preset difference, the lower air outlet is closed. The step of controlling the indoor fan to execute a second rotation speed includes: controlling the rotation speed of the indoor fan to increase by a preset increment value and running for a second preset time. After controlling the rotation speed of the indoor fan to increase by the preset increment value and running for the second preset time, the method further includes: obtaining the temperature difference between the indoor unit at the first height and the indoor unit at the second height to obtain a second temperature difference; in response to the second temperature difference being less than the preset difference, maintaining the current rotation speed of the indoor fan; or in response to the second temperature difference being greater than or equal to the preset difference, returning to the step of controlling the rotation speed of the indoor fan to increase by the preset increment value, until the rotation speed of the indoor fan is the maximum rotation speed or the second temperature difference is less than the preset difference, maintaining the current rotation speed of the indoor fan.

2. The control method according to claim 1, wherein controlling the indoor fan to execute a second speed comprises: The second rotational speed is the maximum rotational speed.

3. The control method according to claim 1, characterized in that: The control method further includes: in response to a third preset time of cooling operation of the air conditioner, starting to acquire the first temperature difference.

4. The control method according to claim 1, characterized in that: The control method further includes: in response to the air outlet angle being the maximum upward angle, the current speed of the indoor fan being the maximum speed, and the lower air outlet being closed, after a third preset time, obtaining the temperature difference between the indoor area at the first height and the indoor area at the second height to obtain a fourth temperature difference; determining whether the fourth temperature difference is less than the preset difference; if so, opening the lower air outlet; and / or controlling the indoor fan to execute a third speed, the third speed being less than the maximum speed.

5. The control method according to claim 1, characterized in that: The method of obtaining the temperature difference between the indoor temperature at a first height and the indoor temperature at a second height includes: obtaining the temperature of multiple temperature measuring points at the first height and calculating a first average temperature; obtaining the temperature of multiple temperature measuring points at the second height and calculating a second average temperature; and calculating the temperature difference between the first average temperature and the second average temperature.

6. The control method according to claim 1, characterized in that: Each of the aforementioned air guiding devices includes: a vertical oscillating blade assembly, extending vertically along the air outlet and configured to rotate around a vertical axis of the air conditioner, used to adjust the lateral air outlet direction and air volume; and a horizontal oscillating blade assembly, disposed inside the corresponding air outlet, each horizontal oscillating blade configured to swing up and down vertically along the air conditioner to adjust the vertical air outlet direction.

7. An air conditioner, characterized in that, The device includes a control unit, which comprises a memory and a processor. The memory stores a control program, which, when executed by the processor, is used to implement the control method of the air conditioner as described in any one of claims 1 to 6.

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