CN114440395B - Air conditioner noise reduction control method and device, air conditioner and storage medium - Google Patents
Air conditioner noise reduction control method and device, air conditioner and storage medium Download PDFInfo
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- CN114440395B CN114440395B CN202210175402.XA CN202210175402A CN114440395B CN 114440395 B CN114440395 B CN 114440395B CN 202210175402 A CN202210175402 A CN 202210175402A CN 114440395 B CN114440395 B CN 114440395B
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- 230000009467 reduction Effects 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 136
- 238000012937 correction Methods 0.000 claims description 25
- 238000012546 transfer Methods 0.000 claims description 4
- 230000030279 gene silencing Effects 0.000 abstract description 26
- 239000003507 refrigerant Substances 0.000 abstract description 15
- 230000003584 silencer Effects 0.000 description 18
- 230000008030 elimination Effects 0.000 description 10
- 238000003379 elimination reaction Methods 0.000 description 10
- 238000004378 air conditioning Methods 0.000 description 6
- 230000010349 pulsation Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 206010011878 Deafness Diseases 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
- F24F2130/40—Noise
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner noise reduction control method and device, an air conditioner and a storage medium, wherein the method comprises the following steps: acquiring frequency domain data of noise of an air conditioner; judging whether noise corresponding to a current frequency point in the frequency domain data is a compressor transmission sound or not; if yes, controlling the air conditioner according to the maximum value of the muffler transmission loss and the characteristic peak value of the compressor transmission sound so as to reduce noise generated by the air conditioner, otherwise, judging whether the noise corresponding to the next frequency point of the current frequency point in the frequency domain data is the compressor transmission sound, and by determining the relation among the opening of the electronic expansion valve, the flow velocity of the refrigerant in the pipeline, the central silencing frequency of the muffler and the characteristic peak value of the compressor transmission sound, the method can enable the effective silencing range of the muffler to contain the characteristic peak value of the compressor transmission sound, so that the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is eliminated, the noise reduction capability of the air conditioner is improved, and the user experience is improved.
Description
Technical Field
The present invention relates to the field of air conditioning technologies, and in particular, to a method and an apparatus for controlling noise reduction of an air conditioner, and a storage medium.
Background
With diversification of air-conditioning products, performance of the air-conditioning products becomes a main objective of competition among various manufacturers. The noise generated by the air conditioner is most complained by consumers, and the noise is also a main battlefield for competition among enterprises. On the typical air conditioning noise problem, compressor delivered sound is the noise most intolerable to consumers.
The compressor transmission sound can be classified into two types according to the generation cause, one is noise generated due to the transmission of compressor vibration into a room through a pipe, and the other is noise generated due to the propagation of pressure pulsation generated by the rotation of the compressor in a pipe. The solution of the former is mainly to add a damping hammer to restrain the vibration of the pipeline; the latter solution is mainly to add a muffler, but the type of muffler needs to be determined according to the characteristic frequency of the sound transmitted by the compressor. However, in the development process of the product, replacing the muffler to eliminate the compressor pulsation transmission sound can prolong the development period of the product, and aiming at the compressor transmission sound with different characteristic frequencies, the muffler with different specifications needs to be prepared, and the universalization of parts is extremely poor, so how to improve the noise reduction capability of the air conditioner is a problem to be solved.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention aims to provide an air conditioner noise reduction control method and device, an air conditioner and a storage medium.
The invention provides a noise reduction control method for an air conditioner, which at least comprises a muffler, and comprises the following steps:
acquiring frequency domain data of noise of the air conditioner;
judging whether noise corresponding to a current frequency point in the frequency domain data is a compressor transmission sound or not;
if so, controlling the air conditioner according to the maximum value of the muffler transmission loss and the characteristic peak value of the compressor transmission sound so as to reduce noise generated by the air conditioner, otherwise, judging whether the noise corresponding to the next frequency point of the current frequency point in the frequency domain data is the compressor transmission sound.
