Control method of air conditioner

Abstract

The application provides a control method of an air conditioner, comprising: judging whether a first dust filter screen needs to be cleaned; when the first dust filter screen needs to be cleaned, moving a second air outlet column from an initial position to a preset position, and rotating the second air outlet column around a vertical axis to align the second air outlet with the first air outlet, and to make the first air outlet in a state of no air flow outwardly conveying, and the second air outlet in a state of air flow outwardly conveying, and then making the air flow out of the second air outlet flow to the first air inlet through the first air outlet. Non-heat exchange air flow can enter the first air outlet to clean the dust filter screen arranged at the first air inlet. Special equipment for cleaning and the like is no longer needed, cost is low, and the degree of intelligence is high. Meanwhile, the air resistance at the air inlet becomes small, the load of the fan is reduced, and the air conditioner has an energy-saving effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioning technology, in particular to a control method of an air conditioner. BACKGROUND

[0002] The existing vertical air conditioner indoor unit usually sets a vertical strip-shaped air outlet on the front side of the shell, and realizes up-down and left-right swing through the air guide device. With the development of the times and the progress of technology, users not only expect air conditioners to have faster cooling and heating speeds, but also pay more and more attention to the comfort performance of air conditioners. Therefore, some existing technologies have made many improvements to the air outlet structure, such as blowing soft wind, new wind, humidifying air flow, etc. The dust filter screen is usually arranged at the air inlet of the vertical air conditioner indoor unit, and the existing dust filter screen is relatively troublesome to clean, and a special cleaning structure needs to be arranged. SUMMARY

[0003] The purpose of the present application is to overcome the above problems or at least partially solve the above problems, and to provide a control method of an air conditioner, which can automatically clean the dust filter screen of the air conditioner indoor unit.

[0004] Specifically, the present application provides a control method of an air conditioner, the air conditioner comprising an air conditioner indoor unit, wherein the air conditioner indoor unit comprises a first air outlet column and a second air outlet column; the first air outlet column and the second air outlet column are arranged in a transverse direction; a first air outlet is arranged on the front side of the first air outlet column, a first air inlet is arranged on the rear side of the first air outlet column and communicates with the first air outlet, and a first dust filter screen is arranged at the first air inlet; a second air outlet is arranged on the front side of the second air outlet column; the control method of the air conditioner comprises:

[0005] determining whether the first dust filter screen needs to be cleaned;

[0006] when the first dust filter screen needs to be cleaned, moving the second air outlet column from an initial position to a preset position, and rotating the second air outlet column around a vertical axis to align the second air outlet with the first air outlet, and at the same time, making the first air outlet in a state of no air flow outwardly transported, and making the second air outlet in a state of air flow outwardly transported, and then making the air flow out of the second air outlet flow to the first air inlet through the first air outlet.

[0007] Optionally, the control method of the air conditioner further comprises:

[0008] detecting the amount of impurities on the first dust filter screen;

[0009] when the amount of impurities is greater than a first impurity preset value, determining that the first dust filter screen needs to be cleaned.

[0010] Optionally, the control method of the air conditioner further comprises:

[0011] detecting a working time length of the first dust filter screen;

[0012] when the working time length is greater than a first time length preset value, determining that the first dust filter screen needs to be cleaned.

[0013] Optionally, the control method of the air conditioner further comprises:

[0014] when the cleaning of the first dust filter screen is stopped, the second air outlet column returns to the initial position;

[0015] wherein, detecting the amount of impurities on the first dust filter screen; when the amount of impurities is less than a second impurity preset value, stopping cleaning the first dust filter screen; or, detecting a time length of air supply of the second air outlet when the second air outlet is aligned with the first air outlet; when the time length is greater than a second time length preset value, stopping cleaning the first dust filter screen.

[0016] Optionally, the control method of the air conditioner further comprises:

[0017] the rear side of the second air outlet column is provided with a second air inlet communicated with the second air outlet, and the second air inlet is provided with a second dust filter screen; the control method of the air conditioner further comprises:

[0018] judging whether the second dust filter screen needs to be cleaned;

[0019] when the second dust filter screen needs to be cleaned, moving the second air outlet column from the initial position to a preset position, and rotating the second air outlet column around a vertical axis to align the second air outlet with the first air outlet, and at the same time, making the second air outlet in a state of no air flow outwardly transported, and making the first air outlet in a state of air flow outwardly transported, so that the air flow flowing out of the first air outlet flows to the second air inlet through the second air outlet.

[0020] Optionally, the control method of the air conditioner further comprises:

[0021] when the first dust filter screen needs to be cleaned and the second dust filter screen needs to be cleaned, first making the second air outlet outwardly transport air flow until the cleaning of the first dust filter screen is completed, and then making the first air outlet outwardly transport air flow; or,

[0022] when the first dust filter screen needs to be cleaned and the second dust filter screen needs to be cleaned, alternately making the second air outlet outwardly transport air flow and making the first air outlet outwardly transport air flow.

