CN216557624U - Active noise reduction structure of air conditioner, indoor unit fan system, indoor unit and air conditioner - Google Patents
Active noise reduction structure of air conditioner, indoor unit fan system, indoor unit and air conditioner Download PDFInfo
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- CN216557624U CN216557624U CN202220056405.7U CN202220056405U CN216557624U CN 216557624 U CN216557624 U CN 216557624U CN 202220056405 U CN202220056405 U CN 202220056405U CN 216557624 U CN216557624 U CN 216557624U
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Abstract
The utility model provides an active noise reduction structure of an air conditioner, an internal machine fan system, an internal machine and the air conditioner, wherein the active noise reduction structure comprises a sound collector, a DSP processing module, a main control module and a loudspeaker which are sequentially in communication connection, the air conditioner comprises an internal machine shell, and at least one group of the sound collector and the loudspeaker are arranged in the internal machine shell. The air conditioner active noise reduction structure, the indoor unit fan system, the indoor unit and the air conditioner can take an active noise reduction technology as a breakthrough, effectively reduce noise value on the basis of ensuring the running performance of the air conditioner, and improve tone quality experience.
Description
Technical Field
The utility model relates to the technical field of air conditioning, in particular to an active noise reduction structure of an air conditioner, an indoor unit fan system, an indoor unit and the air conditioner.
Background
At present, the control requirement of consumers on the noise of the indoor air conditioner is higher and higher, and the requirement on the noise value gradually develops towards the direction of sound quality experience. Although the air conditioners circulating in the market generally advertise low noise, the technical noise reduction is basically performed by passive means, including volume control of a noise source or a manner of isolating or weakening a transmission path.
In the prior art, the noise of the air conditioner internal unit mainly comprises wind noise of a fan system, flowing noise of a refrigerant, vibration transfer noise of a motor and high-frequency electromagnetic noise of a controller, and volume control of the noise sources can influence the operation performance of the air conditioner. Taking the indoor fan noise as an example, the indoor fan noise mainly originates from an indoor fan system formed by combining parts such as fan blades, an air duct, a motor and the like, and after years of technical development, the passive noise reduction technology has very great technical difficulty in further reducing the noise value on the premise of ensuring the same air volume and has little effect.
SUMMERY OF THE UTILITY MODEL
In view of the above, the technical problems to be solved by the present invention are: the first aspect is to provide an active noise reduction structure for an air conditioner, which can use an active noise reduction technology as a breakthrough, effectively reduce noise value and improve tone quality experience on the basis of ensuring the operation performance of the air conditioner.
In order to solve the technical problem of the first aspect, the utility model provides an active noise reduction structure of an air conditioner, which comprises a sound collector, a DSP processing module, a main control module and a loudspeaker which are sequentially in communication connection, wherein the air conditioner comprises an inner machine shell, and at least one group of the sound collector and the loudspeaker is arranged in the inner machine shell.
The active noise reduction structure of the air conditioner can take an active noise reduction technology as a breakthrough, effectively reduce the noise value from the noise source of the indoor unit of the air conditioner on the basis of ensuring the operation performance of the air conditioner, and improve the tone quality experience.
Preferably, an inner fan system is arranged inside the inner fan housing, the inner fan system comprises an air outlet located inside the inner fan housing, and at least one group of loudspeakers is arranged on two sides of the air outlet.
The method is favorable for superposition of the reverse audio waveform emitted by the loudspeaker and the air duct sound field of the indoor air noise, and further favorable for improving the directional noise reduction effect on the indoor air noise from the air conditioner indoor air noise source.
Preferably, at least one group of sound collectors is arranged inside the inner machine shell and arranged on the opposite side of the loudspeaker along the air outlet direction of the air outlet.
The better audio signal for the noise of the indoor unit can be effectively collected and identified from the noise source of the indoor unit of the air conditioner, and further can be eliminated or reduced in a more targeted manner.
Preferably, the inner machine casing is assembled by a bottom casing, a middle frame and a panel, and at least one group of loudspeakers is fixedly arranged on the bottom casing.
The directional noise reduction of the air conditioner active noise reduction structure on the noise source head of the air conditioner indoor unit aiming at the wind noise of the indoor unit can be fully realized, and the physical layout of the air conditioner active noise reduction structure can be properly simplified.
Preferably, at least one group of sound collectors is fixedly attached to the panel inside the inner machine casing.