In addition, the air conditioner noise reduction control method according to the embodiment of the invention can also have the following additional technical characteristics:
further, the air conditioner is controlled according to the maximum value of the muffler transmission loss and the characteristic peak value of the compressor transmission sound, so as to reduce the noise generated by the air conditioner, and the method comprises the following steps:
if the characteristic peak value of the transmission sound of the compressor is larger than the sum of the maximum value of the transmission loss of the muffler and a first preset correction value, controlling the opening of the electronic expansion valve to be increased;
if the characteristic peak value of the transmission sound of the compressor is smaller than the difference between the maximum value of the transmission loss of the muffler and the first preset correction value, controlling the opening of the electronic expansion valve to be reduced;
and if the characteristic peak value of the transmission sound of the compressor is larger than or equal to the difference between the maximum value of the transmission loss of the muffler and the first preset correction value and smaller than or equal to the sum of the maximum value of the transmission loss of the muffler and the first preset correction value, sending out prompt information for selecting the coarse type muffler.
Further, the frequency corresponding to the frequency point in the frequency domain data is greater than 0Hz and less than 1000Hz.
Further, determining whether noise corresponding to the current frequency point in the frequency domain data is a compressor transmission sound includes:
judging whether the ratio of the characteristic peak value of the compressor transmission sound to the current running frequency of the compressor is an integer, if so, determining that the noise corresponding to the current frequency point in the frequency domain data is the compressor transmission sound; otherwise, determining that the noise corresponding to the current frequency point in the frequency domain data is not the sound transmitted by the compressor.
Further, determining a characteristic peak of the compressor delivered sound includes:
determining the sharpness of noise corresponding to the current frequency point in the frequency domain data;
and determining characteristic peaks of the sound transmitted by the compressor according to the sharpness.
Further, determining the sharpness of noise corresponding to the current frequency point in the frequency domain data includes:
ΔH＝B-(A+C)/2
wherein Δh is the sharpness of the noise corresponding to the current frequency point, B is the decibel value of the noise corresponding to the current frequency point in the frequency domain data, and A, C is the decibel value of the noise corresponding to two frequency points adjacent to the current frequency point in the frequency domain data.
Further, determining a characteristic peak of the compressor transfer tone based on the sharpness, comprising:
and judging whether the sharpness is smaller than a preset decibel value, if so, determining that the sharpness of the noise corresponding to the current frequency point is a characteristic peak value of the sound transmitted by the compressor.
Further, after obtaining the ratio of the characteristic peak value of the compressor transmission sound to the current operating frequency of the compressor, the method further comprises: and correcting the ratio according to a second preset correction value to obtain the integer.
According to the air conditioner noise reduction control method, based on the frequency domain data of the noise generated by the air conditioner, the relation among the opening of the electronic expansion valve, the flow velocity of the refrigerant in the pipeline, the central noise elimination frequency of the muffler and the characteristic peak value of the transmission sound of the compressor is determined, so that the effective noise elimination range of the muffler can contain the characteristic peak value of the transmission sound of the compressor, the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is eliminated, the noise reduction capability of the air conditioner is improved, and the user experience is improved.
In order to solve the above-mentioned problems, the present invention further provides an air conditioner noise reduction control device, where the air conditioner at least includes a muffler, and the device includes:
the acquisition module is used for acquiring the frequency domain data of the noise of the air conditioner;
the judging module is used for judging whether the noise corresponding to the current frequency point in the frequency domain data is a compressor transmission sound or not, and judging whether the noise corresponding to the next frequency point of the current frequency point in the frequency domain data is the compressor transmission sound or not when the noise corresponding to the current frequency point in the frequency domain data is not the compressor transmission sound;
and the control module is used for controlling the air conditioner according to the maximum value of the muffler transmission loss and the characteristic peak value of the compressor transmission sound when the noise corresponding to the current frequency point in the frequency domain data is the compressor transmission sound so as to reduce the noise generated by the air conditioner.
According to the air conditioner noise reduction control device provided by the embodiment of the invention, based on the frequency domain data of the noise generated by the air conditioner, the effective noise elimination range of the muffler can contain the characteristic peak value of the transmission sound of the compressor by determining the relation among the opening degree of the electronic expansion valve, the flow velocity of the refrigerant in the pipeline, the central noise elimination frequency of the muffler and the characteristic peak value of the transmission sound of the compressor, so that the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is eliminated, the noise reduction capability of the air conditioner is improved, and the user experience is improved.
