Control method for air conditioner indoor unit, and air conditioner indoor unit

Abstract

A control method for an air conditioner indoor unit (100). The air conditioner indoor unit comprises an air guide assembly (3), wherein the air guide assembly comprises a rotatable first air guide member (31) and a rotatable second air guide member (32). The control method comprises: controlling at least one of a first air guide member and a second air guide member to perform reciprocating rotation, so as to switch between a first state and a second state, wherein an air output end of at least one of the first air guide member and the second air guide member is controlled to rotate towards the other, such that an air guide assembly switches from the first state to the second state.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application is based on and claims priority to Chinese patent application No. 202310893014X, titled "CONTROL METHOD FOR AIR CONDITIONER INDOOR UNIT AND AIR CONDITIONER INDOOR UNIT" and filed on July 19, 2023, the entire contents of which are incorporated herein by reference.FIELD

[0002] The present disclosure relates to the technical field of air conditioning devices, and more particularly, to a control method for an air conditioner indoor unit and an air conditioner indoor unit.BACKGROUND

[0003] An air conditioner refers to a device that artificially regulates and controls parameters such as a temperature, humidity, and a flow velocity of ambient air inside a building or a structure.

[0004] In the related art, a rotatable air deflector is usually disposed at an air outlet of an air conditioner. Adjustment of an air outlet direction of the air conditioner may be achieved through vertical rotation of the air deflector.

[0005] In the above technical solution, the outlet air flow of the air conditioner is relatively concentrated, resulting in a small air coverage area on the human body, a strong local wind sensation, and thus poor comfort.SUMMARY

[0006] In view of the above problems, the present disclosure provides a control method for an air conditioner indoor unit, which can drive an opening at an air outlet end of an air guide channel to switch between an open state and a closed state. In this way, an air outlet area of the air conditioner can vary periodically between a larger value and a smaller value, which is conducive to simulating natural wind and improving comfort of the outlet air flow of the air conditioner.

[0007] A control method for an air conditioner indoor unit is provided according to an embodiment of the present disclosure. The air conditioner indoor unit includes an air guide assembly, the air guide assembly including a first air guide member and a second air guide member that are rotatable. The control method includes: controlling at least one of the first air guide member and the second air guide member to perform reciprocating rotation to cause the air guide assembly to switch between a first state and a second state, where a distance between an air outlet end of the first air guide member and an air outlet end of the second air guide member is D1 in the first state, and the distance between the air outlet end of the first air guide member and the air outlet end of the second air guide member is D2 in the second state, where D1>D2. The air guide assembly switches from the first state to the second state when the air outlet end of at least one of the first air guide member and the second air guide member rotates towards the air outlet end of the other of the first air guide member and the second air guide member.

[0008] With the control method for the air conditioner indoor unit according to the embodiment of the present disclosure, the first air guide member and the second air guide member can be controlled to switch between the first state and the second state. In comparison, an opening at an air outlet end of an air guide channel is larger in the first state, which may be understood as the "open" state, while an opening at the air outlet end of the air guide channel is smaller in the second state, which may be understood as the "closed" state. Therefore, the control method of the present disclosure can drive the opening at the air outlet end of the air guide channel to switch between the open state and the closed state. In this way, the air outlet area of the air conditioner can vary periodically between the larger value and the smaller value, which is conducive to simulating the natural wind and improving the comfort of the outlet air flow of the air conditioner.

[0009] Optionally, the air outlet end of the first air guide member and the air outlet end of the second air guide member are controlled to rotate towards each other, to cause the air guide assembly to switch from the first state to the second state.

[0010] Optionally, controlling the air outlet end of the first air guide member and the air outlet end of the second air guide member to rotate towards each other includes: controlling the air outlet end of the first air guide member and the air outlet end of the second air guide member to rotate towards each other simultaneously, or controlling the air outlet end of the first air guide member to rotate towards the air outlet end of the second air guide member and controlling the air outlet end of the second air guide member to rotate towards the air outlet end of the first air guide member in any order.

[0011] Optionally, in the second state, the distance between the air outlet end of the first air guide member and the air outlet end of the second air guide member is greater than 0.

[0012] Optionally, the control method further includes, prior to controlling the air guide assembly to switch from the second state to the first state: controlling the air guide assembly to be in an air sweeping state; and in the air sweeping state, controlling the air guide assembly to maintain the second state and controlling the first air guide member and the second air guide member to rotate synchronously.

[0013] Optionally, the control method further includes: in response to completion of the air sweeping state, controlling the air outlet end of the at least one of the first air guide member and the second air guide member to rotate away from the air outlet end of the other of the first air guide member and the second air guide member, to cause the air guide assembly to switch from the second state to the first state.

[0014] Optionally, in response to completion of the air sweeping state, when a position of the first air guide member is the same as a position of the first air guide member in the first state, the air outlet end of the second air guide member is controlled to rotate away from the air outlet end of the first air guide member, to cause the air guide assembly to switch from the second state to the first state; or in response to completion of the air sweeping state, when a position of the second air guide member is the same as a position of the second air guide member in the first state, the air outlet end of the first air guide member is controlled to rotate away from the air outlet end of the second air guide member, to cause the air guide assembly to switch from the second state to the first state; or in response to completion of the air sweeping state, when the position of the first air guide member deviates from the position of the first air guide member in the first state, and the position of the second air guide member deviates from the position of the second air guide member in the first state, the air outlet end of any one of the first air guide member and the second air guide member is controlled to rotate away from the air outlet end of the other of the first air guide member and the second air guide member, to cause the air guide assembly to switch from the second state to the first state.

[0015] Optionally, in the first state, the at least one of the first air guide member and the second air guide member is parallel to an inner wall of an air outlet.

[0016] Optionally, a rotation axis of the first air guide member and a rotation axis of the second air guide member are parallel to or coincident with each other; and / or the rotation axis of the first air guide member and the rotation axis of the second air guide member are parallel to a length direction of an air outlet.