[0023] Optionally, the control method of the air conditioner further comprises:

[0024] judging whether the second air outlet column is in the initial position;

[0025] detecting a flow rate of the airflow flowing out of the second air outlet when the second air outlet column is in the initial position;

[0026] causing the second air outlet column to rotate when the flow rate of the airflow flowing out of the second air outlet reaches a preset value; the vertical axis passes through the second air outlet column, and the vertical axis is spaced apart from the second air outlet.

[0027] Optionally, the air conditioner indoor unit further comprises a track and a sliding block arranged on the track, and the second air outlet column shell is rotatably mounted on the sliding block.

[0028] The first air outlet is in the shape of a vertical bar, and the second air outlet is in the shape of a vertical bar.

[0029] When the second air outlet column is in the initial position, the first air outlet column and the second air outlet column are arranged in a transverse direction, the first air outlet faces forward and faces the second air outlet column, the second air outlet faces forward and faces the first air outlet column, a rear edge of the second air outlet is located in front of a rear edge of the first air outlet, and a front edge of the second air outlet is located behind a front edge of the first air outlet.

[0030] Optionally, a ratio of a transverse width of the second air outlet column to a transverse width of the first air outlet column is less than 1 / 2, a ratio of a longitudinal depth of the second air outlet column in a front-rear direction to a longitudinal depth of the first air outlet column in the front-rear direction is less than 1 / 2, and when the second air outlet column is in the initial position, the second air outlet column is located on a transverse side of a front half of the first air outlet column.

[0031] When the second air outlet column is in the initial position, the airflow flowing out of the first air outlet and the airflow flowing out of the second air outlet can be mixed.

[0032] When the second air outlet column is in the initial position, an air guide interval is formed between the second air outlet column and the first air outlet column, so that when air is blown out of the first air outlet and / or the second air outlet, air in the air guide interval is driven to flow forward by negative pressure.

[0033] Optionally, the air conditioner indoor unit further comprises a functional module, an outlet of the functional module is in communication with an upper end or a lower end of the second air outlet column, and the functional module does not work when the first dust filter screen needs to be cleaned or the second dust filter screen needs to be cleaned.

[0034] The functional module is one or more of a fresh air device, an oxygen adding device, a purification device, a humidifying device, and a water washing device.

[0035] The control method of the air conditioner of the present application uses the first air outlet column to blow out heat exchange air flow, uses the second air outlet column to blow out non-heat exchange air flow, and the heat exchange air flow and the non-heat exchange air flow can be mixed after being blown out to form mixed air flow, the temperature of the mixed air flow is closer to room temperature than the heat exchange air flow, the comfort is higher, the wind feeling is softer, the air volume and the air speed are increased, the air supply distance is farther, and the air flow flowing out of the second air outlet can be better diffused to all places in the room. The air flow flowing out of the first air outlet and the air flow flowing out of the second air outlet can also be blown separately, or can be blown separately without mixing. In particular, by moving and rotating the second air outlet column, when the first dust filter screen needs to be cleaned, the second air outlet can be aligned with the first air outlet, and then the non-heat exchange air flow enters the first air outlet to clean the filter screen arranged at the first air inlet, and no special equipment is arranged for cleaning and the like, the cost is low, and the intelligent degree is high. At the same time, the air resistance at the air inlet is reduced, the fan load is reduced, and the air conditioner has an energy-saving effect.

[0036] The above and other objects, advantages and features of the present application will become more apparent from the following detailed description of some embodiments thereof, when taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0037] Some embodiments of the present application will be described in detail with reference to the drawings, wherein the same or like reference numerals that denote the same or like components or parts are used throughout the various drawings. It should be understood by those skilled in the art that the drawings are not necessarily to scale. In the drawings:

[0038] Figure 1 is a schematic front view of an air conditioner indoor unit of an air conditioner according to an embodiment of the present application;

[0039] Figure 2 is Figure 1 a schematic top view of the air conditioner indoor unit shown in

[0040] Figure 3 is Figure 1 a schematic state reference diagram of the air conditioner indoor unit shown in

[0041] Figure 4 is Figure 1 a schematic state reference diagram of the air conditioner indoor unit shown in

[0042] Figure 5 is Figure 1 a schematic state reference diagram of the air conditioner indoor unit shown in

[0043] Figure 6 is Figure 1 a schematic state reference diagram of the air conditioner indoor unit shown in

[0044] Figure 7 isFigure 1 The diagram shows a schematic reference state of an indoor air conditioning unit.

[0045] Figure 8 This is a schematic flowchart of an air conditioner control method according to an embodiment of the present invention. Detailed Implementation

[0046] The following reference Figures 1 to 8 This invention describes a control method for an air conditioner according to an embodiment of the present invention. The terms "front," "rear," "upper," "lower," "top," "bottom," "inner," "outer," and "lateral," 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 the invention and for 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 the invention.