In view of the above problems, the present invention also proposes an air conditioner including a muffler, the air conditioner further including: the air conditioner noise reduction control device according to any one of the above embodiments; or,
the air conditioner noise reduction control method according to any one of the above embodiments is implemented when the air conditioner noise reduction control program is executed by the processor.
According to the air conditioner provided by the embodiment of the invention, based on the frequency domain data of the noise generated by the air conditioner, the effective silencing range of the silencer can contain the characteristic peak value of the transmission sound of the compressor by determining the relation among the opening degree of the electronic expansion valve, the flow velocity of the refrigerant in the pipeline, the central silencing frequency of the silencer and the characteristic peak value of the transmission sound of the compressor, so that the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is eliminated, the noise reduction capability of the air conditioner is improved, and the user experience is improved.
In view of the foregoing, the present invention further provides a computer storage medium, where an air conditioner noise reduction control program is stored, where the air conditioner noise reduction control program implements the air conditioner noise reduction control method according to any one of the foregoing embodiments when executed by a processor.
According to the computer storage medium, when the air conditioner noise reduction control program stored on the computer storage medium is executed by the processor, the effective noise reduction range of the muffler can contain the characteristic peak value of the compressor transmission noise by determining the relation among the opening degree of the electronic expansion valve, the flow velocity of the refrigerant in the pipeline, the central noise reduction frequency of the muffler and the characteristic peak value of the compressor transmission noise based on the frequency domain data of the noise generated by the air conditioner, so that the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is eliminated, the noise reduction capability of the air conditioner is improved, and the user experience is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a flowchart of an air conditioner noise reduction control method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a muffler amount curve of a muffler according to one embodiment of the present invention;
fig. 3 is a schematic structural view of an air conditioner noise reduction control device according to an embodiment of the present invention;
fig. 4 is a schematic structural view of an air conditioner according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below, by way of example with reference to the accompanying drawings.
An air conditioner noise reduction control method, an air conditioner noise reduction control device, an air conditioner and a storage medium according to embodiments of the present invention are described below with reference to fig. 1 to 4.
Fig. 1 is a flowchart of an air conditioner noise reduction control method according to an embodiment of the present invention. As shown in fig. 1, the air conditioner at least comprises a muffler, and the air conditioner noise reduction control method comprises the following steps:
and S1, after the air conditioner is started, acquiring frequency domain data of noise generated by the air conditioner.
In a specific embodiment, a sound pressure sensor installed on an air conditioner can be used for acquiring a time domain audio signal of noise generated by the air conditioner, then the air conditioner controller is used for carrying out fourier transformation, and the time domain audio signal of the noise generated by the air conditioner is converted into frequency domain data of the noise, so that a frequency spectrum of the noise is obtained.
And S2, judging whether the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is a compressor transmission sound.
Specifically, the compressor transmission sound is noise generated by propagation of pressure pulsation generated by rotation of the air conditioner compressor in the pipe, and is mainly eliminated by the muffler. Because the frequency corresponding to the frequency point in the frequency domain of the compressor transmission sound is within 1000Hz, in order to improve the noise reduction efficiency of the air conditioner, only whether the noise corresponding to the frequency point which is more than 0Hz and less than 1000Hz in the frequency domain data of the noise generated by the air conditioner is the compressor transmission sound is judged.
And step S3, if the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is the compressor transmission sound, controlling the air conditioner according to the maximum value of the transmission loss of the muffler in the air conditioner and the characteristic peak value of the compressor transmission sound generated by the compressor, thereby reducing the noise generated by the air conditioner.
And S4, if the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is not the compressor transmission sound, judging whether the noise corresponding to the next frequency point in the frequency domain data of the current frequency point in the noise generated by the air conditioner is the compressor transmission sound or not so as to circulate the frequency point of the noise generated by the air conditioner, thereby improving the noise reduction capability of the air conditioner and improving the user experience.
In a specific embodiment, for example, there are 1000 frequency points in the frequency domain data of the noise generated by the air conditioner, it is necessary to determine whether the noise corresponding to all the frequency points in the frequency domain data of the noise generated by the air conditioner is a compressor transmission sound one by one, and if the noise corresponding to the frequency points in the frequency domain data of the noise generated by the air conditioner is a compressor transmission sound, the air conditioner is controlled according to the maximum value of the transmission loss of the muffler in the air conditioner and the characteristic peak value of the compressor transmission sound generated by the compressor, so that the noise generated by the air conditioner is reduced.