[0017] Optionally, a length of a first connecting line connecting two free end points of a cross section of the first air guide member is greater than a length of a second connecting line connecting two free end points of a cross section of the second air guide member.

[0018] Optionally, the air conditioner indoor unit includes a cooling mode, and the control method further includes: in the cooling mode, controlling the first air guide member to be located below the second air guide member, and controlling the first air guide member to guide air downward and forward in at least the first state.

[0019] Optionally, the cooling mode includes a cooling-air sweeping mode, and the control method further comprises: in the cooling-air sweeping mode, performing the step of controlling the at least one of the first air guide member and the second air guide member to perform reciprocating rotation to cause the air guide assembly to switch between the first state and the second state, and prior to controlling the air guide assembly to switch from the second state to the first state, controlling the air guide assembly to maintain the second state and controlling the first air guide member and the second air guide member to rotate synchronously. The first air guide member switches between a state of guiding air forward and upward and a state of guiding air forward and downward.

[0020] Optionally, the air conditioner indoor unit includes a heating mode, and the control method further comprises: in the heating mode, controlling the first air guide member to be located above the second air guide member.

[0021] Optionally, the control method further comprises: controlling the second air guide member to abut against an inner wall of an air outlet in the first state and in the heating mode.

[0022] Optionally, the heating mode includes a heating-air sweeping mode, and the control method further comprises: in the heating air sweeping mode, performing the step of controlling the at least one of the first air guide member and the second air guide member to perform reciprocating rotation to cause the air guide assembly to switch between the first state and the second state, and prior to controlling the air guide assembly to switch from the second state to the first state, controlling the air guide assembly to maintain the second state and controlling the first air guide member and the second air guide member to rotate synchronously. The second air guide member continues to guide air forward and downward.

[0023] Optionally, an air conditioner indoor unit is provided according to the embodiment of the present disclosure. The air conditioner indoor unit includes: a casing having an air outlet; an air guide assembly including a first air guide member and a second air guide member, the first air guide member and the second air guide member being rotatably arranged at the casing; and a control module configured to perform the control method for the air conditioner indoor unit according to the above technical solutions.

[0024] Optionally, a length of a first connecting line connecting two free end points of a cross section of the first air guide member is greater than a length of a second connecting line connecting two free end points of a cross section of the second air guide member.

[0025] Optionally, the first air guide member is provided with a plurality of louvers arranged at intervals.

[0026] Optionally, a ratio of the length of the first connecting line to the length of the second connecting line ranges from 1 to 1.8.

[0027] Optionally, the air guide assembly has a closed state. In the closed state, the first air guide member cooperates with the second air guide member to block the air outlet.

[0028] Optionally, in the closed state, an end of the first air guide member and an end of the second air guide member that mate each other are arranged in a staggered manner in a front-rear direction.

[0029] Additional aspects and advantages of the present disclosure will be provided at least in part in the following description, or will become apparent at least in part from the following description, or can be learned from practicing of the present disclosure.BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present disclosure will become more apparent and more understandable from the following description of embodiments taken in conjunction with the accompanying drawings. FIG. 1 is a schematic view of an air conditioner indoor unit in a shutdown state according to an embodiment of the present disclosure. FIG. 2 is a schematic view of an air conditioner indoor unit in a first state in a cooling mode according to an embodiment of the present disclosure. FIG. 3 is a schematic view of an air conditioner indoor unit in a second state before air sweeping in a cooling mode according to an embodiment of the present disclosure. FIG. 4 is a schematic view of an air conditioner indoor unit in a second state after air sweeping in a cooling mode according to an embodiment of the present disclosure. FIG. 5 is a schematic view of an air conditioner indoor unit in a first state in a heating mode according to an embodiment of the present disclosure. FIG. 6 is a schematic view of an air conditioner indoor unit in a second state before air sweeping in a heating mode according to an embodiment of the present disclosure. FIG. 7 is a schematic view of an air conditioner indoor unit in a second state after air sweeping in a heating mode according to an embodiment of the present disclosure. FIG. 8 is a schematic view of a control method for an air conditioner indoor unit according to an embodiment of the present disclosure.

[0031] Reference numerals of the accompanying drawings: 100 air conditioner indoor unit; 1 casing; 11 heat exchange air duct; 12 air inlet; 13 air outlet; 2 indoor heat exchanger; 3 air guide assembly; 31 first air guide member; 311 first air guide surface; 32 second air guide member; 321 second air guide surface; 33 air guide channel; 4 louver; L1 first connecting line; L2 second connecting line.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Embodiments of the present disclosure will be described in detail below with reference to examples thereof as illustrated in the accompanying drawings, throughout which same or similar elements, or elements having same or similar functions, are denoted by same or similar reference numerals. The embodiments described below with reference to the drawings are illustrative, and are intended to explain, rather than limiting, the present disclosure.

[0033] In the description of the present disclosure, it should be understood that, the orientation or the position indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "over", "below", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "anti-clockwise", "axial", "radial", and "circumferential" should be construed to refer to the orientation and the position as shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. Therefore, the features associated with "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0034] In the description of the present disclosure, it should be noted that, unless otherwise clearly stipulated and limited, terms such as "mount," "connect," and "connect to" should be understood in a broad sense. For example, it may be a fixed connection or a detachable connection or connection as one piece; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate; or internal communication of two components. For those skilled in the art, specific meanings of the above-mentioned terms in the present disclosure can be understood according to specific circumstances.

[0035] A control method for an air conditioner indoor unit 100 according to the embodiments of the present disclosure is described below with reference to FIG. 1 to FIG. 8.

