Swing blade device for air conditioner and air conditioner

Abstract

The utility model provides a swing blade device for an air conditioner and the air conditioner. The swinging blade device comprises a core shaft, a rotary drum and swinging blades arranged on the rotary drum; the multiple rotary drums are sequentially connected in the axial direction of the mandrel. In every two adjacent and connected rotary drums, a plurality of grooves are formed in one end of one rotary drum, and the grooves are sequentially formed in the circumferential direction of the rotary drum; a plurality of first protruding blocks are arranged at one corresponding end of one rotary drum, a plurality of second protruding blocks are arranged at the other corresponding end of the other rotary drum, each first protruding block is inserted into one groove, and a rotating gap is formed between each first protruding block and the corresponding groove in the circumferential direction of the rotary drum, so that the two rotary drums can rotate relatively. The two swing blades can synchronously move in the rotating process of the swing blade device and can also generate certain relative rotation, air supply of the air conditioner is remarkably diversified, the diversified air supply effect enables the feeling of a user to be better, and the air conditioner is deeply loved by the user.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, and in particular to a louver device for an air conditioner and an air conditioner. Background Technology

[0002] In most conventional wall-mounted air conditioner models, a deflector is installed at the air outlet. This deflector can be used to open or close the air outlet and can also adjust the angle of the airflow by flipping it up or down. However, due to the limitation of the deflector's vertical flipping mechanism, it can only adjust the vertical direction of the airflow and cannot adjust the horizontal angle of the airflow. Therefore, some wall-mounted air conditioner models also have a louvered air guide device in their air outlet duct to adjust the horizontal angle of the airflow. This allows the airflow to be guided both vertically and horizontally. However, this single air guiding method is not conducive to improving the diversity of air supply and enhancing the user experience.

[0003] Based on this, the inventor provides a novel swing device, such as Figure 1 As shown, the swing device includes a rotating shaft 11 and multiple inclined blades 12 disposed on the rotating shaft 11. The blades 12 are flat and inclined relative to the rotating shaft, and the multiple blades 12 rotate synchronously with the rotating shaft 11, which makes the airflow more natural and diverse. However, this solution cannot solve the above-mentioned problems well. Utility Model Content

[0004] In view of the above problems, this utility model is proposed to provide a louver device and air conditioner for an air conditioner that overcomes or at least partially solves the above problems. It can solve the technical problem of the limited air guiding methods in existing air conditioners and is conducive to improving the diversity of air supply and user experience.

[0005] Specifically, this utility model provides a louver device for an air conditioner, which includes a spindle and multiple rotating cylinders;

[0006] The rotating drum is mounted on the mandrel, and multiple rotating drums are connected sequentially along the axial direction of the mandrel; some or all of the rotating drums are provided with swing blades; in each pair of adjacent and connected rotating drums:

[0007] One end of the rotating drum is provided with a plurality of grooves, and the plurality of grooves are arranged sequentially along the circumferential direction of the rotating drum;

[0008] One end of the other rotating cylinder is provided with a plurality of first protrusions, each first protrusion being inserted into a groove, and each first protrusion having a rotational gap with the corresponding groove in the circumferential direction of the rotating cylinder, so that the two rotating cylinders can rotate relative to each other.

[0009] Optionally, the central angle corresponding to the rotation gap is between 1 / 360 degrees and 1 / 3 degree.

[0010] Optionally, the central angle corresponding to the rotation gap is between 1 / 13 degree and 1 / 4 degree.

[0011] Optionally, in each of two adjacent and connected rotating cylinders, one end of one rotating cylinder is provided with a plurality of second protrusions, and the plurality of second protrusions define a plurality of grooves.

[0012] Optionally, the outer peripheral wall of the first protrusion and the outer peripheral wall of the corresponding rotating cylinder are on the same arc surface, and the outer peripheral wall of the second protrusion and the outer peripheral wall of the corresponding rotating cylinder are on the same arc surface;

[0013] On the same rotating drum, the central angle corresponding to the outer peripheral wall of the first protrusion is either not equal to or equal to the central angle corresponding to the outer peripheral wall of the other first protrusion.

[0014] Optionally, the ratio between the length of the first protrusion extending in the axial direction of the mandrel and the circumference of the outer peripheral wall of the rotating cylinder is 1 / 20 to 1 / 2.