[0047] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," etc., may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of this 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 stated, this indicates that other features are not excluded and may be further included.

[0048] Unless otherwise expressly specified and limited, the terms "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 part; 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.

[0049] Figure 1 This is a schematic front view of an air conditioner indoor unit according to an embodiment of the present invention, such as... Figure 1 As shown, and refer to Figures 2 to 7 This invention provides an indoor air conditioning unit, which includes a first air outlet column 10 and a second air outlet column 20.

[0050] The first air outlet column 10 is vertically columnar, and a first air outlet 11 for blowing air flow is formed on the front side of the first air outlet column 10, and the first air outlet 11 is vertically strip-shaped. A first air inlet 13 in communication with the first air outlet 11 is arranged on the rear side of the first air outlet column 10. The first air inlet 13 is provided with a first dust filter screen.

[0051] Specifically, the air flow flowing out of the first air outlet 11 is a heat exchange air flow. The "heat exchange air flow" refers to the air flow that has completed heat exchange with the heat exchanger 14 of the air conditioner and is used to adjust the indoor temperature. The heat exchanger 14 is connected to the compressor, the heat exchanger of the outdoor unit, the throttling device and other refrigeration elements through pipelines to form a vapor compression refrigeration cycle system. When the air conditioner indoor unit is in a cooling mode, the heat exchange air flow is cold air. When the air conditioner indoor unit is in a heating mode, the heat exchange air flow is hot air. The heat exchange air flow is blown to the indoor environment through the first air outlet 11 to complete the cooling and heating of the indoor environment. The air flow flowing out of the second air outlet 21 is a non-heat exchange air flow, which is used to assist in adjusting the indoor environment. When the air conditioner indoor unit of the embodiment of the present application is running, the first air outlet column 10 and the second air outlet column 20 can be opened alternately or simultaneously.

[0052] In this embodiment of the present application, in particular, the second air outlet column 20 is movably arranged, and the second air outlet column 20 is rotatably arranged around a vertical axis. For example, the second air outlet column 20 can be driven to move and rotate by a driving device. The driving device is configured to at least drive the second air outlet column to move from the initial position to the preset position, and to rotate the second air outlet column around the vertical axis, so that the second air outlet is aligned with the first air outlet when the second air outlet is at the preset position, and then the air flow flowing out of the first air outlet 11 enters the second air outlet column 20 through the second air outlet 21, or the air flow flowing out of the second air outlet 21 enters the first air outlet column 10 through the first air outlet 11, as shown in Figure 3 In some alternative embodiments of the present application, the second air outlet column 20 can also be in other positions when it is at the initial position, such as the position shown in Figure 4

[0053] Figure 8 is a schematic flow chart of a control method of an air conditioner according to an embodiment of the present application; as Figure 5 ​As shown, the embodiment of the present application provides a control method of an air conditioner, comprising: judging whether the first dust filter screen needs to be cleaned; when the first dust filter screen needs to be cleaned, moving the second air outlet column from an initial position to a preset position, and rotating the second air outlet column around a vertical axis to align the second air outlet with the first air outlet, and to make the first air outlet in a state of no air flow outwardly conveying, and the second air outlet in a state of air flow outwardly conveying.

[0054] The embodiment of the present application automatically judges whether the first dust filter screen needs to be cleaned, and when the first dust filter screen needs to be cleaned, automatically moves and rotates the second air outlet column to make the non-heat exchange air flow into the first air outlet 11 to automatically clean the dust filter screen arranged at the first air inlet 13, and no special equipment is arranged for cleaning, thus low cost and energy saving.

[0055] In some embodiments of the present application, the control method of the air conditioner further comprises: detecting the amount of impurities on the first dust filter screen; and when the amount of impurities is greater than a first impurity preset value, determining that the first dust filter screen needs to be cleaned. By directly detecting the amount of impurities on the first dust filter screen, whether the first dust filter screen needs to be cleaned can be accurately judged and determined. In other embodiments of the present application, the control method of the air conditioner further comprises: detecting the working time length of the first dust filter screen; and when the working time length is greater than a first time length preset value, determining that the first dust filter screen needs to be cleaned. By judging the running time, the structure is simple and the control is convenient.

[0056] Further, when the cleaning of the first dust filter screen is stopped, the second air outlet column is returned to the initial position. Wherein, the amount of impurities on the first dust filter screen is detected; and when the amount of impurities is less than a second impurity preset value, the cleaning of the first dust filter screen is stopped; or the time length of air conveying of the second air outlet is detected when the second air outlet is aligned with the first air outlet; and when the time length is greater than a second time length preset value, the cleaning of the first dust filter screen is stopped.