Starting from another angle level based on more targeted collection of noise signals, the active noise reduction structure of the air conditioner is further realized on a noise source of the air conditioner, namely, the directional noise reduction of the air noise of the air conditioner is realized, and the physical layout of the active noise reduction structure of the air conditioner is favorably simplified properly.
Preferably, the DSP processing module and the main control module are integrally disposed on one PCB, or are distributed according to two independent PCBs.
The convenience and the adaptability of the active noise reduction structure of the air conditioner on the structural layout are improved.
Preferably, the loudspeaker comprises an FIR filter unit.
The phase-frequency response adjustment of the loudspeaker is realized by utilizing the linear phase characteristics of the FIR filter unit, so that the output quality of the reverse audio waveform of the loudspeaker is improved.
The technical problems to be solved by the utility model are as follows: the second aspect provides an indoor unit fan system, and/or the third aspect provides an indoor unit, and/or the fourth aspect provides an air conditioner, can regard as the breach as the technique of making an uproar actively falling, on the basis of guaranteeing air conditioner operating performance, effectively reduce the noise value to improve tone quality and experience.
In order to solve the technical problem of the second aspect, the utility model provides an internal fan system, which has the active noise reduction structure of the air conditioner in any embodiment of the first aspect.
In order to solve the technical problem of the third aspect, the utility model provides an indoor unit, which has the active noise reduction structure of the air conditioner in any embodiment of the first aspect.
In order to solve the technical problem of the fourth aspect, the present invention provides an air conditioner, which has the active noise reduction structure of the air conditioner according to any embodiment of the first aspect.
Compared with the prior art, the air conditioner active noise reduction structure, the indoor unit fan system, the indoor unit and the air conditioner have the following beneficial effects:
1) the active noise reduction technology can be used as a breakthrough, so that on the basis of ensuring the operation performance of the air conditioner, the noise value is effectively reduced from a noise source of an air conditioner internal unit, and the tone quality experience is improved;
2) on the premise of ensuring the same air volume, the directional noise reduction aiming at the air noise of the indoor unit of the air conditioner is realized on a noise source head of the indoor unit of the air conditioner, and the effect is good.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model, illustrate embodiments of the utility model and together with the description serve to explain the utility model and are not to limit the utility model. In the drawings:
fig. 1 is a schematic plan layout view of an active noise reduction structure of an air conditioner according to embodiment 1 of the present invention;
fig. 2 is a schematic view of an active noise reduction principle of an active noise reduction structure of an air conditioner according to embodiment 1 of the present invention;
fig. 3 is a schematic perspective layout structure of a sound collector in embodiment 1 of the present invention;
fig. 4 is a schematic perspective layout structure of a speaker according to embodiment 1 of the present invention.
Description of reference numerals:
1-inner machine shell, 11-bottom shell, 12-panel, 2-air outlet, 3-loudspeaker, 4-sound collector, 5-main control module.
Detailed Description
In order to make the aforementioned objects, technical solutions and advantages of the present invention more comprehensible, the present invention is described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only some of the embodiments constituting the present invention, and are not intended to limit the present invention, and the embodiments and features of the embodiments may be combined with each other without conflict.
Example 1
Referring to fig. 1-4, the utility model provides an active noise reduction structure of an air conditioner, which comprises a sound collector 4, a DSP processing module, a main control module 5 and a speaker 3, which are sequentially in communication connection, wherein the air conditioner comprises an internal machine shell 1, and at least one group of the sound collector 4 and the speaker 3 is arranged in the internal machine shell 1.
Specifically, as described in the background art, the noise of the air conditioner internal unit mainly includes wind noise of the fan system, flowing noise of the refrigerant, vibration transmission noise of the motor, and high-frequency electromagnetic noise of the controller, and these noise sources are all originated from the inside of the internal unit casing 1, and then will diffuse into the room through the internal unit casing 1. According to the noise nature difference, partial noise can further take place reflection and refraction with interior machine casing 1 and even the bearing wall that is used for accepting interior machine casing 1 at the in-process that sees through interior machine casing 1 to indoor diffusion to can aggravate to a certain extent and destroy the tone quality experience of indoor air conditioner noise.