[0015] The ratio between the length of the first protrusion extending along the axial direction of the mandrel and the length of the groove extending along the axial direction of the mandrel is 9 / 10 to 11 / 10.

[0016] Optionally, the ratio between the length of the first protrusion extending along the axial direction of the mandrel and the circumference of the outer peripheral wall of the rotating cylinder is 1 / 8 to 1 / 3.

[0017] Optionally, the two oppositely arranged sides of each groove are a first side and a second side, respectively; a slot is provided on the first side and / or the second side, and an insertion block or insertion piece is provided on the corresponding first protrusion for insertion into the slot; or,

[0018] Each of the first protrusions has two oppositely arranged sides, namely a third side and a fourth side; the third side and / or the fourth side are provided with slots, and the corresponding side of the groove is provided with an insertion block or insertion piece for insertion into the slot.

[0019] Optionally, in each pair of adjacent and connected rotating cylinders, one end of each rotating cylinder has two grooves, which are arranged symmetrically.

[0020] Each of the blades is plate-shaped and is inclined relative to the corresponding rotating cylinder, which passes through the center of the corresponding blade.

[0021] This utility model also provides an air conditioner, which includes:

[0022] A housing, on which an air outlet is provided;

[0023] The aforementioned oscillating blade device is disposed at the air outlet;

[0024] A drive unit, disposed within the housing, is configured to drive one of the rotating drums to rotate forward and / or in the reverse direction around the spindle.

[0025] The present invention relates to a swing blade device for an air conditioner and an air conditioner in which multiple rotating cylinders are provided, some or all of which are equipped with swing blades. Two adjacent rotating cylinders rotate relative to each other at a certain angle through corresponding protrusions and grooves. This allows two adjacent swing blades to move synchronously during the rotation of the swing blade device and also generate a certain relative rotation. This significantly makes the air supply of the air conditioner more diversified. The diversified air supply effect makes the user experience better and is well received by users.

[0026] Furthermore, in the swing blade device and air conditioner of this utility model, since there is a spindle and the rotating cylinder is fitted on the spindle, the spindle can improve the strength of the swing blade device and prevent skewing when the two rotating cylinders are directly connected. In particular, when there is a gap between the protrusions and grooves on the two rotating cylinders, it ensures the coaxiality of the two rotating cylinders, which is beneficial to the relative rotation and power transmission between the two rotating cylinders.

[0027] Furthermore, the arrangement and corresponding dimensions of the first and second protrusions in the air conditioner louver device and air conditioner of this utility model can simplify the structure of the rotating cylinder, facilitate manufacturing and processing, and provide sufficient strength, while also reducing manufacturing costs and improving practicality.

[0028] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0029] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0030] Figure 1 This is a schematic structural diagram of the louver device in an air conditioner in the prior art;

[0031] Figure 2 This is a schematic structural diagram of a swing blade device according to an embodiment of the present invention;

[0032] Figure 3 yes Figure 2 A schematic structural diagram of the oscillating blade section in the oscillating blade device shown;

[0033] Figure 4 yes Figure 3 A schematic structural diagram of the oscillating blade section from another perspective;

[0034] Figure 5 This is a schematic diagram of the rotation gap in a swashplate device according to an embodiment of the present invention;

[0035] Figure 6 This is a schematic front view of the swing blade portion in a swing blade device according to an embodiment of the present invention;

[0036] Figure 7 This is a schematic side view of the swing blade portion in a swing blade device according to an embodiment of the present invention;

[0037] Figure 8 This is another schematic side view of the swing blade portion in a swing blade device according to an embodiment of the present invention;

[0038] Figure 9 This is a schematic diagram of the connection between two adjacent rotating cylinders in a swing blade device according to an embodiment of the present invention;

[0039] Figure 10 This is a schematic structural diagram of the indoor unit of an air conditioner according to an embodiment of the present utility model;

[0040] Figure 11 yes Figure 10 The diagram shows the swing blade device in an indoor unit in a moving position.

[0041] Figure 12 yes Figure 10 The diagram shows the swing blade device in another moving position in the indoor unit.

[0042] Figure 13 yes Figure 10 The diagram shows the swing blade device in another moving position in the indoor unit.