[0057] In some embodiments of the present application, further, the second air outlet column 20 can have at least three positions to meet different air conveying requirements. For example, the driving device comprises a track and a sliding block arranged on the track, and the second air outlet column shell is rotatably mounted on the sliding block. The second air outlet column 20 can stop at any position on the track, such as Figures 3 to 7 as shown, and can also be rotated.

[0058] Further, the track comprises a first track segment and a second track segment. The first track segment extends along the transverse direction and is arranged at the front side of the first air outlet column. The second track segment is connected at one end of the first track segment close to the second air outlet column, and extends from the connected end to the other end of the second track segment in a direction away from the first air outlet column. The preset position is the connection between the first track segment and the second track segment. In some alternative embodiments of the present application, the two ends of the track are connected to form a circle around the first air outlet column 10, i.e. coaxial with the rotation axis of the heat exchange fan.

[0059] In the embodiments of the present application, the second air outlet column 20 has at least two relative positions with respect to the first air outlet column 10. For example, the second air outlet column 20 also has a position in the flow direction of the air flow out of the first air outlet 11 to shield the first air outlet 11 and prevent the first air outlet 11 from directly blowing. For another example, the second air outlet column 20 also has a position between the first air outlet 11 and the user position to shield the first air outlet 11 and prevent the air flow blown out of the first air outlet 11 from directly blowing the person at the user position. Further, the user position can be detected by the human sensing, and then the second air outlet column 20 is controlled to move to the position between the user position and the first air outlet 11. For another example, the second air outlet 21 can be rotated to a position aligned with the first air inlet 13, or the second air inlet 23 can be rotated to a position aligned with the first air outlet 11.

[0060] In some embodiments of the present application, when the second air outlet column is at the initial position, the first air outlet 11 faces forward and the second air outlet column 20, i.e. the first air outlet 11 faces obliquely forward, and the second air outlet 21 faces forward and the first air outlet column 10, i.e. the second air outlet 21 faces obliquely forward. Further, the rear side edge of the second air outlet 21 is in front of the rear side edge of the first air outlet 11, and the front side edge of the second air outlet 21 is behind the front side edge of the first air outlet 11. The front side of the first air outlet column 10 is provided with a display device 18, and the display device 18 is on the side of the first air outlet 11 away from the second air outlet 21.

[0061] In some embodiments of the present application, the first air outlet column 10 is provided with a first air guide for guiding the transverse air outlet direction of the first air outlet 11. The first air guide can comprise a plurality of first air guide plates 12. "Guiding the transverse air outlet direction" means changing the included angle between the air outlet direction and the front-rear direction, such as making the air flow blow forward, left forward, right forward, etc. The second air outlet column 20 is provided with a second air guide for guiding the transverse air outlet direction of the second air outlet 21. The second air guide can comprise a plurality of second air guide plates 22. The main control board of the air conditioner can be electrically connected with the motors of the first air guide and the second air guide at the same time, so as to control the two to act in coordination.

[0062] In particular, when the second air outlet is aligned with the first air outlet, the first air deflector is perpendicular to the plane where the first air outlet is located, and the first air deflector and the second air deflector can be parallel, guiding the airflow flowing out of the first air outlet 11 to the second air outlet 21 or guiding the airflow flowing out of the second air outlet 21 to the first air outlet 11.

[0063] In some embodiments of the present application, the number of the first air deflectors 12 is at least two, and the rotation axis of the last side first air deflector 12 is located at the rear side edge of the first air outlet, or the distance between the rotation axis of the last side first air deflector 12 and the rear side edge of the first air outlet is less than the distance between the rotation axis of the last side first air deflector 12 and the front side edge of the first air outlet. The rotation axis of the last side second air deflector 22 is located at the rear side edge of the second air outlet, or the distance between the rotation axis of the last side second air deflector 22 and the rear side edge of the second air outlet is less than the distance between the rotation axis of the last side second air deflector 22 and the front side edge of the second air outlet; the number of the second air deflectors 22 is one. Preferably, the number of the first air deflectors 12 is two. The number of the second air deflectors 22 is one.

[0064] In some embodiments of the present application, the lower end or the upper end of the second air outlet column 20 is rotatably arranged around a horizontal axis perpendicular to the plane where the first air outlet 11 is located, so that the second air outlet column 20 can be rotated to the front of the first air outlet to block part of the area of the first air outlet. By arranging the second air outlet column 20 obliquely, part of the area of the first air outlet 11 can be blocked, such as the area with the highest temperature, the area with the lowest temperature, etc., so that the temperature of the air outlet of the first air outlet 11 is more uniform, improving the comfort of the user. Of course, it can also be blocked according to the needs of the user to improve the user experience.