In one embodiment of the invention, the maximum value of the muffler transfer loss, i.e. the center muffling frequency, is e.g. F Is provided with The characteristic peak of the compressor transmission sound is F Peak to peak For example, if the first preset correction value is ΔA, the maximum value F of the muffler transmission loss is calculated Is provided with And characteristic peak value F of compressor transmission sound Peak to peak The air conditioner is controlled so as to reduce noise generated by the air conditioner, which comprises the following three conditions: the first case is the characteristic peak F of the compressor transmitted sound Peak to peak Greater than maximum value F of muffler transmission loss Is provided with The sum of the first preset correction value delta A and the opening of the electronic expansion valve is required to be controlled to be increased at the moment, so that the flow rate of the refrigerant in the pipeline of the air conditioner outdoor unit is accelerated; the second case is the characteristic peak F of the compressor transmission sound Peak to peak Less than maximum value F of muffler transmission loss Is provided with The difference between the first preset correction value delta A and the first preset correction value delta A is that the opening degree of the electronic expansion valve is required to be controlled to be reduced, so that the flow velocity of the refrigerant in the pipeline of the air conditioner outdoor unit is reduced; the third case is the characteristic peak F of the compressor transmission sound Peak to peak Greater than or equal to maximum value F of muffler transmission loss Is provided with A difference from the first preset correction value DeltaA and less than or equal to a maximum value F of muffler transmission loss Peak to peak And the sum of the first preset correction value delta A indicates that the silencing capability of the silencer of the current model is poor, and the air conditioner sends out prompt information for selecting the silencer of the coarse model. Therefore, the larger the opening of the electronic expansion valve is, the larger the flow velocity of the refrigerant in the pipeline is, and the larger the central silencing frequency of the corresponding silencer is, namely, the central silencing frequency of the silencer is changed by controlling the opening of the electronic expansion valve, so that the central silencing frequency is consistent with the characteristic frequency of the sound transmitted by the compressor, the noise reduction capability of the air conditioner is improved, and the user experience is improved.
Specifically, the muffler commonly used for an air conditioner is a simple expansion chamber muffler, the calculation formula of the amount of sound to be reduced is shown in formula (1), and the formula includes a sine function, so that the transmission loss curve of the muffler is a sine curve, and in a specific embodiment, the sound reduction amount curve of the muffler is shown in fig. 2.
Wherein DeltaL is the extinction volume, m expansion ratio, L is the expansion cavity length, and k wave numbers.
In a specific embodiment, as can be seen from FIG. 2, F Is provided with For the central silencing frequency of the silencer in the air conditioner, delta A is a first preset correction value, and the silencing range of the silencer is [ F ] Is provided with -ΔA，F Is provided with +ΔA]. If F Is provided with +ΔA<F Peak to peak At this time, the flow velocity of the refrigerant in the pipeline can be accelerated by increasing the opening of the electronic expansion valve, so that the actual center silencing frequency F of the silencer Is provided with The actual center silencing frequency is moved rightwards, so that the effective silencing range of the silencer can contain the characteristic peak value of the sound transmitted by the compressor, and noise corresponding to the current frequency point in frequency domain data of noise generated by an air conditioner is eliminated; if F Is provided with -ΔA>F Peak to peak At this time, the characteristic peak value of the transmission sound of the compressor is at the left side of the effective silencing range of the silencer, and at this time, the opening of the electronic expansion valve is reduced to reduce the flow speed of the refrigerant in the pipeline, so the actual central silencing frequency F of the silencer Is provided with The actual center silencing frequency is reduced, namely the actual center silencing frequency is shifted leftwards, so that the effective silencing range of the silencer can contain the characteristic peak value of the sound transmitted by the compressor, and noise corresponding to the current frequency point in frequency domain data of noise generated by an air conditioner is eliminated; if F Is provided with +ΔA>F Peak to peak >F Is provided with Delta A indicates that the characteristic peak value of the sound transmitted by the compressor is in the range of the muffler playing a silencing role, but is detected by the air conditioning system, and indicates that the silencing capability of the type of muffler is not achieved, the air conditioning system prompts to select a coarse type of muffler so as to improve the silencing capability of the muffler, thereby improving the noise reduction capability of the air conditioner and improving user experience.
