CN-122015200-A - Noise reduction device, air conditioner and noise reduction control method of air conditioner

CN122015200ACN 122015200 ACN122015200 ACN 122015200ACN-122015200-A

Abstract

The application relates to a noise reduction device, an air conditioner and a noise reduction control method thereof, relates to the technical field of air conditioning equipment, and aims to improve the noise reduction effect of an air conditioner outdoor unit. The noise reduction device comprises a noise reduction shell and a moving assembly. The noise reduction shell is provided with at least two resonant cavities which are distributed at intervals along a first direction, and a radial pipe structure is arranged in each resonant cavity. The height dimension of at least two resonant cavities in the second direction is sequentially increased, and an included angle is formed between the first direction and the second direction. The moving component is at least partially arranged in the resonant cavity and is used for adjusting the resonant frequency of the resonant cavity.

Inventors

YANG CHUNSHENG
GAO ZHIQIANG
CHENG SHI
WU HAO
YANG YONGBO
CHEN ZHIWEI

Assignees

珠海格力电器股份有限公司

Dates

Publication Date: 20260512
Application Date: 20251231

Claims (11)

1. A noise reduction device, comprising: The noise reduction machine shell is provided with at least two resonant cavities which are distributed at intervals along a first direction, and each resonant cavity is internally provided with a radial pipe structure; and the moving assembly is at least partially arranged in the resonant cavity and is used for adjusting the resonant frequency of the resonant cavity.
2. The noise reducer of claim 1, wherein the noise reducer housing comprises: At least two diameter tube plates, one diameter tube plate is arranged in one resonant cavity, the side plates of the resonant cavity on the same side are arranged at intervals with the diameter tube plates along the first direction, and a diameter tube structure is formed, and the length dimension of the diameter tube structure is arranged along the second direction.
3. The noise reducer of claim 2, wherein the moving assembly comprises: The positioning piece is positioned at one side of the noise reduction shell along the second direction; The noise reduction shell is provided with strip-shaped holes communicated with the resonant cavities, one end of one extension plate is inserted into one resonant cavity through the strip-shaped holes, the extension plate is contacted with the radial tube plate along the first direction, and the other end of the extension plate is connected with the positioning piece; the driving piece is connected with the positioning piece and used for driving the positioning piece and the extension plate to move along a third direction, and included angles are formed among the third direction, the second direction and the first direction.
4. A noise reducer according to claim 3, wherein the driving member comprises: The driving motor is connected with the noise reduction shell; the driving gear is arranged at the output end of the driving motor; And the driving rack is arranged along the third direction and connected with the positioning piece, and the driving rack is meshed with the driving gear.
5. A noise reducer according to claim 3, characterized in that it comprises: at least two inhale the sound cotton, one inhale the sound cotton is set up in the resonant cavity, inhale the sound cotton with the footpath tube sheet is located along the third direction resonant cavity's both ends.
6. The noise reducer of any one of claims 1-5, wherein the noise reducer housing comprises: a first side plate; the second side plate is vertically connected with the first side plate; the two third side plates are sequentially connected with the opposite ends of the first side plate and the second side plate along the third direction; the partition plates are distributed at intervals with the first side plates along the first direction; The first side plate, the second side plate, the two third side plates and the partition plate are connected with the arc-shaped plate so as to enclose at least two resonant cavities; The dimension of the first side plate and the dimension of the partition plate along the second direction are the height dimension of the resonant cavity, and the third direction, the second direction and the first direction are mutually provided with included angles.
7. An air conditioner, comprising: the noise reducer of any one of claims 1-6; The outdoor unit comprises a shell, an outdoor fan and an air guide ring, wherein the shell is provided with an air outlet, the outdoor fan is positioned in the shell and faces the air outlet, the air guide ring is positioned at the inner side of the air outlet and connected with the shell, the air guide ring is radially away from the outer side of the air outlet, and the noise reduction device is connected to the inner side of the shell.
8. The air conditioner of claim 7, wherein the number of the noise reducing devices is plural, and the noise reducing devices are distributed at intervals along the circumferential direction of the air guide ring.
9. The air conditioner according to claim 7, the air conditioner is characterized by further comprising: the microphone is arranged in the shell and is used for detecting noise intensity; And the microphone, the outdoor fan and the moving assembly are electrically connected with the control module.
10. A noise reduction control method of an air conditioner for controlling the air conditioner according to claims 7 to 9, characterized by comprising: acquiring the current rotating speed of the outdoor fan and the predicted rotating speed after the preset time; judging whether the preset rotating speed is changed or not according to the current rotating speed; if the predicted rotating speed is the same as the current rotating speed, controlling a moving component of the noise reduction device to keep the current position; And if the predicted rotating speed is different from the current rotating speed, calculating a first position parameter of the moving assembly according to the predicted rotating speed and the running parameter, and controlling the moving assembly to move to a position corresponding to the first position parameter.
11. The noise reduction control method of an air conditioner according to claim 10, wherein after said controlling the moving assembly to move to a position corresponding to the first position parameter, the noise reduction control method comprises: Acquiring noise parameters in the shell; acquiring noise frequency corresponding to the noise intensity greater than a threshold value in the noise parameters; Acquiring a second position parameter of the mobile component according to the noise frequency and the operation parameter; and controlling the moving assembly to move to a position corresponding to the second position parameter.