[0065] Further, the air conditioner indoor unit further comprises a plurality of temperature sensors arranged in sequence along the vertical direction at the first air outlet 11 to detect the air outlet temperature at a plurality of parts of the first air outlet 11, and then the second air outlet column 20 is rotated to the front side of the area of the first air outlet 11 corresponding to the corresponding air outlet temperature. Specifically, the first air outlet 11 is divided into six areas, and the air outlet temperature of the six areas is detected by six temperature sensors respectively. When heating, the second air outlet column 20 is rotated to the front side of the area of the first air outlet 11 corresponding to the lowest air outlet temperature; when cooling, the second air outlet column 20 is rotated to the front side of the area of the first air outlet 11 corresponding to the highest air outlet temperature.

[0066] In some embodiments of the present application, as shown in FIG. 6, the first air deflector 12 is arranged on the first air outlet 11, and the second air deflector 22 is arranged on the second air outlet 21. Figure 1As shown, at the initial position of the second air outlet column, the air flow out of the first air outlet 11 and the air flow out of the second air outlet 21 can be mixed. The air flow out of the second air outlet 21 can be a non-heat exchange air flow, and the air flow out of the first air outlet 11 and the air flow out of the second air outlet 21 can be mixed after being blown out, forming a mixed air flow. The temperature of the mixed air flow is closer to the room temperature than the heat exchange air flow, and the comfort is higher. The air feeling is more soft, and the air volume and air speed are increased, the air supply distance is farther, and the air flow out of the second air outlet 21 can be better diffused to all parts of the room.

[0067] In some embodiments of the present application, as shown in Figure 1 As shown, at the initial position of the second air outlet column, the air flow out of the first air outlet 11 and the air flow out of the second air outlet 21 can be mixed. The air flow out of the second air outlet 21 can be a non-heat exchange air flow, and the air flow out of the first air outlet 11 and the air flow out of the second air outlet 21 can be mixed after being blown out, forming a mixed air flow. The temperature of the mixed air flow is closer to the room temperature than the heat exchange air flow, and the comfort is higher. The air feeling is more soft, and the air volume and air speed are increased, the air supply distance is farther, and the air flow out of the second air outlet 21 can be better diffused to all parts of the room.

[0068] In some embodiments of the present application, as shown in Figure 1 As shown, the first air outlet 11 and the second air outlet 21 can be a whole vertical bar extending from top to bottom, or can be composed of a plurality of sub-air outlets arranged vertically in an intermittent vertical bar.

[0069] In some embodiments of the present application, since the second air outlet column 20 does not need to be provided with a heat exchanger 14, the second air outlet column 20 can be designed to be thinner, and it is obviously thinner than the first air outlet column 10. This asymmetric design not only meets the air outlet needs, but also makes the appearance of the air conditioner indoor unit more novel and unique, and improves the competitiveness of the product.

[0070] For example, as shown in Figures 2 to 7As shown, the ratio of the width of the second air outlet column 20 in the lateral direction to the width of the first air outlet column 10 in the lateral direction can be less than 1 / 2. The ratio of the depth of the second air outlet column 20 in the front-rear direction to the depth of the first air outlet column 10 in the front-rear direction can be less than 1 / 2, so as to form a double-column differentiated appearance. When the second air outlet column is in the initial position, the front-rear positions of the second air outlet 21 and the first air outlet 11 can be flush or substantially flush, for example, the front-rear distance between the two is not more than 10 cm, so that the non-heat exchange airflow and the heat exchange airflow are better mixed. That is, the second air outlet column 20 is mainly located on one side of the first air outlet column 10 in the lateral direction; or in other words, the second air outlet column 20 is mostly or entirely located on one side of the first air outlet column 10 in the lateral direction.

[0071] In some embodiments of the present application, as shown in Figure 2 The first air outlet column 10 is provided with a heat exchanger 14 and a heat exchange fan 15. The heat exchange fan 15 causes the heat exchange airflow after the heat exchanger 14 to flow out of the first air outlet 11. At this time, the airflow flowing out of the first air outlet 11 is the heat exchange airflow. The heat exchange fan is preferably a cross-flow fan. In some alternative embodiments, the heat exchange fan 15 can be a plurality of axial flow fans or centrifugal fans arranged in sequence in the up-down direction.

[0072] In some embodiments of the present application, as shown in Figure 2 The rear side of the second air outlet column 20 is provided with a second air inlet 23 communicating with the second air outlet 21. The second air outlet column 20 is provided with a vertical strip-shaped air duct communicating with the second air inlet 23 and the second air outlet 21. The air duct is provided with a first fan 31. The first fan 31 causes the airflow to enter the air duct from the second air inlet 23 and then flow out of the first air outlet 11. The first fan 31 is a cross-flow fan.

[0073] Further, the second air inlet 23 is provided with a second dust filter screen. The control method of the air conditioner further comprises: determining whether the second dust filter screen needs to be cleaned; when the second dust filter screen needs to be cleaned, moving the second air outlet column to the preset position from the initial position, and rotating the second air outlet column around the vertical axis to align the second air outlet with the first air outlet, and at the same time, making the second air outlet 21 in a state of no airflow being transported outward, and making the first air outlet 11 in a state of transporting airflow outward. The embodiments of the present application can also clean the filter screen provided at the second air inlet 23, improving practicality. The method of determining whether the second dust filter screen needs to be cleaned can be the same as the method of determining whether the first dust filter screen needs to be cleaned. The method of determining whether the second dust filter screen ends cleaning can be the same as the method of determining whether the first dust filter screen ends cleaning.