[0036] Reference is made to FIG. 1, FIG. 2, and FIG. 3, which illustrate an air conditioner indoor unit 100 to which the control method according to the embodiments of the present disclosure is applicable. The air conditioner indoor unit 100 includes a casing 1 and an air guide assembly 3. The casing 1 is provided with a heat exchange air duct 11. The casing 1 further has an air inlet 12 and an air outlet 13 that are in communication with the heat exchange air duct 11. When the air conditioner indoor unit 100 is in operation, air from outside the casing 1 enters the heat exchange air duct 11 through the air inlet 12, performs heat exchange with an indoor heat exchanger 2 inside the casing 1, and is then discharged into an indoor space through the air outlet 13, to adjust an indoor temperature.

[0037] An air guide assembly 3 is disposed at the air outlet 13 of the casing 1. The air guide assembly 3 includes a first air guide member 31 and a second air guide member 32. The first air guide member 31 and the second air guide member 32 are rotatably disposed at the casing 1. The first air guide member 31 and the second air guide member 32 are configured to guide an air outlet direction of the air outlet 13. When the first air guide member 31 is used to guide the outlet air flow of the air conditioner, a side of the first air guide member 31 facing an interior of the casing 1 is an air inlet end of the first air guide member 31, and a side of the first air guide member 31 facing the indoor space is an air outlet end of the first air guide member 31. When the second air guide member 32 is used to guide the outlet air flow of the air conditioner, a side of the second air guide member 32 facing the interior of the casing 1 is an air inlet end of the second air guide member 32, and a side of the second air guide member 32 facing the indoor space is an air outlet end of the second air guide member 32. When both the first air guide member 31 and the second air guide member 32 are used to guide the outlet air flow of the air conditioner, an air guide channel 33 is defined between the first air guide member 31 and the second air guide member 32. Two opposite sides of the air guide channel 33 are connected to the heat exchange air duct 11 and the indoor space, respectively. Under the guidance of the air guide channel 33, an air outlet direction of the air guide channel 33 is a direction in which the air guide channel 33 extends from the heat exchange air duct 11 to the indoor space. When the air outlet direction of the air guide channel 33 needs to be adjusted, the air guide assembly 3 is driven to rotate relative to the casing 1 to adjust a position of the air guide channel 33 relative to the air outlet 13, so as to obtain different air outlet directions.

[0038] It should also be noted that the air guide channel 33 may guide most of the fluid flowing out of the heat exchange air duct 11. In some embodiments, part of the fluid may flow out from between the air guide assembly 3 and an inner wall of the air outlet 13. In some other embodiments, the first air guide member 31 rotates such that a portion of the first air guide member 31abuts against the inner wall of the air outlet 13. The second air guide member 32 also rotates such that a portion of second air guide member 32 abuts against the inner wall of the air outlet 13. In this way, the air guide channel 33 may guide all the fluid flowing out of the heat exchange air duct 11.

[0039] As illustrated in FIG. 2, FIG. 3, and FIG. 8, the control method includes: controlling at least one of the first air guide member 31 and the second air guide member 32 to perform reciprocating rotation to cause the air guide assembly 3 to switch between a first state and a second state, where in the first state, a distance between an air outlet end of the first air guide member 31 and an air outlet end of the second air guide member 32 is D1, and in the second state, a distance between the air outlet end of the first air guide member 31 and the air outlet end of the second air guide member 32 is D2, where D1>D2.

[0040] When the air guide assembly 3 switches from the first state to the second state, the air outlet end of at least one of the first air guide member 31 and the second air guide member 32 is controlled to rotate towards the air outlet end of the other of the first air guide member 31 and the second air guide member 32, to cause the distance between the air outlet end of the first air guide member 31 and the air outlet end of the second air guide member 32 to decrease from D1 to D2.

[0041] When the air guide assembly 3 switches from the second state to the first state, the air outlet end of the at least one of the first air guide member 31 and the second air guide member 32 is controlled to rotate away from the air outlet end of the other of the first air guide member 31 and the second air guide member 32, to cause the distance between the air outlet end of the first air guide member 31 and the air outlet end of the second air guide member 32 to increase from D2 to D1.

[0042] During switching from the first state to the second state, the air outlet end of the at least one of the first air guide member 31 and the second air guide member 32 rotates towards the air outlet end of the other of the first air guide member 31 and the second air guide member 32, that is, the air outlet end of the first air guide member 31 and the air outlet end of the second air guide member 32 approach each other. In other words, during the switching from the first state to the second state, an opening at an air outlet end of the air guide channel 33 gradually narrows.

[0043] Conversely, during switching from the second state to the first state, the air outlet end of the at least one of the first air guide member 31 and the second air guide member 32 rotates away from the air outlet end of the other of the first air guide member 31 and the second air guide member 32, that is, the air outlet end of the first air guide member 31 and the air outlet end of the second air guide member 32 move away from each other. In other words, during the switching from the second state to the first state, the opening at the air outlet end of the air guide channel 33 gradually widens.

[0044] It should also be noted that, at least one of the first air guide member 31 and the second air guide member 32 reciprocally rotating to switch between the first state and the second state may include: the first air guide member 31 performing reciprocating rotation while the second air guide member 32 remaining stationary relative to the casing 1 to implement the switching between the first state and the second state; or the first air guide member 31 remaining stationary relative to the casing 1 while the second air guide member 32 performing reciprocating rotation to implement the switching between the first state and the second state; or both the first air guide member 31 and the second air guide member 32 performing reciprocating rotation to implement the switching between the first state and the second state.

[0045] With the control method for the air conditioner indoor unit 100 according to the embodiment of the present disclosure, the first air guide member 31 and the second air guide member 32 can be controlled to switch between the first state and the second state. In comparison, the opening at the air outlet end of the air guide channel 33 is larger in the first state, which may be understood as an "open" state, where the outlet air flow is relatively dispersed. The opening at the air outlet end of the air guide channel 33 is smaller in the second state, which may be understood as a "closed" state, where the outlet air flow is relatively concentrated. Therefore, the control method of the present disclosure can drive the opening at the air outlet end of the air guide channel 33 to switch between the open state and the closed state. In this way, an air outlet area of the air conditioner can vary between a larger value and a smaller value, such fluctuation is conducive to simulating natural wind and thus improving comfort of the outlet air flow of the air conditioner.