Description

Noise reduction device, air conditioner and noise reduction control method of air conditioner Technical Field The present application relates to the field of air conditioning apparatuses, and in particular, to a noise reduction device, an air conditioner, and a noise reduction control method thereof. Background With the miniaturization and light weight development of the outdoor unit of the air conditioner, the noise problem of the outdoor unit is more remarkable due to the improvement of the diameters of the fan blades and the rotating speed of the fan. In the fan cavity of the outdoor unit, due to the fact that noise components are complex, sound quality performance is poor, and the peak frequency of rotary noise presents dynamic change characteristics under different operation rotating speeds, the noise frequency range of the outdoor unit is difficult to effectively solve and cover by the traditional scheme. Disclosure of Invention The application provides a noise reduction device, an air conditioner and a noise reduction control method thereof, and aims to improve the noise reduction effect of an air conditioner outdoor unit. In a first aspect, an embodiment of the present application provides a noise reduction apparatus including a noise reduction housing and a moving assembly. The noise reduction shell is provided with at least two resonant cavities which are distributed at intervals along a first direction, and a radial pipe structure is arranged in each resonant cavity. The height dimension of at least two resonant cavities in the second direction is sequentially increased, and an included angle is formed between the first direction and the second direction. The moving component is at least partially arranged in the resonant cavity and is used for adjusting the resonant frequency of the resonant cavity. In some embodiments, the noise reduction enclosure includes at least two diameter tube sheets, one diameter tube sheet is disposed in one of the resonant cavities, and along a first direction, side plates of the resonant cavity on the same side are disposed at intervals from the diameter tube sheet and form a diameter tube structure. The length dimension of the radial pipe structure is set along the second direction. In some embodiments, the movement assembly includes a positioning member, at least two extension plates, and a driving member. The locating piece is located at one side of the noise reduction shell along the second direction. The noise reduction shell is provided with a strip-shaped hole communicated with the resonant cavity, one end of an extension plate is inserted into the resonant cavity through the strip-shaped hole, the extension plate contacts the radial tube plate along the first direction, and the other end of the extension plate is connected with the positioning piece. The driving piece is connected with the locating piece and is used for driving the locating piece and the extension plate to move along a third direction. The third direction, the second direction and the first direction are mutually provided with included angles. In some embodiments, the drive member includes a drive motor, a drive gear, and a drive rack. The driving motor is connected with the noise reduction shell. The driving gear is arranged at the output end of the driving motor. The driving rack is arranged along the third direction and connected with the positioning piece, and is meshed with the driving gear. In some embodiments, the noise reduction device comprises at least two sound absorbing cottons, one sound absorbing cottons are arranged in one resonant cavity, and the sound absorbing cottons and the radial tube plates are positioned at two ends of the resonant cavity along a third direction. In some embodiments, the noise reduction housing includes a first side plate, a second side plate, two third side plates, a partition plate, and a fourth side plate. The second side plate is vertically connected with the first side plate. Along the third direction, opposite ends of the first side plate and the second side plate are sequentially connected with a third side plate. The partition plates are distributed at intervals along the first direction and the first side plates. The fourth curb plate is the arc, and first curb plate, second curb plate, two third curb plates and baffle are connected with the arc and are set up to enclose into two at least resonant cavities. The dimension of the first side plate and the dimension of the partition plate along the second direction are the height dimension of the resonant cavity, and the third direction, the second direction and the first direction are mutually provided with included angles. In a second aspect, an embodiment of the present application provides an air conditioner, which is characterized by including a noise reduction device in the first aspect and an outdoor unit, where the outdoor unit includes a casing, an outdoor fan and a wind guiding ring, the