[0074] In some embodiments of the present application, when the first filter screen needs to be cleaned and the second filter screen needs to be cleaned, the second air outlet 21 is used to send air flow out first until the first filter screen is cleaned, and then the first air outlet 11 is used to send air flow out. In some alternative embodiments of the present application, when the first filter screen needs to be cleaned and the second filter screen needs to be cleaned, the second air outlet 21 is used to send air flow out and the first air outlet 11 is used to send air flow out alternately.

[0075] In some embodiments of the present application, the air conditioner indoor unit further comprises a functional module 40. The functional module 40 is configured to process the gas flowing therethrough or add substances to the air flow, and the functional module 40 cooperates with the second air outlet column 20. The outlet of the functional module 40 communicates with the upper end or the lower end of the air duct, or the outlet of the functional module 40 communicates with the second air inlet 23. When the second filter screen needs to be cleaned, the functional module 40 does not work. Of course, when the first filter screen needs to be cleaned, the functional module 40 can also work.

[0076] The functional module 40 is one or more of a fresh air device, an oxygen adding device, a purification device, a humidifying device, and a water washing device. When the outlet of the functional module 40 communicates with the second air inlet 23, the corresponding non-heat exchange air flow is one or more of fresh air flow, purification air flow, humidification air flow, oxygenation air flow, and water washing air flow. When the outlet of the functional module 40 communicates with the upper end or the lower end of the air duct, the corresponding non-heat exchange air flow is one or more of fresh air flow, purification air flow, humidification air flow, oxygenation air flow, and water washing air flow mixed with indoor air, that is, the second air outlet 21 simultaneously communicates with an indoor air inlet and the outlet of the functional module 40, and the indoor air of the indoor air inlet is mixed with the substances or gas from the functional module 40. Further, the purification device has a dust removal and / or sterilization function, that is, the purification device is a dust removal device, a sterilization device, or a device having both dust removal and sterilization functions. Of course, the functional module 40 can also use other functional modules 40 capable of changing air quality.

[0077] In some embodiments of the present application, the driving device is further configured to rotate the second air outlet column about a vertical axis at the initial position. Preferably, the vertical axis passes through the second air outlet column 20, and the vertical axis is spaced apart from the second air outlet 21, and of course the vertical axis can also be at other positions. Preferably, the vertical axis is the axis of the first fan 31, and such arrangement can only rotate the second air outlet column 20, and the cross-flow fan does not need to follow the rotation, which is simple in structure and convenient to control, and easy to implement.

[0078] The indoor air conditioner of the embodiment can make the first air outlet column 10 and the second air outlet column 20 open air supply alternatively or simultaneously. The second air outlet column 20 can be rotated to a preset position for air blowing according to requirements, or the second air outlet column 20 can rotate at any time during air blowing, which can rotate clockwise or counterclockwise.

[0079] Specifically, in this embodiment, the airflow flowing out of the second air outlet 21 is formed at least under the action of the functional module 40, and the second air outlet column 20 can rotate, which facilitates the delivery of the airflow flowing out of the second air outlet 21. For example, when the requirement for the airflow flowing out of the second air outlet 21 is relatively high, the delivery of the airflow flowing out of the second air outlet 21 can be accelerated and the second air outlet column 20 can be rotated at the same time, so that the airflow flowing out of the second air outlet 21 can be diffused to more places in the room, and the effect of the functional module 40 can be improved, such as the effect of humidification, fresh air, dust removal, sterilization, oxygen addition, etc. Specifically, the driving device is started when the flow rate of the airflow flowing out of the second air outlet 21 reaches a preset value.

[0080] That is, in some embodiments of the present application, the control method of the air conditioner further comprises: judging whether the second air outlet column is in the initial position; detecting the flow rate of the airflow flowing out of the second air outlet when the second air outlet column is in the initial position; and rotating the second air outlet column when the flow rate of the airflow flowing out of the second air outlet reaches a preset value.

[0081] Further, in some embodiments of the present application, when it is necessary to change the air mixing effect, the second air outlet column 20 can also be rotated around the vertical axis. In this way, the air outlet direction of the airflow flowing out of the second air outlet 21 can be changed, and the air induction amount can be changed, so that different air outlet effects and more air outlet forms can be obtained, the individual needs of users can be met, and the user experience can be improved. Preferably, when the airflow flowing out of the second air outlet 21 is a mixed airflow of one or more of fresh air, purified air, humidified air, oxygenated air, and water-washed air and indoor air, that is, when the second air outlet column 20 also blows indoor air, a stronger air mixing effect can be achieved, and the airflow can be closer to room temperature.