Specifically, according to the embodiment of the invention, through determining the relation among the opening of the electronic expansion valve, the flow velocity of the refrigerant in the pipeline, the central silencing frequency of the silencer and the characteristic peak value of the transmission sound of the compressor, the effective silencing range of the silencer can contain the characteristic peak value of the transmission sound of the compressor, so that the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is eliminated, the silencing capability of the silencer is improved, the noise reduction capability of the air conditioner is improved, and the user experience is improved.
In one embodiment of the present invention, determining whether noise corresponding to a current frequency point in frequency domain data of noise generated by an air conditioner is a compressor transmission sound includes: and judging whether the ratio of the characteristic peak value of the compressor transmission sound to the current running frequency of the compressor is an integer, if so, determining that the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is the compressor transmission sound, otherwise, determining that the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is not the compressor transmission sound.
In one embodiment of the invention, determining a characteristic peak of a compressor transmitted sound includes: determining the sharpness of noise corresponding to a current frequency point in frequency domain data of noise generated by an air conditioner; and determining the characteristic peak value of the noise corresponding to the current frequency point according to the sharpness of the noise corresponding to the current frequency point, namely judging whether the sharpness is smaller than a preset decibel value, if so, determining the sharpness of the noise corresponding to the current frequency point as the characteristic peak value of the noise transmitted by the compressor, otherwise, indicating that the sharpness of the noise corresponding to the current frequency point is smaller, causing no hearing trouble to a user, and if not, determining the sharpness of the noise corresponding to the current frequency point as the characteristic peak value of the noise transmitted by the compressor.
In a specific embodiment, the preset dB value is, for example, 8dB, and the sharpness of the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is, for example, Δh, if the Δh value exceeds 8dB, which indicates that the sharpness of the noise corresponding to the current frequency point is large, which may cause trouble to the hearing of the user, then it is determined that the sharpness Δh of the noise corresponding to the current frequency point is a characteristic peak of the sound transmitted by the compressor, otherwise, the sharpness Δh of the noise corresponding to the current frequency point is not a characteristic peak of the sound transmitted by the compressor.
In one embodiment of the present invention, determining sharpness of noise corresponding to a current frequency point in frequency domain data of noise generated by an air conditioner includes:
ΔH＝B-(A+C)/2
wherein Δh is the sharpness of the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner, B is the decibel value of the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner, and A, C is the decibel value of the noise corresponding to two frequency points adjacent to the current frequency point in the frequency domain data of the noise generated by the air conditioner.
In one embodiment of the present invention, when determining whether the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is the compressor transmission sound, the ratio of the characteristic peak value of the compressor transmission sound to the current operating frequency of the compressor may not be an integer, because there may be a calculation error when determining the characteristic peak value of the compressor transmission sound, and therefore, the ratio needs to be corrected according to the second preset correction value to obtain the integer, that is, the integer is allowed to have a fluctuation value, for example, the fluctuation range of the fluctuation value is positive or negative 0.1, that is, the second preset correction value is positive or negative 0.1.
In a specific embodiment, in order to eliminate calculation errors, for example, the characteristic peak value of the transmission sound of the compressor is 121Hz, and the current operating frequency of the compressor is 60Hz, the ratio of the characteristic peak value of the transmission sound of the compressor to the current operating frequency of the compressor is 2.01, which is not an integer, and according to such ratio, it can also be determined that the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is the transmission sound of the compressor.
According to the air conditioner noise reduction control method, based on the frequency domain data of the noise generated by the air conditioner, the relation among the opening of the electronic expansion valve, the flow velocity of the refrigerant in the pipeline, the central noise elimination frequency of the muffler and the characteristic peak value of the transmission sound of the compressor is determined, so that the effective noise elimination range of the muffler can contain the characteristic peak value of the transmission sound of the compressor, the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is eliminated, the noise reduction capability of the air conditioner is improved, and the user experience is improved.