[0046] In some specific embodiments, the air outlet end of the first air guide member 31 and the air outlet end of the second air guide member 32 are controlled to rotate towards each other, to cause the air guide assembly to switch from the first state to the second state. Both the first air guide member 31 and the second air guide member 32 rotate, which can increase a speed of switching from the first state to the second state.

[0047] In some embodiments, controlling the air outlet end of the first air guide member 31 and the air outlet end of the second air guide member 32 to rotate towards each other includes: controlling the air outlet end of the first air guide member 31 and the air outlet end of the second air guide member 32 to rotate towards each other simultaneously; or controlling the air outlet end of the first air guide member 31 to rotate towards the air outlet end of the second air guide member 32, and then controlling the air outlet end of the second air guide member 32 to rotate towards the air outlet end of the first air guide member 31; or controlling the air outlet end of the second air guide member 32 to rotate towards the air outlet end of the first air guide member 31, and then controlling the air outlet end of the first air guide member 31 to rotate towards the air outlet end of the second air guide member 32. Regardless of an order of rotation of the first air guide member 31 and the second air guide member 32, it is only necessary to make the air outlet end of the first air guide member 31 and the air outlet end of the second air guide member 32 rotate towards each other.

[0048] In some embodiments, in the second state, the distance between the air outlet end of the first air guide member 31 and the air outlet end of the second air guide member 32 is greater than 0.

[0049] Through the above technical solution, the air conditioner indoor unit 100 can also output air through the air guide channel 33 in the second state, avoiding a situation where the air guide assembly 3 completely blocks the outlet air flow from the air outlet 13.

[0050] As illustrated in FIG. 2, FIG. 3, and FIG. 4, in some embodiments, before controlling the air guide assembly 3 to switch from the second state to the first state, the air guide assembly 3 is controlled to be in an air sweeping state; and in the air sweeping state, the air guide assembly 3 is controlled to maintain the second state and the first air guide member 31 and the second air guide member 32 are controlled to rotate synchronously.

[0051] That is, through the above control method, the air guide assembly 3 switches from the "open" state to the "closed" state, then performs air sweeping in the "closed" state, returns to the "open" state after completing the air sweeping, and then repeats the above movements. Air sweeping avoids local overcooling, increases a range of the outlet air flow of the air conditioner, and thus improves an effect of the air conditioner indoor unit 100 in adjusting the indoor temperature.

[0052] In some embodiments, in response to completion of the air sweeping state, i.e., upon completion of controlling the air guide assembly 3 to maintain the second state and controlling the first air guide member 31 and the second air guide member 32 to rotate synchronously, controlling the air outlet end of the at least one of the first air guide member 31 and the second air guide member 32 to rotate away from the air outlet end of the other of the first air guide member 31 and the second air guide member 32, to cause the air guide assembly 3 to switch from the second state to the first state.

[0053] In some embodiments, in response to completion of the air sweeping state, when a position of the first air guide member 31 is the same as a position of the first air guide member 31 in the first state, the air outlet end of the second air guide member 32 is controlled to rotate away from the air outlet end of the first air guide member 31, to cause the air guide assembly 3 to switch from the second state to the first state.

[0054] In other embodiments, in response to completion of the air sweeping state, when a position of the second air guide member 32 is the same as a position of the second air guide member 32 in the first state, the air outlet end of the first air guide member 31 is controlled to rotate away from the air outlet end of the second air guide member 32, to cause the air guide assembly 3 to switch from the second state to the first state.

[0055] In other embodiments, in response to completion of the air sweeping state, when the position of the first air guide member 31 deviates from the position of the first air guide member 31 in the first state, and the position of the second air guide member 32 deviates from the position of the second air guide member 32 in the first state, controlling the air outlet end of any one of the first air guide member 31 and the second air guide member 32 to rotate away from the air outlet end of the other of the first air guide member 31 and the second air guide member 32, to cause the air guide assembly 3 to switch from the second state to the first state.

[0056] As illustrated in FIG. 2 and FIG. 5, in some embodiments, in the first state, at least one of the first air guide member 31 and the second air guide member 32 is parallel to an inner wall of an air outlet 13.

[0057] It should be understood that the first air guide member 31 and / or the second air guide member 32 may be exactly parallel to the inner wall of the air outlet 13. Alternatively, there may be a certain angle between the first air guide member 31 and / or the second air guide member 32 and the inner wall of the air outlet 13, but the first air guide member 31 and / or the second air guide member 32 is approximately parallel to the inner wall of the air outlet 13.

[0058] Through the above technical solution, obstruction posed by the first air guide member 31 and the second air guide member 32 to the outlet air flow of the air conditioner in the first state can be reduced, lowering the loss of the outlet air flow.

[0059] In some embodiments, a rotation axis of the first air guide member 31 and a rotation axis of the second air guide member 32 are parallel to or coincident with each other. Through the above technical solution, when the air outlet end of the first air guide member 31 and / or the air outlet end of the second air guide member 32 rotates, the distance between the air outlet end of the first air guide member 31 and the air outlet end of the second air guide member 32 changes synchronously in a length direction of the first air guide member 31, making the outlet air flow of the air conditioner more uniform in the length direction of the first air guide member 31.

[0060] In other embodiments, the rotation axis of the first air guide member 31 and the rotation axis of the second air guide member 32 are parallel to a length direction of an air outlet 13.

[0061] Through the above technical solution, a length direction of the air outlet end of the air guide channel 33 is always parallel to the length direction of the air outlet 13, which can help reduce the loss of the outlet air flow and increase the outlet air volume.

[0062] In still other embodiments, the rotation axis of the first air guide member 31 and the rotation axis of the second air guide member 32 are coincident and parallel to the length direction of the air outlet 13.