[0082] In some embodiments of the present application, the functional module 40 comprises an air inlet and a second fan, the second fan drives air into the air inlet and then out of the outlet of the functional module 40. For example, the functional module 40 is a fresh air module or the like. At this time, the air conditioner indoor unit can comprise the first fan 31, the second fan, the second air inlet 23 and the air inlet. The air inlet can be in communication with the second air inlet 23, so that the non-heat exchange air flow is one or more of fresh air flow, purified air flow, humidified air flow, oxygenated air flow and water-washed air flow; or the air inlet and the second air inlet 23 are not in communication, and the corresponding non-heat exchange air flow is a mixed air flow formed by one or more of fresh air flow, purified air flow, humidified air flow, oxygenated air flow and water-washed air flow and indoor air. Further, the substance from the functional module 40 can be located on one side or the other side of the first fan 31 facing the second air outlet 21.

[0083] In some alternative embodiments of the present application, when the air inlet is in communication with the second air inlet 23, only one of the first fan 31 and the second fan is needed. In some other alternative embodiments of the present application, when the air inlet is in communication with the lower end or the upper end of the air duct and does not have the second air inlet 23, only the second fan is needed.

[0084] In some embodiments of the present application, the functional module 40 comprises only an outlet, for example, the functional module 40 is a humidifying device, an oxygenating device or the like, and the substance from the functional module 40 can be located on one side or the other side of the first fan 31 facing the second air outlet 21, so as to be mixed into the indoor air from the second air inlet 23.

[0085] In some embodiments of the present application, as shown in Figure 1 The air conditioner indoor unit further comprises a lower shell 30, the first air outlet column 10 and the second air outlet column 20 are arranged at the top end of the lower shell 30, the functional module 40 is arranged in the lower shell 30, and the second fan is an axial fan or a centrifugal fan. The first air outlet column 10 and the second air outlet column 20 are arranged at the top end of the lower shell 30, the lower shell 30 has a supporting effect and also provides a mounting space for the functional module 40, the lower shell 30 is provided with a fresh air inlet and at least one indoor air inlet, which are in communication with the air inlet of the second fan alternatively or simultaneously. The fresh air inlet is connected with a fresh air pipe to introduce fresh air flow from the outside.

[0086] In some embodiments of the present application, the functional module 40 is a humidifying device, which delivers water mist to the lower end of the air duct, the water mist mixes into the air flow entering from the second air inlet, and the mixed air blows out from the second air outlet 21. The air conditioner indoor unit can have the following working modes: when the indoor humidity is less than the first preset humidity, neither the functional module 40 nor the first fan 31 works; when the indoor humidity is less than the second preset humidity and greater than the first preset humidity, the functional module 40 works and the first fan 31 works at low speed; when the indoor humidity is less than the third preset humidity and greater than the second preset humidity, the functional module 40 works and the first fan 31 works at high speed; when the indoor humidity is greater than the third preset humidity, the functional module 40 works and the first fan 31 works at high speed, and the second air outlet column 20 rotates clockwise or counterclockwise to blow water vapor to the surroundings in a rotating manner, improving the humidifying effect; the second air outlet column 20 can rotate continuously in the counterclockwise direction or in the clockwise direction. The first preset humidity is less than the second preset humidity, and the second preset humidity is less than the third preset humidity. In some other embodiments of the present application, the second air outlet column 20 can rotate to a certain position and remain at the position for a period of time.

[0087] Further, when the functional module 40 is of other types, similar modes as described above can also be adopted. Further, the fresh air device can be controlled according to the concentration of indoor carbon dioxide, the dust removal device can be controlled according to the concentration of indoor PM2.5, the sterilization device can be controlled according to the concentration of indoor bacteria, and the oxygenation device can be controlled according to the oxygen concentration.

[0088] At this point, those skilled in the art should recognize that, although the present application has been shown and described in detail in the above embodiments, many other variations or modifications can be directly determined or deduced from the disclosure of the present application according to the principles of the present application without departing from the spirit and scope of the present application. Therefore, the scope of the present application should be understood and recognized as covering all these other variations or modifications.

Claims

1. A control method of an air conditioner including an air conditioner indoor unit, the control method comprising: determining whether a user is present in a room in which the air conditioner indoor unit is installed; and controlling the air conditioner indoor unit based on the determination result. The air conditioner indoor unit comprises a first air outlet column and a second air outlet column; the first air outlet column and the second air outlet column are arranged in a transverse direction; a first air outlet is formed on the front side of the first air outlet column, and a first air inlet is arranged on the rear side of the first air outlet column and communicates with the first air outlet, and a first dust filter screen is arranged at the first air inlet; a second air outlet is formed on the front side of the second air outlet column; and the control method of the air conditioner comprises the following steps. It is judged whether the first dust filter screen needs to be cleaned; When the first dust filter screen needs to be cleaned, the second air outlet column is moved from an initial position to a preset position, and the second air outlet column is rotated around a vertical axis, so that the second air outlet is aligned with the first air outlet, the first air outlet is in a state of no air flow outwardly conveying, the second air outlet is in a state of outwardly conveying air flow, and then the air flow flowing out of the second air outlet flows to the first air inlet through the first air outlet.

