Air conditioner indoor unit

Abstract

The present invention belongs to the technical field of air conditioners, and particularly relates to an indoor unit of an air conditioner. The present invention aims to solve the problem that a large part of the noise generated by the existing indoor unit of an air conditioner can still be transmitted into the room through the air outlet, which greatly limits the noise reduction effect of the existing indoor unit of an air conditioner. In the present invention, a noise collector and an anti-noise generator are provided on the indoor unit body, and the signal input end of the computer board in the indoor unit body is communicatively connected to the noise collector, and the signal output end of the computer board is communicatively connected to the anti-noise generator. Thus, the indoor unit of the air conditioner can generate anti-noise data according to the noise data received by the noise collector and emit a sound wave with the same frequency as the noise but with a phase difference of half a cycle by the anti-noise generator to weaken or cancel the noise generated by the indoor unit body. At the same time, the anti-noise generator is arranged such that its sound-emitting port is on the same side as the air outlet of the indoor unit body, which more reliably ensures the noise reduction effect of the indoor unit of the air conditioner.

Description

Technical Field

[0001] The present invention belongs to the technical field of air conditioners, and particularly relates to an indoor unit of an air conditioner. Background Art

[0002] During the operation of the indoor unit of an air conditioner, noises are generated by the rotation of the fan and the swing of the swing blade, etc. If this noise cannot be effectively controlled, it will greatly affect people's normal rest, especially at night.

[0003] The existing indoor unit of an air conditioner generally uses sound-absorbing materials by itself to absorb the generated noise. However, a large part of the noise generated by the indoor unit of an air conditioner can still be transmitted into the room through the air outlet, so that the noise reduction effect of the existing indoor unit of an air conditioner is greatly limited.

[0004] Correspondingly, there is a need in the art for a new indoor unit of an air conditioner to solve the above problems. Summary of the Invention

[0005] In order to solve the above problems in the prior art, that is, to solve the problem that a large part of the noise generated by the existing indoor unit of an air conditioner can still be transmitted into the room through the air outlet, so that the noise reduction effect of the existing indoor unit of an air conditioner is greatly limited, the present invention provides an indoor unit of an air conditioner.

[0006] In an indoor unit of an air conditioner provided by the present invention, it includes an indoor unit body, a noise collector and an anti-noise generator provided on the indoor unit body; the indoor unit body includes an air outlet provided on its outer side and a computer board provided inside it; the signal input end of the computer board is communicatively connected to the noise collector, and the signal output end of the computer board is communicatively connected to the anti-noise generator; the outer surface of the noise collector is provided with sound collection holes; the outer surface of the anti-noise generator is provided with sound emission ports, and the anti-noise generator is arranged such that its sound emission ports are on the same side as the air outlet.

[0007] As a preferred technical solution of the above indoor unit of an air conditioner provided by the present invention, a swing wind component is provided inside the indoor unit body, and the swing wind component includes a swing blade and a motor; the motor drives the swing blade to swing through a first transmission component, and the motor also drives the anti-noise generator to swing synchronously with the swing blade through a second transmission component.

[0008] As a preferred technical solution of the above-mentioned indoor unit of the air conditioner provided by the present invention, the indoor unit body is a floor-standing type; the first transmission component includes a first rotating shaft and a first sub-gear coaxially connected to the first rotating shaft; the swing blade is connected to the first rotating shaft and parallel to the first rotating shaft; the second transmission component includes a second rotating shaft and a second sub-gear coaxially connected to the second rotating shaft; the anti-noise generator is connected to the second rotating shaft; the first rotating shaft and the second rotating shaft are parallel and both are rotatably arranged on the indoor unit body; a main gear is coaxially sleeved on the output shaft of the motor, one side of the main gear meshes with the first sub-gear and the other side meshes with the second sub-gear.

[0009] As a preferred technical solution of the above-mentioned indoor unit of the air conditioner provided by the present invention, a plurality of the swing blades are arranged at circumferential intervals around the first rotating shaft to form a fan.

[0010] As a preferred technical solution of the above-mentioned indoor unit of the air conditioner provided by the present invention, a plurality of the fans are arranged at axial intervals along the first rotating shaft.

[0011] As a preferred technical solution of the above-mentioned indoor unit of the air conditioner provided by the present invention, the noise collector is arranged at the upper end of the indoor unit body; a plurality of the sound collection holes are arranged on the outer surface of the noise collector along both the axial direction and the circumferential direction of the indoor unit body.