According to the active noise reduction structure of the air conditioner, at least one group of sound collectors 4 are positioned in the inner machine shell 1 to start collecting noise signals, the collected audio analog signals are transmitted to the DSP processing module to be subjected to filtering processing and digital processing, the main control module 5 is subjected to self-adaptive analysis processing and digital-to-analog conversion, then analog control signals are output to the loudspeakers 3, at least one group of loudspeakers 3 start to send reverse audio waveforms different from the collected noise signals in the inner machine shell 1 according to the analog control signals, and then the noise of the air conditioner inner machine is cancelled or the noise value of the air conditioner inner machine is reduced in the inner machine shell 1. Meanwhile, in the next period, the sound collector 4 continues to collect noise signals on the secondary path, so that after continuous circulation and reciprocation, an active noise reduction technology can be used as a breakthrough, on the basis of ensuring the operation performance of the air conditioner, the noise value is effectively reduced from a noise source of an air conditioner internal unit, and the tone quality experience is improved.
The sound collector 4 may be, for example, a microphone. Also, as will be understood by those skilled in the art, the term "at least" as used herein shall also include: all sound collectors 4 and all speakers 3 also can be all located inside of the internal machine casing 1 and set up, or in order to further improve the noise reduction effect on the noise of the indoor air conditioner, when the sound collectors 4 and the speakers 3 are all provided with multiple groups, the sound collectors 4 and the speakers 3 also can all have part of groups to be set up outside the internal machine casing 1, and even when necessary, the sound collectors 4 and the speakers 3 also can all have part of groups to be located on the external machine casing of the air conditioner and arranged. The utility model does not require any particular restrictions with regard to the further arrangement of the sound collector 4 and the loudspeaker 3.
Preferably, the DSP processing module and the main control module 5 are integrally disposed on one PCB, or are distributed according to two independent PCBs.
Specifically, the main control module 5 can directly apply the processor of the air conditioner for adaptive design, and the DSP processing module can select whether to perform integrated arrangement or distributed arrangement with the main control module 5 according to the specific needs of the air conditioner manufacturer, so that convenience and adaptability of the active noise reduction structure of the air conditioner on the structural layout are promoted.
Preferably, the loudspeaker 3 contains an FIR filter unit.
Specifically, the phase-frequency response adjustment of the loudspeaker 3 can be realized by using the linear phase characteristics of the FIR filter unit, so that the output quality of the inverse audio waveform of the loudspeaker 3 is improved.
Preferably, an inner fan system is arranged inside the inner fan housing 1, the inner fan system includes an air outlet 2 located inside the inner fan housing 1, and at least one set of speakers 3 is arranged on two sides of the air outlet 2.
Specifically, the noise of the indoor unit of the air conditioner is taken as the most important factor of the noise of the indoor unit of the air conditioner, and the noise of the indoor unit of the air conditioner is reduced or eliminated, and even the sound quality experience is influenced. When the active noise reduction structure of the air conditioner directionally eliminates or reduces the internal air noise, if at least one group of loudspeakers 3 are arranged at two sides of the air outlet 2 of the internal air fan system positioned in the internal machine shell 1, the reverse audio waveform emitted by the loudspeakers 3 is favorably superposed with the air channel sound field of the internal air noise, and further, the directional noise reduction effect of the internal air noise is favorably improved from the source of the internal air noise of the air conditioner.
Preferably, at least one group of sound collectors 4 is arranged inside the inner machine casing 1, and is arranged on the opposite side of the loudspeaker 3 along the air outlet direction of the air outlet 2.
Specifically, at least one group of sound collectors 4 of the active noise reduction structure of the air conditioner are directionally installed in the air outlet direction of the air outlet 2 inside the inner machine shell 1, so that better audio signals for the noise of the inner machine air can be effectively collected and identified from the noise source of the inner machine of the air conditioner, and further, the better audio signals can be eliminated or reduced in a more targeted manner.
Preferably, the internal machine casing 1 is assembled by a bottom casing 11, a middle frame and a panel 12, and at least one group of the speakers 3 is fixedly mounted on the bottom casing 11.
Specifically, for example, in a household split air conditioner, when the internal machine casing 1 is installed, it is first fixedly connected to a bearing wall through the bottom casing 11, and then is sequentially assembled with the middle frame and the panel 12. Because the core spare part of air conditioning indoor sets such as interior machine fan system all can be located the inside arrangement of center, the inside physical space overall arrangement of center can be very compact and difficult the change, and with at least a set of speaker 3 fixed mounting on drain pan 11, then can fully realize that the air conditioner initiative falls the structure of making an uproar and fall the directional of making an uproar to the interior machine wind promptly on the air conditioning indoor set noise source head and fall, be favorable to suitably simplifying the physical layout of the structure of making an uproar that falls of air conditioner initiative again.