[0063] Through the above technical solution, mounting of the first air guide member 31 and the second air guide member 32 can be facilitated, an occupied space of the air guide assembly 3 can be reduced, and thus a space utilization rate of the air conditioner indoor unit 100 can be improved.

[0064] As illustrated in FIG. 3, in some embodiments, a length of a first connecting line L1 connecting two free end points of a cross section of the first air guide member 31 is greater than a length of a second connecting line L2 connecting two free end points of a cross section of the second air guide member 32. It should be noted that the cross section here refers to a section perpendicular to the length direction. The two free end points of the cross section of the first air guide member 31 refer to two endpoints on a circumference in a rotational direction of the first air guide member 31 that are farthest apart from each other. The two free end points of the cross section of the second air guide member 32 refer to two endpoints on a circumference in a rotational direction of the second air guide member 32 that are farthest apart from each other.

[0065] In the above technical solution, the length of the first connecting line L1 being greater than the length of the second connecting line L2 may be understood as a width of the first air guide member 31 being greater than that of the second air guide member 32. That is, the first air guide member 31 has a larger contact area with the outlet air flow of the air conditioner, improving an air guiding effect of the first air guide member 31.

[0066] In some embodiments, a ratio of the length of the first connecting line L1 to the length of the second connecting line L2 ranges from 1 to 1.8.

[0067] Through the above technical solution, the ratio of the length of the first connecting line L1 to the length of the second connecting line L2 is limited within a predetermined range, preventing the first air guide member 31 from being excessively wide compared to the second air guide member 32, which can result in an insignificant air guiding effect of the second air guide member 32. Therefore, a cooperative air guiding effect of the first air guide member 31 and the second air guide member 32 can be ensured.

[0068] As illustrated in FIG. 4 and FIG. 7, in other embodiments, the length of the first connecting line L1 connecting two free end points of the cross section of the first air guide member 31 is greater than the length of the second connecting line L2 connecting two free end points of the cross section of the second air guide member 32.

[0069] Moreover, the first air guide member 31 and the second air guide member 32 rotate around the same rotation axis, allowing the first air guide member 31 and the second air guide member 32 to rotate relative to each other. That is, the first air guide member 31 may rotate to a position above the second air guide member 32. Due to a larger width of the first air guide member 31, when the first air guide member 31 is located above the second air guide member 32, the first air guide member 31 may guide more outlet air flow of the air conditioner downward. The first air guide member 31 may alternatively rotate to a position below the second air guide member 32. When the first air guide member 31 is located below the second air guide member 32, the first air guide member 31 may guide more outlet air flow of the air conditioner upward.

[0070] As illustrated in FIG. 2, FIG. 3, and FIG. 4, in some embodiments, the air conditioner indoor unit 100 includes a cooling mode. In the cooling mode, the first air guide member 31 is controlled to be located below the second air guide member 32. The first air guide member 31 is controlled in at least the first state to guide air downward and forward.

[0071] Through the above technical solution, in the cooling mode, the first air guide member 31 is located below the second air guide member 32. Therefore, when the first air guide member 31 guides air upward and forward, more cold air can be guided upward to form sky-curtain air supply, improving a cooling effect of the air conditioner indoor unit 100. Further, in this embodiment, controlling the first air guide member 31 to guide air downward and forward in the first state can allow the cold air to be guided downward during cooling, blowing directly towards the user to provide cooling for the user, and enhancing practicality of the air conditioner indoor unit 100.

[0072] In some further embodiments, the cooling mode includes a cooling-air sweeping mode. In the cooling-air sweeping mode, the step of the controlling the at least one of the first air guide member 31 and the second air guide member 32 to perform reciprocating rotation to cause the air guide assembly 3 to switch between the first state and the second state is performed. In addition, before controlling the air guide assembly 3 to switch from the second state to the first state, the air guide assembly 3 is controlled to maintain the second state and the first air guide member 31 and the second air guide member 32 are controlled to rotate synchronously. The first air guide member 31 switches between a state of guiding air forward and upward and a state of guiding air forward and downward.

[0073] Through the above cooling-air sweeping mode, the opening at the air outlet end of the air guide channel 33 can be driven to switch between the open state and the closed state, causing a volume of the cold air flow outputted by the air conditioner to fluctuate. In addition, the cold air flow can sweep in an up-down direction in the cooling mode, accelerating diffusion of the cold air flow in the indoor space. Moreover, during air sweeping, the air outlet end of the air guide channel 33 remains in the "closed" state, reducing the opening at the air outlet end of the air guide channel 33, which can concentrate the outlet air flow, and improve an air sweeping effect.

[0074] In some embodiments, in the cooling mode, the first air guide member 31 is located below the second air guide member 32. As illustrated in FIG. 2, in the first state, the first air guide member 31 is controlled to be oriented forward and downward. During switching from the first state to the second state, the first air guide member 31 is controlled to rotate upward by θ1°, and the second air guide member 32 is controlled to rotate downward by θ2°. As illustrated in FIG. 3, the first air guide member 31 remains oriented forward and downward in this case. Then, the air guide assembly 3 is controlled to perform air sweeping. That is, the first air guide member 31 and the second air guide member 32 rotate upward synchronously by θ2° to complete the air sweeping. As illustrated in FIG. 4, in this case the first air guide member 31 is controlled to be oriented forward and upward. Subsequently, the first air guide member 31 is controlled to rotate downward by θ1°+θ2° to return to the first state, and then the air guide assembly 3 is controlled to repeat the above movements.

[0075] Here, θ1° ranges from 10° to 40°, θ2° ranges from 10° to 40°. θ1° may be equal to, greater than, or smaller than θ2°.