[0012] As a preferred technical solution of the above-mentioned indoor unit of the air conditioner provided by the present invention, the indoor unit body is cylindrical, and both the noise collector and the anti-noise generator are disc-shaped and matched with the indoor unit body.

[0013] As a preferred technical solution of the above-mentioned indoor unit of the air conditioner provided by the present invention, the indoor unit body is a wall-mounted type; the noise collector and the anti-noise generator are respectively connected to the same side of the indoor unit body; the first transmission component includes a first swing rod and a first connecting column vertically and hinged to one end of the first swing rod; a plurality of the swing blades are all hinged to the first swing rod, and both ends of the plurality of the swing blades are respectively rotated in the housing of the indoor unit body through coaxially connected first rotating rods; the second transmission component includes a second swing rod and a second connecting column vertically and hinged to one end of the second swing rod; the anti-noise generator is hinged to the second swing rod, and the anti-noise generator is also rotatably connected to the housing of the indoor unit body through a second rotating rod; a turntable is coaxially sleeved on the output shaft of the motor, and the first connecting column and the second connecting column are respectively connected to the outer ends on both sides of the turntable and are both parallel to the axis of the turntable.

[0014] As a preferred technical solution of the indoor unit of the air conditioner provided by the present invention, the noise collector includes at least one microphone; and / or, the anti-noise generator includes at least one speaker.

[0015] As a preferred technical solution of the indoor unit of the air conditioner provided by the present invention, the circuit board includes a memory and a processor; the memory is electrically connected to the processor; the memory stores a plurality of pre-collected noise data and anti-noise data in a mapping relationship therewith; the signal input terminal and the signal output terminal are provided on the processor.

[0016] In an indoor unit of an air conditioner provided by the present invention, a noise collector and an anti-noise generator are provided on the indoor unit body, and the signal input terminal of the circuit board in the indoor unit body is communicatively connected to the noise collector, and the signal output terminal of the circuit board is communicatively connected to the anti-noise generator. In this way, the indoor unit of the air conditioner can generate anti-noise data according to the noise data received by the noise collector and emit sound waves with the same frequency as the noise but a phase difference of half a cycle by the anti-noise generator to weaken or cancel the noise generated by the indoor unit body. At the same time, since most of the noise generated by the indoor unit body is transmitted through the air outlet, and the anti-noise generator is arranged such that its sound emitting port is on the same side as the air outlet of the indoor unit body, the noise reduction effect of the indoor unit of the air conditioner is more reliably ensured.

[0017] In addition, in an indoor unit of an air conditioner provided by the present invention, while the motor drives the swing blade to swing through the first transmission member, it also drives the anti-noise generator to swing synchronously with the swing blade through the second transmission member. In this way, the sound emitting port of the anti-noise generator can be synchronously changed along with the change of the swing direction of the swing blade, and the sound emitting port is always directed towards the air outlet direction of the indoor unit body. At the same time, the anti-noise generator and the swing blade are driven by the same motor. On the one hand, the utilization rate of the motor is improved and the cost is saved. On the other hand, it can accurately ensure that the swing directions of the swing blade and the anti-noise generator are always the same, and the noise reduction effect of the indoor unit of the air conditioner is further improved. Description of the Drawings

[0018] The indoor unit of the air conditioner of the present invention will be described below with reference to the drawings in combination with the cabinet-type air conditioner indoor unit and the wall-mounted air conditioner indoor unit. In the drawings:

[0019] Figure 1 is a schematic external structure diagram of the cabinet-type air conditioner indoor unit of this embodiment;

[0020] Figure 2 is a schematic internal structure diagram of the cabinet-type air conditioner indoor unit of this embodiment;

[0021] Figure 3 is a schematic structure diagram of the wall-mounted air conditioner indoor unit of this embodiment;

[0022] Figure 4 It is a schematic structural diagram of the communication connection between components in the indoor unit of the air conditioner according to this embodiment.