The further embodiment of the invention also discloses a noise reduction control device of the air conditioner, which at least comprises a muffler. Fig. 3 is a schematic structural view of an air conditioner noise reduction control device according to an embodiment of the present invention, and as shown in fig. 3, the device 10 includes: an acquisition module 11, a judgment module 12 and a control module 13.
The acquisition module 11 is used for acquiring frequency domain data of noise of the air conditioner; the judging module 12 is configured to judge whether noise corresponding to a current frequency point in the frequency domain data is a compressor transmission sound, and judge whether noise corresponding to a next frequency point of the current frequency point in the frequency domain data is a compressor transmission sound when noise corresponding to the current frequency point in the frequency domain data is not the compressor transmission sound; the control module 13 is configured to control the air conditioner according to a maximum value of the muffler transmission loss and a characteristic peak value of the compressor transmission sound when the noise corresponding to the current frequency point in the frequency domain data is the compressor transmission sound, so as to reduce the noise generated by the air conditioner.
In one embodiment of the present invention, the control module 13 controls the air conditioner according to the maximum value of muffler transmission loss and the characteristic peak value of compressor transmission sound to reduce noise generated by the air conditioner, including: if the characteristic peak value of the transmission sound of the compressor is larger than the sum of the maximum value of the transmission loss of the muffler and the first preset correction value, controlling the opening of the electronic expansion valve to be increased; if the characteristic peak value of the transmission sound of the compressor is smaller than the difference between the maximum value of the transmission loss of the muffler and the first preset correction value, controlling the opening of the electronic expansion valve to be reduced; if the characteristic peak value of the transmission sound of the compressor is larger than or equal to the difference between the maximum value of the transmission loss of the muffler and the first preset correction value and smaller than or equal to the sum of the maximum value of the transmission loss of the muffler and the first preset correction value, a prompt message for selecting the coarse type muffler is sent.
In one embodiment of the invention, the frequency points in the frequency domain data correspond to frequencies greater than 0Hz and less than 1000Hz.
In one embodiment of the present invention, the determining module 12 determines whether noise corresponding to a current frequency point in the frequency domain data is a compressor transmission sound, including: judging whether the ratio of the characteristic peak value of the compressor transmission sound to the current running frequency of the compressor is an integer, if so, determining that the noise corresponding to the current frequency point in the frequency domain data is the compressor transmission sound; otherwise, determining that the noise corresponding to the current frequency point in the frequency domain data is not the sound transmitted by the compressor.
In one embodiment of the invention, the apparatus 10 comprises: a determination module for determining a characteristic peak of a compressor delivery sound, comprising: determining the sharpness of noise corresponding to a current frequency point in the frequency domain data; based on the sharpness, a characteristic peak of the compressor's transmitted sound is determined.
In one embodiment of the present invention, the determining module determines sharpness of noise corresponding to a current frequency point in the frequency domain data, including:
ΔH＝B-(A+C)/2
wherein Δh is the sharpness of the noise corresponding to the current frequency point, B is the decibel value of the noise corresponding to the current frequency point in the frequency domain data, and A, C is the decibel value of the noise corresponding to two frequency points adjacent to the current frequency point in the frequency domain data.
In one embodiment of the invention, the determining module determines a characteristic peak of the compressor delivered sound based on the sharpness, comprising: and judging whether the sharpness is smaller than a preset decibel value, if so, determining that the sharpness of the noise corresponding to the current frequency point is a characteristic peak value of the sound transmitted by the compressor.
In one embodiment of the invention, the apparatus 10 comprises: and the correction module is used for correcting the ratio according to a second preset correction value after obtaining the ratio of the characteristic peak value of the compressor transmission sound to the current operating frequency of the compressor, so as to obtain the integer.
It should be noted that, when the air conditioner noise reduction control device 10 of the embodiment of the present invention performs air conditioner noise reduction, its specific implementation manner is similar to that of the air conditioner noise reduction control method of the embodiment of the present invention, and specific please refer to the description of the method section, and in order to reduce redundancy, the description is omitted here.