[0076] Through the above technical solution, in the cooling mode of the air conditioner indoor unit 100, the outlet air flow of the air conditioner fluctuates, and during air sweeping, the cold air is guided upward, resulting in a larger coverage area of the outlet air flow of the air conditioner. In addition, the air outlet mode according to this embodiment of the present disclosure can make distribution of the outlet air flow of the air conditioner more uniform, reducing sensation of excessive local cooling.

[0077] As illustrated in FIG. 5, FIG. 6, and FIG. 7, in some embodiments, the length of the first connecting line L1 connecting two free end points of the cross section of the first air guide member 31 is greater than the length of the second connecting line L2 connecting two free end points of the cross section of the second air guide member 32. The air conditioner indoor unit 100 includes a heating mode. In the heating mode, the first air guide member 31 is controlled to be located above the second air guide member 32.

[0078] Through the above technical solution, in the heating mode of the air conditioner indoor unit 100, more warm air can be guided downward to form floor-carpet air supply, improving an effect of adjusting the indoor temperature by the warm air.

[0079] In some embodiments, the heating mode includes a heating-air sweeping mode. In heating-air sweeping mode, the step of the controlling the at least one of the first air guide member 31 and the second air guide member 32 to perform reciprocating rotation to cause the air guide assembly 3 to switch between the first state and the second state is performed. Prior to controlling the air guide assembly 3 to switch from the second state to the first state, the air guide assembly 3 is controlled to maintain the second state, and the first air guide member 31 and the second air guide member 32 are controlled to rotate synchronously. The second air guide member 32 continues to guide air forward and downward.

[0080] Through the above technical solution, in the heating mode of the air conditioner indoor unit 100, the outlet air flow of the air conditioner fluctuates, and during air sweeping, the warm air is guided downward, resulting in a larger coverage area of the outlet air flow of the air conditioner and improving the effect adjusting the indoor temperature by the warm air.

[0081] In some embodiments, in the heating mode, the first air guide member 31 is located above the second air guide member 32. As illustrated in FIG. 5, in the first state, the first air guide member 31 is controlled to be oriented forward and downward. During switching from the first state to the second state, the first air guide member 31 is controlled to rotate downward by θ3°, and the second air guide member 32 is controlled to rotate upward by θ4°. As illustrated in FIG. 6, the first air guide member 31 remains oriented forward and downward in this case. Then, the air guide assembly 3 is controlled to perform air sweeping. That is, the first air guide member 31 and the second air guide member 32 rotate downward synchronously by θ4° to complete the air sweeping. As illustrated in FIG. 7, in this case the first air guide member 31 is controlled to be oriented backward and downward. Subsequently, the first air guide member 31 is controlled to rotate upward by θ3°+θ4° to return to the first state, and then the air guide assembly 3 is controlled to repeat the above movements.

[0082] Here, θ3° ranges from 10° to 40°, θ4° ranges from 10° to 40°. θ3° may be equal to, greater than, or smaller than θ4°.

[0083] As illustrated in FIG. 5, in some embodiments, the second air guide member 32 is controlled to abut against the inner wall of the air outlet 13 in the first state and in the heating mode, to prevent the outlet air flow of the air conditioner from passing between the second air guide member 32 and the inner wall of the air outlet 13, allowing the air guide channel 33 to guide more of the outlet air flow of the air conditioner.

[0084] An air conditioner indoor unit 100 is provided according to an embodiment of the present disclosure. The air conditioner indoor unit 100 includes: the casing 1, the air guide assembly 3, and a control module. The casing 1 is provided with the heat exchange air duct 11. The casing 1 has the air inlet 12 and the air outlet 13 that are in communication with the heat exchange air duct 11. When the air conditioner indoor unit 100 is in operation, air from outside the casing 1 enters the heat exchange air duct 11 through the air inlet 12, performs heat exchange with the indoor heat exchanger 2 inside the casing 1, and is then discharged into the indoor space through the air outlet 13, adjusting the indoor temperature.

[0085] The air guide assembly 3 is disposed at the air outlet 13 of the casing 1. The air guide assembly 3 includes a first air guide member 31 and a second air guide member 32. The first air guide member 31 and the second air guide member 32 are rotatably arranged at the casing 1. The first air guide member 31 and the second air guide member 32 are configured to guide the direction of the outlet air flow at the air outlet 13. When the first air guide member 31 is used to guide the outlet air flow t of the air conditioner, the side of the first air guide member 31 facing the interior of the casing 1 is the air inlet end of the first air guide member 31, and the side of the first air guide member 31 facing the indoor space is the air outlet end of the first air guide member 31. When the second air guide member 32 is used to guide the outlet air flow of the air conditioner, the side of the second air guide member 32 facing the interior of the casing 1 is the air inlet end of the second air guide member 32, and the side of the second air guide member 32 facing the indoor space is the air outlet end of the second air guide member 32. When both the first air guide member 31 and the second air guide member 32 are used to guide the outlet air flow of the air conditioner, the air guide channel 33 is defined between the first air guide member 31 and the second air guide member 32. Two opposite sides of the air guide channel 33 are connected to the heat exchange air duct 11 and the indoor space, respectively. Under the guidance of the air guide channel 33, the air outlet direction of the air guide channel 33 is the direction in which the air guide channel 33 extends from the heat exchange air duct 11 to the indoor space. When the air outlet direction of the air guide channel 33 needs to be adjusted, the air guide assembly 3 is driven to rotate relative to the casing 1 to adjust the position of the air guide channel 33 relative to the air outlet 13, to obtain different air outlet directions.

[0086] The control module is disposed in the casing 1 and is configured to perform the control method in the above technical solutions.

[0087] As illustrated in FIG. 2, FIG. 3, and FIG. 4, with the air conditioner indoor unit 100 according to the embodiment of the present disclosure, the first air guide member 31 and the second air guide member 32 can be controlled to switch between the first state and the second state. That is, the opening at the air outlet end of the air guide channel 33 can be driven to switch between the open state and the closed state, causing the air outlet area of the air conditioner to fluctuate, which is conducive to simulating the natural wind and thus improving the comfort of the outlet air flow of the air conditioner.