[0043] In the attached image:

[0044] 20. Oscillating blade section; 21. Rotating cylinder; 22. Oscillating blade; 23. First protrusion; 24. Second protrusion; 25. Groove; 26. Rotation gap; 28. Insertion block; 30. Spindle; 40. Housing; 41. Air outlet; 42. Rotating bracket. Detailed Implementation

[0045] The following reference Figures 1 to 13 This invention describes a louver device for an air conditioner and an air conditioner according to embodiments of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0046] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" 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 utility model according to the specific circumstances.

[0047] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] Figure 2 This is a schematic structural diagram of a swaying blade device according to an embodiment of the present invention, as shown below. Figure 2 As shown, and refer to Figures 3 to 13 This utility model provides a louver device for an air conditioner. The louver device includes a spindle 30 and multiple rotating cylinders 21. The rotating cylinders 21 are mounted on the spindle 30, and the multiple rotating cylinders 21 are connected sequentially along the axial direction of the spindle 30. Some or all of the rotating cylinders 21 are provided with louver blades 22, and the structure consisting of the rotating cylinders 21 and the louver blades 22 can also be referred to as the louver section 20. The louver blades 22 are usually in the shape of plates or sheets and are inclined relative to the rotating cylinders 21. The multiple rotating cylinders 21 are connected sequentially along the axial direction of the spindle 30 so that the multiple louver blades 22 are arranged sequentially along the length direction of the spindle 30. In order to enable two adjacent louver blades 22 to rotate synchronously or relative to each other, in each pair of adjacent and connected rotating cylinders 21: one end of one rotating cylinder 21 is provided with multiple grooves 25, and the multiple grooves 25 are arranged sequentially along the circumferential direction of the rotating cylinder 21. The other rotating cylinder 21 has a plurality of first protrusions 23 at one end, each first protrusion 23 being inserted into a groove 25, and each first protrusion 23 and its corresponding groove 25 having a rotational gap 26 in the circumferential direction of the rotating cylinder 21, so that the two rotating cylinders 21 can rotate relative to each other. Specifically, the maximum rotation angle that the two rotating cylinders can rotate relative to each other is the central angle corresponding to the rotational gap 26.

[0050] In this embodiment of the invention, the oscillating blade device drives one of the rotating cylinders 21 to rotate around a first direction. This rotating cylinder 21 drives another rotating cylinder 21 to rotate synchronously, and the other rotating cylinder 21 drives the next rotating cylinder 21 to rotate synchronously. Multiple oscillating blades 22 can rotate synchronously, providing a novel air delivery method. Figure 11 Exercise to Figure 12 Furthermore, when the rotating drum 21 is driven to rotate in a second direction opposite to the first direction, due to the existence of the rotation gap 26, the rotating drum 21 will first rotate by itself to the maximum rotation angle, and then drive another rotating drum 21 to rotate synchronously. The other rotating drum 21 will first rotate by itself to the maximum rotation angle, and then drive the next rotating drum 21 to rotate synchronously, as follows... Figure 11 Exercise to Figure 13 During this air supply process, the oscillating blades 22 do not rotate synchronously, providing a novel air supply method. This air supply can also be called oscillating air supply or natural air supply, making the airflow intermittent, achieving a feeling of intermittent air supply. In this embodiment of the invention, this process only provides one rotation mode; whether the two adjacent rotating cylinders 21 rotate synchronously or relative to each other first can be controlled according to the actual working conditions. That is to say, by controlling the rotation direction and rotation time of the first rotating cylinder 21, multiple air supply modes can be achieved.

[0051] Therefore, in the embodiment of the swing blade device for air conditioners of this utility model, since there are multiple swing blades 22, two adjacent swing blades 22 can generate a certain angle of relative rotation through the protrusions and grooves 25 on the rotating cylinder 21. This ensures that the two swing blades 22 can move synchronously during the rotation of the swing blade device and generate a certain relative rotation, which significantly makes the air supply of the air conditioner more diversified. The diversified air supply effect makes the user feel better and is loved by users.

[0052] Furthermore, since the oscillating blade device has a spindle 30, and the rotating cylinder 21 is mounted on the spindle 30, the spindle 30 can improve the strength of the oscillating blade device and prevent skewing when the two rotating cylinders 21 are directly connected. Especially when there is a gap between the protrusions and grooves 25 on the two rotating cylinders 21, it ensures the coaxiality of the two rotating cylinders 21, which is beneficial for the relative rotation and power transmission between the two rotating cylinders 21. Moreover, the rotation of the multiple oscillating blades 22 does not change their own positions; that is, when the rotating cylinder 21 rotates, it does not undergo any lateral or vertical displacement. Therefore, compared with the connecting rods that allow lateral movement in conventional oscillating blade 22 air guiding devices, this invention does not require space to be reserved for lateral movement, thus reducing the space occupied by the oscillating blade 22 mechanism and improving the utilization rate of the indoor unit's internal space.