According to the air conditioner noise reduction control device 10 provided by the embodiment of the invention, based on the frequency domain data of the noise generated by the air conditioner, the effective noise elimination range of the muffler can contain the characteristic peak value of the transmission sound of the compressor by determining the relation among the opening degree of the electronic expansion valve, the flow velocity of the refrigerant in the pipeline, the central noise elimination frequency of the muffler and the characteristic peak value of the transmission sound of the compressor, so that the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is eliminated, the noise reduction capability of the air conditioner is improved, and the user experience is improved.
Further embodiments of the present invention also disclose an air conditioner including a muffler.
In some embodiments, as shown in fig. 4, the air conditioner further includes: the air conditioner noise reduction control device 10 according to any one of the embodiments described above. Namely, the air conditioner may include: an acquisition module 11 for acquiring frequency domain data of noise of an air conditioner; and a judging module 12 for judging whether the noise corresponding to the current frequency point in the frequency domain data is a compressor transmission sound, and judging whether the noise corresponding to the next frequency point of the current frequency point in the frequency domain data is a compressor transmission sound when the noise corresponding to the current frequency point in the frequency domain data is not a compressor transmission sound; and a control module 13 for controlling the air conditioner according to the maximum value of the muffler transmission loss and the characteristic peak value of the compressor transmission sound to reduce the noise generated by the air conditioner when the noise corresponding to the current frequency point in the frequency domain data is the compressor transmission sound.
In other embodiments, the air conditioner further comprises: the air conditioner noise reduction control method according to any one of the embodiments described above is implemented when the air conditioner noise reduction control program is executed by the processor.
According to the air conditioner provided by the embodiment of the invention, based on the frequency domain data of the noise generated by the air conditioner, the effective silencing range of the silencer can contain the characteristic peak value of the transmission sound of the compressor by determining the relation among the opening degree of the electronic expansion valve, the flow velocity of the refrigerant in the pipeline, the central silencing frequency of the silencer and the characteristic peak value of the transmission sound of the compressor, so that the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is eliminated, the noise reduction capability of the air conditioner is improved, and the user experience is improved.
Further embodiments of the present invention also disclose a computer storage medium, on which an air conditioner noise reduction control program is stored, which when executed by a processor, implements the air conditioner noise reduction control method according to any of the above embodiments.
According to the computer storage medium, when the air conditioner noise reduction control program stored on the computer storage medium is executed by the processor, the effective noise elimination range of the muffler can contain the characteristic peak value of the compressor transmission noise by determining the relation among the opening degree of the electronic expansion valve, the flow velocity of the refrigerant in the pipeline, the central noise elimination frequency of the muffler and the characteristic peak value of the compressor transmission noise based on the frequency domain data of the noise generated by the air conditioner, so that the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is eliminated, the noise reduction capability of the air conditioner is improved, and the user experience is improved.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. A noise reduction control method of an air conditioner, wherein the air conditioner at least comprises a muffler, the method comprising:
acquiring frequency domain data of noise of the air conditioner;
judging whether noise corresponding to the current frequency point in the frequency domain data is a compressor transmission sound or not comprises the following steps:
judging whether the ratio of the characteristic peak value of the compressor transmission sound to the current running frequency of the compressor is an integer, if so, determining that the noise corresponding to the current frequency point in the frequency domain data is the compressor transmission sound; otherwise, determining that the noise corresponding to the current frequency point in the frequency domain data is not the sound transmitted by the compressor;
if yes, controlling the air conditioner according to the maximum value of the muffler transmission loss and the characteristic peak value of the compressor transmission sound, and reducing the noise generated by the air conditioner by controlling the opening of an expansion valve to increase, reduce or select a coarse muffler, otherwise, judging whether the noise corresponding to the next frequency point of the current frequency point in the frequency domain data is the compressor transmission sound;
determining a characteristic peak of a compressor transmitted sound, comprising:
determining the sharpness of noise corresponding to the current frequency point in the frequency domain data;
determining a characteristic peak value of the compressor transmission sound according to the sharpness;
determining the sharpness of noise corresponding to the current frequency point in the frequency domain data comprises the following steps: Δh=b- (a+c)/2
Wherein Δh is the sharpness of the noise corresponding to the current frequency point, B is the decibel value of the noise corresponding to the current frequency point in the frequency domain data, and A, C is the decibel value of the noise corresponding to two frequency points adjacent to the current frequency point in the frequency domain data;
determining a characteristic peak of the compressor transfer tone based on the sharpness, comprising:
and judging whether the sharpness is smaller than a preset decibel value, if so, determining that the sharpness of the noise corresponding to the current frequency point is a characteristic peak value of the sound transmitted by the compressor.