[0023] List of Reference Numerals

[0024] 1 - Indoor unit body; 11 - Air outlet; 12 - Computer board; 121 - Memory; 122 - Processor;

[0025] 2 - Noise collector; 21 - Sound receiving hole;

[0026] 3 - Anti - noise generator; 31 - Sound generating port; 32 - Second rotating shaft; 33 - Second sub - gear;

[0027] 4 - Fan; 41 - Motor; 42 - Main gear; 43 - First rotating shaft; 44 - First sub - gear; 45 - Swing blade;

[0028] 51 - First swing rod; 52 - First rotating rod. Detailed implementation manners

[0029] The following describes the preferred implementation manners of the present invention with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0030] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] To solve the problem that a large part of the noise generated by the existing air conditioner indoor unit can still be transmitted into the room through the air outlet, which greatly limits the noise reduction effect of the existing air conditioner indoor unit, this embodiment provides an air conditioner indoor unit.

[0033] As Figures 1 to 3 shown, in an air conditioner indoor unit provided in this embodiment, the air conditioner indoor unit includes an indoor unit body 1, a noise collector 2, and an anti-noise generator 3 provided on the indoor unit body 1. The indoor unit body 1 includes an air outlet 11 provided on its outer side and a motherboard 12 provided inside it; the signal input end of the motherboard 12 is communicatively connected to the noise collector 2, and the signal output end of the motherboard 12 is communicatively connected to the anti-noise generator 3; a sound collection hole 21 is provided on the outer surface of the noise collector 2; a sound emission port 31 is provided on the outer surface of the anti-noise generator 3, and the anti-noise generator 3 is arranged such that its sound emission port 31 is on the same side as the air outlet 11.

[0034] Exemplarily, although Figure 1 and 2 take the cabinet-type air conditioner indoor unit as an example, Figure 3 take the wall-mounted air conditioner indoor unit as an example to illustrate the indoor unit body of this embodiment and the air conditioner indoor unit, the type of the air conditioner indoor unit in this embodiment is not limited to this. Under the condition of not deviating from the principle of the present invention, those skilled in the art can adjust the type of the air conditioner indoor unit in this embodiment according to needs to adapt to specific application scenarios. It can be understood that as long as the above technical means of this embodiment are used to achieve the noise reduction function of the air conditioner indoor unit, it belongs to the scope of the air conditioner indoor unit described in this embodiment and the air conditioner indoor unit claimed by the present invention.

[0035] It can be understood that the air conditioner indoor unit of this embodiment is a transformation based on the existing air conditioner indoor unit. Therefore, the indoor unit body 1 in this embodiment generally refers to all existing air conditioner indoor units that do not use the above technical means to achieve the noise reduction function of the air conditioner indoor unit. Among them, in addition to the cabinet type and wall-mounted type mentioned above, the indoor unit body 1 can also be a ceiling-mounted type, an embedded type, etc.

[0036] Among them, the noise collector 2 includes at least one microphone, that is, the noise collector 2 can collect the indoor noise through one microphone; and the noise collector 2 can also be provided with multiple noise collectors 2 to respectively detect the noise in different directions, so as to make the noise collection effect better. In addition, the anti-noise generator 3 includes at least one speaker, that is, the anti-noise generator 3 can be provided with only one speaker, or can be provided with speakers facing multiple directions to respectively play an effective role in eliminating the noise in different directions.

[0037] As shown Figure 4 in FIG. Figure 4 , the computer board 12 in the indoor unit of the air conditioner includes a memory 121 and a processor 122; the memory 121 is electrically connected to the processor 122; the memory 121 stores a plurality of pre-collected noise data and anti-noise data in a mapping relationship therewith; the processor 122 is provided with a signal input end and a signal output end. Since the noise generated by the air conditioner has one or more inherent frequencies or frequency ranges, in the above mapping relationship, the sound waves of the noise and the anti-noise can both be represented by sine waves, and the frequencies of each noise data and its corresponding anti-noise data are the same while the phases differ by half a cycle. Thus, the sound waves of the noise and the anti-noise have the same frequency. When the peak of the noise sound wave is superimposed on the trough of the anti-noise sound wave, a sound wave with a very small amplitude will be formed to achieve the effect of noise reduction.

[0038] Among them, the memory 121 includes but is not limited to random access memory, flash memory, read-only memory, programmable read-only memory, volatile memory, non-volatile memory, serial memory, parallel memory, or registers, etc., and the processor 122 includes but is not limited to CPLD / FPGA, DSP, ARM processor, MIPS processor, etc.