[0053] In some embodiments of this utility model, such as Figure 5 As shown, the central angle α corresponding to the rotation gap 26 is between 1 / 360 degrees and 1 / 3 degree. Preferably, the central angle α corresponding to the rotation gap 26 is between 1 / 13 degrees and 1 / 4 degree. The setting of the rotation gap 26 can achieve excellent oscillating air supply effect, and can ensure the fitting strength between the first protrusion 23 and the groove 25, ensure the structural strength of the rotating cylinder 21, improve the service life of the rotating cylinder 21, and prevent power transmission failure due to damage.

[0054] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, in each pair of adjacent and connected rotating cylinders 21, one end of one rotating cylinder 21 is provided with a plurality of second protrusions 24, which define a plurality of grooves 25. The arrangement and corresponding dimensions of the first protrusions 23 and the second protrusions 24 make the structure of the rotating cylinder 21 simple, easy to manufacture and process, and have sufficient strength, while also making the manufacturing cost low and improving its practicality.

[0055] In some embodiments of this utility model, such as Figure 3 and Figure 4As shown, on the rotating cylinder 21 that simultaneously has a first protrusion 23 and a second protrusion 24, the overall structure formed by multiple first protrusions 23 and the overall structure formed by multiple second protrusions 24 are identical. The arrangement of the first protrusions 23 and the second protrusions 24 facilitates the reversible installation of each rotating cylinder 21. In other words, the structures at both ends of the rotating cylinder 21 with the first protrusions 23 and the second protrusions 24 are identical, so that when the rotating cylinder 21 is connected to another rotating cylinder 21, the end of the rotating cylinder 21 with the first protrusion 23 can be connected to the other rotating cylinder 21, or the end of the rotating cylinder 21 with the second protrusion 24 can be connected to the other rotating cylinder 21. This allows for corresponding installation according to specific needs during assembly.

[0056] In some embodiments of this utility model, such as Figures 3 to 8 As shown, the outer peripheral wall of the first protrusion 23 and the corresponding outer peripheral wall of the rotating cylinder 21 are on the same arc surface, as are the outer peripheral walls of the second protrusion 24 and the corresponding rotating cylinder 21. The inner peripheral wall of the first protrusion 23 and the corresponding inner peripheral wall of the rotating cylinder 21 are on the same arc surface, as are the inner peripheral walls of the second protrusion 24 and the corresponding inner peripheral wall of the rotating cylinder 21. On the same rotating cylinder 21, the central angle corresponding to the outer peripheral wall of the first protrusion 23 is either unequal to or equal to the central angle corresponding to the outer peripheral wall of the other first protrusion 23. In this embodiment, the thickness of the first protrusion 23 is comparable to the thickness of the rotating cylinder 21, and the thickness of the second protrusion 24 is comparable to the thickness of the rotating cylinder 21. This ensures that the rotating cylinder 21, the first protrusion 23, and the second protrusion 24 have sufficient strength, facilitates the rotation of the rotating cylinder 21 on the spindle 30, and reduces the number of pits on the outer peripheral walls of the multiple rotating cylinders 21, improving aesthetics and preventing airflow obstruction due to entering the pits.

[0057] In some embodiments of this utility model, such as Figures 3 to 8 As shown, the ratio between the length of the first protrusion 23 extending axially along the spindle 30 and the circumference of the outer peripheral wall of the rotating cylinder 21 is 1 / 20 to 1 / 2. The ratio between the length of the first protrusion 23 extending axially along the spindle 30 and the length of the groove 25 extending axially along the spindle 30 is 9 / 10 to 11 / 10. Preferably, the ratio between the length of the first protrusion 23 extending axially along the spindle 30 and the circumference of the outer peripheral wall of the rotating cylinder 21 is 1 / 8 to 1 / 3. The first protrusion 23 and the second protrusion 24 have sufficient length to improve the effectiveness of transmission and prevent structural damage and power transmission failure.