2. The air conditioner noise reduction control method according to claim 1, wherein the air conditioner is controlled according to a maximum value of muffler transmission loss and a characteristic peak value of the compressor transmission sound to reduce noise generated by the air conditioner, comprising:
if the characteristic peak value of the transmission sound of the compressor is larger than the sum of the maximum value of the transmission loss of the muffler and a first preset correction value, controlling the opening of the electronic expansion valve to be increased;
if the characteristic peak value of the transmission sound of the compressor is smaller than the difference between the maximum value of the transmission loss of the muffler and the first preset correction value, controlling the opening of the electronic expansion valve to be reduced;
and if the characteristic peak value of the transmission sound of the compressor is larger than or equal to the difference between the maximum value of the transmission loss of the muffler and the first preset correction value and smaller than or equal to the sum of the maximum value of the transmission loss of the muffler and the first preset correction value, sending out prompt information for selecting the coarse type muffler.
3. The air conditioner noise reduction control method according to claim 1, wherein the frequency corresponding to the frequency point in the frequency domain data is greater than 0Hz and less than 1000Hz.
4. The air conditioner noise reduction control method according to claim 1, further comprising, after obtaining a ratio of a characteristic peak value of the compressor transmission sound to a current operating frequency of the compressor: and correcting the ratio according to a second preset correction value to obtain the integer.
5. An air conditioner noise reduction control device, wherein the air conditioner at least comprises a muffler, the device comprising:
the acquisition module is used for acquiring the frequency domain data of the noise of the air conditioner;
the judging module is used for judging whether the noise corresponding to the current frequency point in the frequency domain data is a compressor transmission sound or not, judging whether the ratio of the characteristic peak value of the compressor transmission sound to the current running frequency of the compressor is an integer or not, and if yes, determining that the noise corresponding to the current frequency point in the frequency domain data is the compressor transmission sound; otherwise, determining that the noise corresponding to the current frequency point in the frequency domain data is not the sound transmitted by the compressor;
when the noise corresponding to the current frequency point in the frequency domain data is not the compressor transmission sound, judging whether the noise corresponding to the next frequency point of the current frequency point in the frequency domain data is the compressor transmission sound;
the control module is used for controlling the air conditioner according to the maximum value of the muffler transmission loss and the characteristic peak value of the compressor transmission sound when the noise corresponding to the current frequency point in the frequency domain data is the compressor transmission sound, and reducing the noise generated by the air conditioner by controlling the opening of the expansion valve to increase, reduce or select a coarse muffler;
determining a characteristic peak of a compressor transmitted sound, comprising:
determining the sharpness of noise corresponding to the current frequency point in the frequency domain data;
determining a characteristic peak value of the compressor transmission sound according to the sharpness;
determining the sharpness of noise corresponding to the current frequency point in the frequency domain data comprises the following steps: Δh=b- (a+c)/2
Wherein Δh is the sharpness of the noise corresponding to the current frequency point, B is the decibel value of the noise corresponding to the current frequency point in the frequency domain data, and A, C is the decibel value of the noise corresponding to two frequency points adjacent to the current frequency point in the frequency domain data;
determining a characteristic peak of the compressor transfer tone based on the sharpness, comprising:
and judging whether the sharpness is smaller than a preset decibel value, if so, determining that the sharpness of the noise corresponding to the current frequency point is a characteristic peak value of the sound transmitted by the compressor.
6. An air conditioner, characterized in that the air conditioner comprises a muffler, the air conditioner further comprising: the air conditioner noise reduction control device according to claim 5; or,
a processor, a memory, and an air conditioner noise reduction control program stored on the memory and executable on the processor, which when executed by the processor, implements the air conditioner noise reduction control method of any one of claims 1-4.
7. A computer storage medium, wherein an air conditioner noise reduction control program is stored on the computer storage medium, and when the air conditioner noise reduction control program is executed by a processor, the air conditioner noise reduction control method according to any one of claims 1 to 4 is implemented.
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