[0039] In an indoor unit of an air conditioner provided in this embodiment, a noise collector 2 and an anti-noise generator 3 are provided on the indoor unit body 1, and the signal input end of the computer board 12 in the indoor unit body 1 is communicatively connected to the noise collector 2, and the signal output end of the computer board 12 is communicatively connected to the anti-noise generator 3. Thus, the indoor unit of the air conditioner can generate anti-noise data according to the noise data received by the noise collector 2 and emit a sound wave with the same frequency as the noise and a phase difference of half a cycle by the anti-noise generator 3 to weaken or cancel the noise generated by the indoor unit body 1. At the same time, since most of the noise generated by the indoor unit body 1 propagates into the room through the air outlet 11, and the sound emitting port 31 of the anti-noise generator 3 is arranged on the same side as the air outlet 11 of the indoor unit body 1, the noise reduction effect of the indoor unit of the air conditioner is more reliably ensured.

[0040] As a preferred implementation manner of the above indoor unit of the air conditioner provided in this embodiment, as shown Figures 1 to 3 in FIG. Figures 1 to 3 , a swing component is arranged inside the indoor unit body 1. The swing component includes swing blades 45 (such as Figure 2 in FIG. Figure 2 , the fan 4 is composed of a plurality of swing blades 45, or as shown Figure 3 in FIG. Figure 3 , a plurality of swing blades 45 hinged on a common first swing rod 51) and a motor 41; the motor 41 drives the swing blades 45 to swing through a first transmission component (such as Figure 2 in FIG. Figure 2 , including a first rotating shaft 43 and a first sub-gear 44, or Figure 3 in FIG. Figure 3 , including a first swing rod 51 and a first connecting column not shown), and the motor 41 also passes through a second transmission component (such asFigure 2 the second rotating shaft 32 and the second auxiliary gear 33 therein, or the second swing rod and the second connecting column (not shown in Figure 3 ) drive the anti-noise generator 3 to swing synchronously with the swing blade 45.

[0041] Thus, in an indoor unit of an air conditioner provided in this embodiment, while the motor 41 drives the swing blade 45 to swing through the first transmission component, it also drives the anti-noise generator 3 to swing synchronously with the swing blade 45 through the second transmission component. In this way, the sound-emitting port 31 of the anti-noise generator 3 can be synchronously changed as the swinging direction of the swing blade 45 changes, and the sound-emitting port 31 is always oriented towards the air outlet direction of the indoor unit body 1. At the same time, the anti-noise generator 3 and the swing blade 45 are driven by the same motor 41. On the one hand, the utilization rate of the motor 41 is improved and the cost is saved. On the other hand, it can accurately ensure that the swinging directions of the swing blade 45 and the anti-noise generator 3 are always the same, and further improve the noise reduction effect of the indoor unit of this air conditioner.

[0042] As a preferred implementation manner of the above indoor unit of the air conditioner provided in this embodiment, as shown in Figure 1 and Figure 2 , the indoor unit body 1 is a floor-standing type; in this floor-standing indoor unit of the air conditioner, the first transmission component includes a first rotating shaft 43 and a first auxiliary gear 44 coaxially connected to the first rotating shaft 43; the swing blade 45 is connected to the first rotating shaft 43 and is parallel to the first rotating shaft 43; the second transmission component includes a second rotating shaft 32 and a second auxiliary gear 33 coaxially connected to the second rotating shaft 32; the anti-noise generator 3 is connected to the second rotating shaft 32; the first rotating shaft 43 and the second rotating shaft 32 are parallel and are both rotatably arranged on the indoor unit body 1; a main gear 42 is coaxially sleeved on the output shaft of the motor 41, and one side of the main gear 42 meshes with the first auxiliary gear 44 and the other side meshes with the second auxiliary gear 33.

[0043] Exemplarily, during the operation of this floor-standing indoor unit of the air conditioner, when the output shaft of the motor 41 rotates, it simultaneously drives the first auxiliary gear 44 and the second auxiliary gear 33 to rotate in the same direction (i.e., both clockwise or both counterclockwise), so that the swing blade 45 and the anti-noise generator 3 swing synchronously and in the same direction. In this way, it is ensured that the sound waves emitted by the anti-noise generator 3 and the noise sound waves are basically along the air outlet direction of the indoor unit of the air conditioner, thus greatly ensuring the noise reduction effect of the indoor unit of the air conditioner.