[0058] In some embodiments of this utility model, the sum of the central angle β corresponding to the first protrusion 23, the central angle γ corresponding to the second protrusion 24, and the central angle α corresponding to the rotation gap 26 is 360 degrees, such as... Figure 9As shown, the sum of the central angle β corresponding to the two first protrusions 23, the central angle γ corresponding to the two second protrusions 24, and the central angle α corresponding to the two rotation gaps 26 is 360 degrees, i.e., β*2+γ*2+α*2=360 degrees. This ensures that there are no other redundant structures at the end of the corresponding rotating drum 21, making the structure more compact, stronger, with better power transmission, and lower cost.

[0059] In some embodiments of this utility model, such as Figures 7 to 9 As shown, the two oppositely arranged sides of each groove 25 are a first side and a second side, respectively. A slot is provided on the first side and / or the second side, and an insertion block 28 or insertion piece for inserting into the slot is provided on the corresponding first protrusion 23. In some other embodiments of this invention, the two oppositely arranged sides of each first protrusion 23 are a third side and a fourth side, respectively. A slot is provided on the third side and / or the fourth side, and an insertion block 28 or insertion piece for inserting into the slot is provided on the side of the corresponding groove 25.

[0060] In this embodiment of the utility model, by setting a slot and an insertion block 28 or an insertion piece, the coaxiality between two adjacent rotating cylinders 21 is ensured. When the two adjacent rotating cylinders 21 rotate relative to each other, the slot and the insertion block 28 or the insertion piece cooperate with each other and can have a certain guiding effect.

[0061] In some embodiments of this utility model, such as Figure 2 As shown, each oscillating blade 22 is plate-shaped and is inclined relative to the corresponding rotating cylinder 21, with the rotating cylinder 21 passing through the center of the corresponding oscillating blade 22. Furthermore, the included angle between the oscillating blade 22 and the rotating cylinder 21 is 30° to 50°.

[0062] In some embodiments of this utility model, the multiple blades 22 of the oscillating blade device are all of the same shape and structure. Of course, the blades 22 can also have different shapes and structures, and the tilting directions of two adjacent blades 22 can be the same or opposite. The rotating cylinder 21 with blades 22, the blades 22, the first protrusion 23 and the second protrusion 24 can be integrally injection molded. The rotating cylinder 21 without blades 22, the first protrusion 23 and the second protrusion 24 can be integrally injection molded.

[0063] When the rotating drum 21 is not equipped with the swing blades 22, the variety of air supply can be increased, and the swing blade device can be easily installed on other structures of the air conditioner through the rotating drum 21, such as the rotating bracket 42 on the air conditioner. It can also prevent the swing blades 22 and the rotating bracket 42 from interfering with each other.

[0064] Figure 10 This is a schematic structural diagram of the indoor unit of an air conditioner according to an embodiment of the present invention; as shown below. Figure 10As shown, this embodiment of the present invention also provides an air conditioner, which includes a housing 40, a drive device, and a louver device as described in any of the above embodiments. An air outlet 41 is provided on the housing 40. The louver device is located at the air outlet 41. The drive device is located inside the housing and configured to drive a rotating drum 21 to rotate forward and / or in the reverse direction around a spindle 30.

[0065] Specifically, the air conditioner may include an indoor unit, which may have the aforementioned housing 40, drive unit, and louver device as described in any of the above embodiments. The air outlet 41 may extend horizontally. Further, the indoor unit is preferably a wall-mounted unit, window unit, ducted unit, or ceiling unit.

[0066] In some other embodiments of this utility model, the indoor unit can be a vertical air conditioner indoor unit, the air outlet 41 can be vertically set, the core shaft 30 can also be vertically set, and the swivel device is vertically set at the air outlet 41.

[0067] In some other embodiments of this utility model, a cross-flow fan, a heat exchanger, and an air duct formed by an air conditioning frame are provided inside the housing 40. The air duct includes an inlet air duct and an outlet air duct. The cross-flow fan is disposed between the inlet air duct and the outlet air duct. Through the rotational force of the cross-flow fan, indoor air can be drawn from the air inlet into the housing 40. The indoor airflow flows sequentially through the inlet air duct, the cross-flow fan, and the outlet air duct, and exchanges heat with the heat exchanger. Afterward, the air is blown back into the indoor environment from the air outlet 41 of the air conditioner under the action of the oscillating blade device. The oscillating blades 22 in the oscillating blade device can move to multiple positions, such as... Figures 11 to 13 As shown, the multi-blade 22 rotates synchronously or staggeredly to achieve the effects of swinging wind and oscillating natural wind.