Preferably, at least one group of the sound collectors 4 is fixedly attached to the panel 12 inside the inner machine casing 1.
Specifically, as described above, at least one group of sound collectors 4 is fixed and attached to the panel 12 inside the inner casing 1, and then starts from another angle based on more targeted collection of noise signals, so as to further realize directional noise reduction of the active noise reduction structure of the air conditioner on the noise source of the inner unit of the air conditioner, that is, for the noise of the inner unit, and facilitate appropriately simplifying the physical layout of the active noise reduction structure of the air conditioner.
Example 2
Referring to fig. 1 to 4, the present invention further provides an internal blower system having the active noise reduction structure of the air conditioner described in embodiment 1.
The utility model also provides an indoor unit which is provided with the active noise reduction structure of the air conditioner in the embodiment 1.
The utility model also provides an air conditioner which is provided with the active noise reduction structure of the air conditioner in the embodiment 1.
Specifically, it can be understood by those skilled in the art that, when the internal fan system, the indoor unit, and the air conditioner provided in embodiment 2 have the active noise reduction structure of the air conditioner described in embodiment 1, the solution of the corresponding technical problem and the achievement of the technical effect thereof can be referred to the description of the active noise reduction structure of the air conditioner in embodiment 1, and are not described herein again.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (10)
1. The utility model provides a structure of making an uproar falls in air conditioner initiative, its characterized in that, includes sound collector (4), DSP processing module, host system (5), speaker (3) that communication is connected in proper order, the air conditioner includes interior machine casing (1), sound collector (4) with speaker (3) all have at least a set of being located the inside of interior machine casing (1) is seted up.
2. The active noise reduction structure of an air conditioner according to claim 1, wherein an inner fan system is arranged inside the inner fan housing (1), the inner fan system comprises an air outlet (2) located inside the inner fan housing (1), and at least one set of the speakers (3) is arranged on two sides of the air outlet (2).
3. The active noise reduction structure of an air conditioner according to claim 2, wherein at least one group of the sound collectors (4) is arranged inside the inner machine shell (1) along the air outlet direction of the air outlet (2) and at the opposite side of the loudspeaker (3).
4. The active noise reduction structure of the air conditioner according to claim 3, wherein the inner machine casing (1) is assembled by a bottom casing (11), a middle frame and a panel (12), and at least one group of the loudspeakers (3) is fixedly arranged on the bottom casing (11).
5. The active noise reduction structure of an air conditioner according to claim 4, characterized in that at least one group of the sound collectors (4) is fixedly attached to the panel (12) inside the internal machine casing (1).
6. An active noise reduction structure of an air conditioner according to any one of claims 1-5, characterized in that the DSP processing module and the main control module (5) are integrally arranged on a PCB board or distributed according to two independent PCB boards.
7. Active noise reduction structure for air conditioners according to any one of claims 1 to 5, characterized in that the loudspeaker (3) contains an FIR filter unit.
8. An indoor fan system, characterized in that the indoor fan system has the active noise reduction structure of an air conditioner as claimed in any one of claims 1 to 7.
9. An indoor unit, characterized in that the indoor unit has an air conditioner active noise reduction structure as set forth in any one of claims 1 to 7.
10. An air conditioner, characterized in that the air conditioner has an active noise reduction structure of the air conditioner as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220056405.7U CN216557624U (en) | 2022-01-10 | 2022-01-10 | Active noise reduction structure of air conditioner, indoor unit fan system, indoor unit and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220056405.7U CN216557624U (en) | 2022-01-10 | 2022-01-10 | Active noise reduction structure of air conditioner, indoor unit fan system, indoor unit and air conditioner |
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| Publication Number | Publication Date |
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| CN216557624U true CN216557624U (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220056405.7U Active CN216557624U (en) | 2022-01-10 | 2022-01-10 | Active noise reduction structure of air conditioner, indoor unit fan system, indoor unit and air conditioner |
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| Country | Link |
|---|---|
| CN (1) | CN216557624U (en) |
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