[0044] As a preferred implementation manner of the above indoor unit of the air conditioner provided in this embodiment, as shown in Figure 1In the A-A sectional view, a plurality of swing blades 45 are circumferentially spaced around the first rotating shaft 43 to form a blade fan 4. The included angle formed between the outermost two swing blades 45 around the rotating shaft 43 in the blade fan 4 is adapted to the swing angle of the swing blade 45 and the width of the air outlet 11, that is, it can ensure that the number of swing blades 45 facing the air outlet 11 is basically equal during the reciprocating swing of the blade fan 4, so as to ensure the air swing effect of the indoor unit of the air conditioner.

[0045] As a preferred implementation manner of the above-mentioned indoor unit of the air conditioner provided in this embodiment, it should be noted that only one blade fan 4 can be provided on the first rotating shaft 43 of this embodiment. And in Figure 1 In the shown cabinet-type indoor unit of the air conditioner, the length of the air outlet 11 is along the vertical direction, so Figure 3 As shown, a plurality of blade fans 4 are axially spaced along the first rotating shaft 43, which can meet the air swing effect of the indoor unit of the air conditioner along the length direction of its air outlet 11. It can be understood that the radial length and the axial length of each swing blade 45 in the blade fan 4 can be adaptively set or adjusted according to the size of the cabinet-type indoor unit body 1 of the air conditioner and the requirements of the air swing intensity.

[0046] As a preferred implementation manner of the above-mentioned indoor unit of the air conditioner provided in this embodiment, in Figure 1 and Figure 2 In the cabinet-type indoor unit of the air conditioner, the noise collector 2 is arranged at the upper end of the indoor unit body 1 and can be fixedly arranged relative to the indoor unit body 1, while the anti-noise generator 3 is arranged between the noise collector 2 and the indoor unit body 1. At the same time, a plurality of sound collection holes 21 are arranged on the outer surface of the noise collector 2 along the axial and circumferential directions of the indoor unit body 1 to improve the collection effect of noises in all directions in the room.

[0047] As a preferred implementation manner of the above-mentioned indoor unit of the air conditioner provided in this embodiment, in Figure 1 and Figure 2 In the cabinet-type indoor unit of the air conditioner, the indoor unit body 1 is cylindrical. Correspondingly, the noise collector 2 and the anti-noise generator 3 are both disk-shaped and matched with the indoor unit body 1. In this way, it ensures the consistency of the overall external shape specifications of the indoor unit of the air conditioner, and fully exerts the noise collection function of the noise collector 2 and the noise generation function of the anti-noise generator 3 in the indoor unit of the air conditioner, and finally achieves the purpose of ensuring better noise reduction effect of the indoor unit of the air conditioner.

[0048] As a preferred implementation manner of the above-mentioned indoor unit of the air conditioner provided in this embodiment, as Figure 3 shown, the indoor unit body 1 is wall-mounted; among them, the noise collector 2 and the anti-noise generator 3 are respectively connected to the same side of the indoor unit body 1 (such as Figure 3At the right end of the indoor unit main body 1, the sound outlet 31 of the anti-noise generator 3 is located on the same side as the air outlet 11); the first transmission component includes a first swing rod 51 and a first connecting column (not shown in the figure) that is perpendicular to and hinged at one end of the first swing rod 51; a plurality of swing blades 45 are all hinged on the first swing rod 51, and both ends of the plurality of swing blades 45 are also rotated in the housing of the indoor unit main body 1 through coaxially connected first rotating rods 52 (such as Figure 3 in which the first rotating rod 52 can be set in the horizontal direction perpendicular to the paper surface from outside to inside); the second transmission component includes a second swing rod (not shown in the figure) and a second connecting column (not shown in the figure) that is perpendicular to and hinged at one end of the second swing rod; the anti-noise generator 3 is hinged on the second swing rod, and the anti-noise generator 3 is also rotatably connected in the housing of the indoor unit main body 1 through a second rotating rod (not shown in the figure) (such as Figure 3 in which the second rotating rod can be vertically arranged); a turntable (not shown in the figure) is coaxially sleeved on the output shaft of the motor 41, and the first connecting column and the second connecting column are respectively connected to the outer ends on both sides of the turntable and are both parallel to the axis of the turntable. Such a connection can make the swings of the first swing rod 51 and the second swing rod not interfere with each other.