[0068] In some embodiments of this utility model, the driving device is a motor or other component installed inside the air conditioner. The motor shaft can drive a rotating drum 21 to rotate synchronously through gears or other transmission components. Optionally, the motor is a bidirectional motor type, which can drive the corresponding rotating drum 21 to rotate clockwise or counterclockwise, that is, to rotate in the forward or reverse direction.

[0069] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A swing leaf device for an air conditioner, characterized by, The device comprises a core shaft, a plurality of rotating drums; The rotating drums are sleeved on the core shaft, and the rotating drums are connected in sequence along the axial direction of the core shaft; part or all of the rotating drums are provided with flaps; One end of one of the rotating drums is provided with a plurality of grooves, and the grooves are arranged in sequence along the circumferential direction of the rotating drum; The corresponding end of the other rotating drum is provided with a plurality of first protrusions, each first protrusion is inserted into a groove, and each first protrusion and the corresponding groove have a rotation gap in the circumferential direction of the rotating drum, so that the two rotating drums can rotate relative to each other.

2. The flap device according to claim 1, wherein The central angle corresponding to each rotation gap is between 1 / 360 degrees and 1 / 3 degrees.

3. The flap device according to claim 2, wherein The central angle corresponding to each rotation gap is between 1 / 13 degrees and 1 / 4 degrees.

4. The flap device according to claim 1, wherein The ratio between the length of the first protrusion extending in the axial direction of the core shaft and the circumference of the outer peripheral wall of the rotating drum is 1 / 20 to 1 / 2; The ratio between the length of the first protrusion extending in the axial direction of the core shaft and the length of the groove extending in the axial direction of the core shaft is 9 / 10 to 11 / 10.

5. The flap device according to claim 4, wherein The ratio between the length of the first protrusion extending in the axial direction of the core shaft and the circumference of the outer peripheral wall of the rotating drum is 1 / 8 to 1 / 3.

6. The flap device according to claim 1, wherein Two opposite sides of each groove are respectively a first side and a second side; the first side and / or the second side is provided with a slot, and the corresponding first protrusion is provided with an insertion block or an insertion piece inserted into the slot; or Two opposite sides of each first protrusion are respectively a third side and a fourth side; the third side and / or the fourth side is provided with a slot, and the side of the corresponding groove is provided with an insertion block or an insertion piece inserted into the slot.

7. The flap device according to claim 1, wherein One end of one of the rotating drums is provided with a plurality of second protrusions, and the second protrusions define the grooves.

8. The flap device according to claim 7, wherein The outer peripheral wall of the first protrusion and the outer peripheral wall of the corresponding rotating drum are on the same arc surface, and the outer peripheral wall of the second protrusion and the outer peripheral wall of the corresponding rotating drum are on the same arc surface; The inner peripheral wall of the first protrusion and the inner peripheral wall of the corresponding rotating drum are on the same arc surface, and the inner peripheral wall of the second protrusion and the inner peripheral wall of the corresponding rotating drum are on the same arc surface; The central angle corresponding to the outer peripheral wall of the first protrusion on the same rotating drum is not equal to or equal to the central angle corresponding to the outer peripheral wall of another first protrusion.

9. The flap device according to claim 7, wherein Two grooves are symmetrically arranged at one end of each of the two adjacent and connected rotating cylinders; Each of the swing leaves is plate-shaped and is arranged obliquely relative to the corresponding rotating cylinder, and the rotating cylinder passes through the center of the corresponding swing leaf; On the rotating cylinder with the first protrusions and the second protrusions, the overall structure formed by the first protrusions is the same as the overall structure formed by the second protrusions; The sum of the central angle corresponding to the first protrusions, the central angle corresponding to the second protrusions, and the central angle corresponding to the rotating gap is 360 degrees.

10. An air conditioner characterized by comprising: Comprise: A shell, wherein an air outlet is arranged on the shell; The swing leaf device according to any one of claims 1 to 9 is arranged at the air outlet; A driving device is arranged in the shell and is configured to drive one of the rotating cylinders to rotate forward and / or reversely around the core shaft.

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