[0088] In some embodiments, each of the first air guide member 31 and the second air guide member 32 is configured as an air deflector.

[0089] In some embodiments, the first air guide member 31 has a first air guide surface 311 formed at a side of the first air guide member 31 facing the rotation axis of the first air guide member 31. The first air guide surface 311 is a flat surface. In other embodiments, the first air guide surface 311 may be an arc-shaped surface.

[0090] In some embodiments, the second air guide member 32 has a second air guide surface 321 formed at a side of the second air guide member 32 facing the rotation axis of the second air guide member 32. The second air guide surface 321 is a flat surface. In other embodiments, the second air guide surface 321 may be an arc-shaped surface.

[0091] In some embodiments, the length of the first connecting line L1 connecting two free end points of the cross section of the first air guide member 31 is greater than the length of the second connecting line L2 connecting two free end points of the cross section of the second air guide member 32.

[0092] In the above technical solution, the length of the first connecting line L1 being greater than the length of the second connecting line L2 may be understood as the width of the first air guide member 31 being greater than that of the second air guide member 32. That is, the first air guide member 31 has the larger contact area with the outlet air flow of the air conditioner, which can improve the air guiding effect of the first air guide member 31.

[0093] In some embodiments, the ratio of the length of the first connecting line L1 to the length of the second connecting line L2 ranges from 1 to 1.8.

[0094] Through the above technical solution, the ratio of the length of the first connecting line L1 to the length of the second connecting line L2 is limited within the predetermined range, preventing the first air guide member 31 from being excessively wide compared to the second air guide member 32, which can result in the insignificant air guiding effect of the second air guide member 32. Therefore, the cooperative air guiding effect of the first air guide member 31 and the second air guide member 32 can be ensured.

[0095] As illustrated in FIG. 2, FIG. 3, and FIG. 4, in some embodiments, the first air guide member 31 is provided with a plurality of louvers 4 arranged at intervals, which can further guide a direction of the outlet air flow of the air conditioner.

[0096] In some embodiments, the louvers 4 are disposed at the side of the first air guide member 31 facing the rotation axis of the first air guide member 3, i.e., the louvers 4 are located within the air guide channel 33, which can disperse the outlet air flow of the air conditioner to reduce wind sensation. The plurality of louvers 4 are arranged at intervals in the length direction of the first air guide member 31 and are swingable in the length direction of the first air guide member 31. That is, the louvers 4 can enable adjustment of the outlet air flow of the air conditioner in the length direction of the first air guide member 31.

[0097] In some embodiments, the air conditioner indoor unit 100 is a wall-mounted indoor unit. The length direction of the first air guide member 31 is parallel to a left-right direction of the air conditioner indoor unit 100. That is, rotation of the first air guide member 31 and the second air guide member 32 relative to the casing 1 can achieve adjustment of the outlet air flow of the air conditioner in an up-down direction. Swinging of the louvers 4 in the length direction of the first air guide member 31 can achieve adjustment of the outlet air flow of the air conditioner in the left-right direction.

[0098] As illustrated in FIG. 1, in some embodiments, the air guide assembly 3 has a closed state. In the closed state, the first air guide member 31 cooperates with the second air guide member 32 to block the air outlet 13.

[0099] In the above technical solution, cooperation of the first air guide member 31 and the second air guide member 32 can block the air outlet 13, which on the one hand can reduce entry of external impurities into the air duct through the air outlet 13, and on the other hand can hide an internal structure of the casing 1. In this way, aesthetics of the air conditioner indoor unit 100 can be improved.

[0100] In some embodiments, in the closed state, an end of the first air guide member 31 and an end of the second air guide member 32 that mate each other are arranged in a staggered manner in a front-rear direction, to block a gap between the first air guide member 31 and the second air guide member 32, which can help enhance appearance of the air conditioner indoor unit 100 when the air conditioner indoor unit 100 is turned off.

[0101] Of course, in other embodiments, the air outlet 13 may be covered by a separate cover plate. The cover plate may be configured to move to avoid the air outlet 13 when the air conditioner indoor unit 100 is started, and move to block the air outlet 13 and the air guide assembly 3 when the air conditioner indoor unit 100 is turned off.

[0102] Reference throughout this specification to "an embodiment", "some embodiments", "illustrative embodiments", "an example", "a specific example", or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. The appearances of the above phrases in various places throughout this specification are not necessarily referring to the same embodiment or example. In addition, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0103] Although embodiments of the present disclosure have been illustrated and described, it is conceivable for those skilled in the art that various changes, modifications, replacements, and variations can be made to these embodiments without departing from the principles and spirit of the present disclosure. The scope of the present disclosure shall be defined by the claims as appended and their equivalents.

Claims

1. A control method for an air conditioner indoor unit, wherein the air conditioner indoor unit comprises an air guide assembly, the air guide assembly comprising a first air guide member and a second air guide member that are rotatable, and the control method comprises: controlling at least one of the first air guide member and the second air guide member to perform reciprocating rotation to cause the air guide assembly to switch between a first state and a second state, wherein a distance between an air outlet end of the first air guide member and an air outlet end of the second air guide member is D1 in the first state, and the distance between the air outlet end of the first air guide member and the air outlet end of the second air guide member is D2 in the second state, where D1>D2, wherein the air guide assembly switches from the first state to the second state when the air outlet end of at least one of the first air guide member and the second air guide member rotates towards the air outlet end of the other of the first air guide member and the second air guide member.

2. The control method for the air conditioner indoor unit according to claim 1, wherein: the air outlet end of the first air guide member and the air outlet end of the second air guide member are controlled to rotate towards each other, to cause the air guide assembly to switch from the first state to the second state.