2. The control method of the air conditioner according to claim 1, characterized by, Further comprising: detecting the amount of impurities on the first dust filter screen; When the amount of impurities is greater than a first impurity preset value, it is determined that the first dust filter screen needs to be cleaned.

3. The control method of the air conditioner according to claim 1, wherein Further comprising: detecting the working time length of the first dust filter screen; When the working time length is greater than a first time length preset value, it is determined that the first dust filter screen needs to be cleaned.

4. The control method of the air conditioner according to claim 1, characterized by, Further comprising: When the cleaning of the first dust filter screen is stopped, the second air outlet column returns to the initial position; wherein the amount of impurities on the first dust filter screen is detected; When the amount of impurities is less than a second impurity preset value, the cleaning of the first dust filter screen is stopped; or the time length of air flow sent by the second air outlet is detected when the second air outlet is aligned with the first air outlet; when the time length is greater than a second time length preset value, the cleaning of the first dust filter screen is stopped.

5. The control method of the air conditioner according to claim 1, wherein a second air inlet is arranged on the rear side of the second air outlet column and communicates with the second air outlet, and a second dust filter screen is arranged at the second air inlet; and the control method of the air conditioner further comprises the following steps. It is judged whether the second dust filter screen needs to be cleaned; When the second dust filter screen needs to be cleaned, the second air outlet column is moved from an initial position to a preset position, and the second air outlet column is rotated around a vertical axis, so that the second air outlet is aligned with the first air outlet, the second air outlet is in a state of no air flow outwardly conveying, the first air outlet is in a state of outwardly conveying air flow, and then the air flow flowing out of the first air outlet flows to the second air inlet through the second air outlet.

6. The control method of the air conditioner according to claim 5, wherein when the first dust filter screen needs to be cleaned and the second dust filter screen needs to be cleaned, the second air outlet outwardly conveys air flow first until the cleaning of the first dust filter screen is completed, and then the first air outlet outwardly conveys air flow; or When the first dust filter screen needs to be cleaned and the second dust filter screen needs to be cleaned, the second air outlet outwardly conveying air flow and the first air outlet outwardly conveying air flow are alternately performed. Further comprising: It is judged whether the second air outlet column is in an initial position; 7. The control method of the air conditioner according to claim 1, wherein ​ ​ detecting a flow rate of the airflow flowing out of the second air outlet when the second air outlet column is in the initial position; causing the second air outlet column to rotate when the flow rate of the airflow flowing out of the second air outlet reaches a preset value; the vertical axis passes through the second air outlet column, and the vertical axis is spaced apart from the second air outlet.

8. The control method of the air conditioner according to claim 1, characterized by, The air conditioner further comprises a track and a sliding block arranged on the track, and the second air outlet column shell is rotatably arranged on the sliding block. The first air outlet is in a vertical strip shape, and the second air outlet is in a vertical strip shape. When the second air outlet column is in the initial position, the first air outlet column and the second air outlet column are arranged in a transverse direction, the first air outlet faces forward and faces the second air outlet column, the second air outlet faces forward and faces the first air outlet column, a rear side edge of the second air outlet is in front of a rear side edge of the first air outlet, and a front side edge of the second air outlet is behind a front side edge of the first air outlet.

9. The control method of the air conditioner according to claim 1, wherein a ratio of a transverse width of the second air outlet column to a transverse width of the first air outlet column is less than 1 / 2, a ratio of a longitudinal depth of the second air outlet column in a front-rear direction to a longitudinal depth of the first air outlet column in the front-rear direction is less than 1 / 2, and when the second air outlet column is in the initial position, the second air outlet column is arranged on a transverse side of a front half of the first air outlet column. When the second air outlet column is in the initial position, the airflow flowing out of the first air outlet and the airflow flowing out of the second air outlet can be mixed. When the second air outlet column is in the initial position, an air guiding interval is formed between the second air outlet column and the first air outlet column, so that when air is discharged from the first air outlet and / or the second air outlet, the air in the air guiding interval is driven to flow forward by a negative pressure.

10. The control method of the air conditioner according to claim 5, wherein The air conditioner further comprises a functional module, an outlet of the functional module is in communication with an upper end or a lower end of the second air outlet column, and the functional module is not operated when the first dust filter screen needs to be cleaned or the second dust filter screen needs to be cleaned. The functional module is one or more of a fresh air device, an oxygen adding device, a purification device, a humidifying device, and a water washing device.

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