[0049] It can be understood that in the wall-mounted air conditioner as shown in Figure 3 , when the output shaft of the motor 41 drives the turntable to rotate, the distances between the hinged parts of the first swing rod 51 and the swing blades 45 and between the hinged parts of the second swing rod and the anti-noise generator 3 and the output shaft of the motor 41 will change periodically. When the swing blades 45 swing around the first rotating rod 52, the noise generator swings around the second rotating rod at the same time, so that the noise generator swings synchronously with the swing blades 45 to ensure that the sound outlet 31 of the noise generator always faces the air outlet direction of the indoor unit main body 1 and ensure the noise reduction effect of the indoor unit of the air conditioner.

[0050] Of course, the above replaceable embodiments can be used in cross combination with each other, and between the replaceable embodiments and the preferred embodiments, so as to combine new embodiments to be applicable to more specific application scenarios.

[0051] In addition, those skilled in the art can understand that although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the protection scope of the present invention and forms different embodiments. For example, in the claims of the present invention, any one of the claimed embodiments can be used in any combination.

[0052] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An indoor unit of an air conditioner, characterized in that, It includes an indoor unit body, a noise collector and an anti-noise generator provided on the indoor unit body; The indoor unit body includes an air outlet provided on its outer side and a computer board provided inside it; the signal input end of the computer board is communicatively connected to the noise collector, and the signal output end of the computer board is communicatively connected to the anti-noise generator; The outer surface of the noise collector is provided with sound collection holes; the outer surface of the anti-noise generator is provided with a sound emission port, and the anti-noise generator is arranged such that its sound emission port is on the same side as the air outlet; A swing component is provided inside the indoor unit body, and the swing component includes swing blades and a motor; the motor drives the swing blades to swing through a first transmission component, and the motor also drives the anti-noise generator to swing synchronously with the swing blades through a second transmission component.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The indoor unit body is a floor-standing type; The first transmission component includes a first rotating shaft and a first sub-gear coaxially connected to the first rotating shaft; the swing blades are connected to the first rotating shaft and are parallel to the first rotating shaft; The second transmission component includes a second rotating shaft and a second sub-gear coaxially connected to the second rotating shaft; the anti-noise generator is connected to the second rotating shaft; The first rotating shaft and the second rotating shaft are parallel and are both rotatably provided on the indoor unit body; A main gear is coaxially sleeved on the output shaft of the motor, and one side of the main gear meshes with the first sub-gear and the other side meshes with the second sub-gear.

3. The indoor unit of an air conditioner according to claim 2, characterized in that, A plurality of the swing blades are arranged at circumferential intervals around the first rotating shaft and form a blade fan.

4. The indoor unit of the air conditioner according to claim 3, characterized in that, A plurality of the blade fans are arranged at axial intervals along the first rotating shaft.

5. The indoor unit of an air conditioner according to claim 2, characterized in that, The noise collector is provided at the upper end of the indoor unit body; A plurality of the sound collection holes are provided on the outer surface of the noise collector along the axial and circumferential directions of the indoor unit body.

6. The indoor unit of the air conditioner according to claim 2, characterized in that, The indoor unit body is cylindrical, and both the noise collector and the anti-noise generator are disc-shaped and match the indoor unit body.

7. The indoor unit of an air conditioner according to claim 1, characterized in that, The indoor unit body is a wall-mounted type; The noise collector and the anti-noise generator are respectively connected to the same side of the indoor unit body; The first transmission component includes a first swing rod and a first connecting column vertically and hinged to one end of the first swing rod; a plurality of the swing blades are all hinged to the first swing rod, and both ends of the plurality of the swing blades are respectively rotated in the housing of the indoor unit body through coaxially connected first rotating rods; The second transmission component includes a second swing rod and a second connecting column vertically and hinged to one end of the second swing rod; the anti-noise generator is hinged to the second swing rod, and the anti-noise generator is also rotationally connected to the housing of the indoor unit body through a second rotating rod; A turntable is coaxially sleeved on the output shaft of the motor, and the first connecting column and the second connecting column are respectively connected to the outer ends on both sides of the turntable and are both parallel to the axis of the turntable.

8. The indoor unit of the air conditioner according to claim 1, characterized in that, The noise collector includes at least one microphone; and / or, The anti-noise generator includes at least one speaker.

9. The indoor unit of an air conditioner according to claim 1, characterized in that, The computer board includes a memory and a processor; the memory is electrically connected to the processor; A plurality of pre-collected noise data and anti-noise data in a mapping relationship therewith are stored in the memory; The signal input end and the signal output end are arranged on the processor.

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