3. The control method for the air conditioner indoor unit according to claim 2, wherein controlling the air outlet end of the first air guide member and the air outlet end of the second air guide member to rotate towards each other comprises: controlling the air outlet end of the first air guide member and the air outlet end of the second air guide member to rotate towards each other simultaneously, or controlling the air outlet end of the first air guide member to rotate towards the air outlet end of the second air guide member and controlling the air outlet end of the second air guide member to rotate towards the air outlet end of the first air guide member in any order.

4. The control method for the air conditioner indoor unit according to any one of claims 1 to 3, wherein in the second state, the distance between the air outlet end of the first air guide member and the air outlet end of the second air guide member is greater than 0.

5. The control method for the air conditioner indoor unit according to claim 4, further comprising, prior to controlling the air guide assembly to switch from the second state to the first state: controlling the air guide assembly to be in an air sweeping state; and in the air sweeping state, controlling the air guide assembly to maintain the second state and controlling the first air guide member and the second air guide member to rotate synchronously.

6. The control method for the air conditioner indoor unit according to claim 5, further comprising: in response to completion of the air sweeping state, controlling the air outlet end of the at least one of the first air guide member and the second air guide member to rotate away from the air outlet end of the other of the first air guide member and the second air guide member, to cause the air guide assembly to switch from the second state to the first state.

7. The control method for the air conditioner indoor unit according to claim 6, wherein: in response to completion of the air sweeping state, when a position of the first air guide member is the same as a position of the first air guide member in the first state, the air outlet end of the second air guide member is controlled to rotate away from the air outlet end of the first air guide member, to cause the air guide assembly to switch from the second state to the first state; or in response to completion of the air sweeping state, when a position of the second air guide member is the same as a position of the second air guide member in the first state, the air outlet end of the first air guide member is controlled to rotate away from the air outlet end of the second air guide member, to cause the air guide assembly to switch from the second state to the first state; or in response to completion of the air sweeping state, when the position of the first air guide member deviates from the position of the first air guide member in the first state, and the position of the second air guide member deviates from the position of the second air guide member in the first state, the air outlet end of any one of the first air guide member and the second air guide member is controlled to rotate away from the air outlet end of the other of the first air guide member and the second air guide member, to cause the air guide assembly to switch from the second state to the first state.

8. The control method for the air conditioner indoor unit according to any one of claims 1 to 7, wherein: in the first state, the at least one of the first air guide member and the second air guide member is parallel to an inner wall of an air outlet.

9. The control method for the air conditioner indoor unit according to any one of claims 1 to 8, wherein: a rotation axis of the first air guide member and a rotation axis of the second air guide member are parallel to or coincident with each other; and / or the rotation axis of the first air guide member and the rotation axis of the second air guide member are parallel to a length direction of an air outlet.

10. The control method for the air conditioner indoor unit according to any one of claims 1 to 9, wherein: a length of a first connecting line connecting two free end points of a cross section of the first air guide member is greater than a length of a second connecting line connecting two free end points of a cross section of the second air guide member.

11. The control method for the air conditioner indoor unit according to claim 10, wherein the air conditioner indoor unit comprises a cooling mode, and the control method further comprises: in the cooling mode, controlling the first air guide member to be located below the second air guide member; and controlling the first air guide member to guide air downward and forward in at least the first state.

12. The control method for the air conditioner indoor unit according to claim 11, wherein the cooling mode comprises a cooling-air sweeping mode, and the control method further comprises: in the cooling-air sweeping mode, performing the step of controlling the at least one of the first air guide member and the second air guide member to perform reciprocating rotation to cause the air guide assembly to switch between the first state and the second state; and prior to controlling the air guide assembly to switch from the second state to the first state, controlling the air guide assembly to maintain the second state and controlling the first air guide member and the second air guide member to rotate synchronously, wherein the first air guide member switches between a state of guiding air forward and upward and a state of guiding air forward and downward.

13. The control method for the air conditioner indoor unit according to any one of claims 10 to 12, wherein the air conditioner indoor unit comprises a heating mode, and the control method further comprises: in the heating mode, controlling the first air guide member to be located above the second air guide member.

14. The control method for the air conditioner indoor unit according to claim 13, further comprising controlling the second air guide member to abut against an inner wall of an air outlet in the first state and in the heating mode.

15. The control method for the air conditioner indoor unit according to claim 14, wherein the heating mode comprises a heating-air sweeping mode, and the control method further comprises: in the heating-air sweeping mode, performing the step of controlling the at least one of the first air guide member and the second air guide member to perform reciprocating rotation to cause the air guide assembly to switch between the first state and the second state; and prior to controlling the air guide assembly to switch from the second state to the first state, controlling the air guide assembly to maintain the second state and controlling the first air guide member and the second air guide member to rotate synchronously, wherein the second air guide member continues to guide air forward and downward.

16. An air conditioner indoor unit, comprising: a casing having an air outlet; an air guide assembly comprising a first air guide member and a second air guide member, wherein the first air guide member and the second air guide member are rotatably arranged at the casing; and a control module configured to perform the control method for the air conditioner indoor unit according to any one of claims 1 to 15.

17. The air conditioner indoor unit according to claim 16, wherein: a length of a first connecting line connecting two free end points of a cross section of the first air guide member is greater than a length of a second connecting line connecting two free end points of a cross section of the second air guide member.

18. The air conditioner indoor unit according to claim 17, wherein the first air guide member is provided with a plurality of louvers arranged at intervals.

19. The air conditioner indoor unit according to claim 17 or 18, wherein a ratio of the length of the first connecting line to the length of the second connecting line ranges from 1 to 1.8.

20. The air conditioner indoor unit according to any one of claims 16 to 19, wherein the air guide assembly has a closed state, wherein in the closed state, the first air guide member cooperates with the second air guide member to block the air outlet.

21. The air conditioner indoor unit according to claim 20, wherein in the closed state, an end of the first air guide member and an end of the second air guide member that mate each other are arranged in a staggered manner in a front-rear direction.

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