CN114440395A - 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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- 230000009467 reduction Effects 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims abstract description 132
- 230000003584 silencer Effects 0.000 claims abstract description 37
- 238000012937 correction Methods 0.000 claims description 25
- 238000012546 transfer Methods 0.000 claims description 7
- 230000030279 gene silencing Effects 0.000 abstract description 18
- 239000003507 refrigerant Substances 0.000 abstract description 15
- 230000008030 elimination Effects 0.000 description 9
- 238000003379 elimination reaction Methods 0.000 description 9
- 238000004378 air conditioning Methods 0.000 description 6
- 230000010349 pulsation Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
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- 238000013016 damping Methods 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
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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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Abstract
The invention discloses an air conditioner noise reduction control method, an air conditioner noise reduction control 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 the noise corresponding to the current frequency point in the frequency domain data is the compressor transmission sound; if so, controlling the air conditioner according to the maximum value of the transmission loss of the silencer and the characteristic peak value of the transmitted sound of the compressor to reduce the 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 transmitted sound of the compressor, and enabling the effective silencing range of the silencer to contain the characteristic peak value of the transmitted sound of the compressor by determining the opening degree of the electronic expansion valve, the flow rate of a refrigerant in a pipeline, the central silencing frequency of the silencer and the characteristic peak value of the transmitted 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.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner noise reduction control method and device, an air conditioner and a storage medium.
Background
With the diversification of air conditioning products, the performance of the air conditioning products becomes a main target of competition among manufacturers. Among them, the noise generated by the air conditioner is most complained by consumers, and is also a main battlefield for competition among enterprises. Compressor delivered noise is the most intolerable noise to consumers in terms of typical air conditioning noise issues.
The compressor transmission noise may be classified into two types according to the generation cause, one is noise generated due to the vibration of the compressor transmitted to the indoor through the pipe, and the other is noise caused by the pressure pulsation generated by the rotation of the compressor propagated in the pipe. The former solution is mainly to add a damping hammer to suppress the vibration of the pipeline; the latter solution is mainly to add a muffler, but the type of the muffler needs to be determined according to the characteristic frequency of the compressor transmission sound. However, in the development process of products, the replacement of the muffler to eliminate the pulsation transmission sound of the compressor prolongs the development cycle of the products, and for the compressor transmission sound with different characteristic frequencies, mufflers with different specifications need to be prepared, and the generalization of parts is extremely poor, so how to improve the noise reduction capability of the air conditioner is a problem to be solved urgently.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of 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, wherein the air conditioner at least comprises a silencer, and the method comprises the following steps:
acquiring frequency domain data of noise of the air conditioner;
judging whether the noise corresponding to the current frequency point in the frequency domain data is compressor transmission sound;
if so, controlling the air conditioner according to the maximum value of the transmission loss of the silencer and the characteristic peak value of the compressor transmission sound so as to reduce the 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 may further have the following additional technical features:
further, the air conditioner is controlled according to the maximum value of the transmission loss of the muffler and the characteristic peak value of the transmission sound of the compressor 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 greater 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 increase;
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 degree of the electronic expansion valve to be reduced;
and if the characteristic peak value of the compressor transmission sound is greater than or equal to the difference between the maximum value of the muffler transmission loss and the first preset correction value and is less than or equal to the sum of the maximum value of the muffler transmission loss and the first preset correction value, sending prompt information for selecting a coarse muffler.
Further, the frequency corresponding to the frequency points in the frequency domain data is greater than 0Hz and less than 1000 Hz.
Further, determining whether the noise corresponding to the current frequency point in the frequency domain data is a compressor transmission noise includes:
judging whether the ratio of the characteristic peak value of the compressor transmission sound to the current operating frequency of the compressor is an integer or not, if so, determining the noise corresponding to the current frequency point in the frequency domain data as the compressor transmission sound; otherwise, determining that the noise corresponding to the current frequency point in the frequency domain data is not the compressor transmission sound.
Further, determining a characteristic peak of compressor delivered sound includes:
determining the sharpness of noise corresponding to a current frequency point in the frequency domain data;
and determining the characteristic peak value of the compressor transfer sound according to the sharpness.
Further, determining the sharpness of noise corresponding to a current frequency point in the frequency domain data comprises:
ΔH＝B-(A+C)/2
wherein Δ H 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 are the decibel values of the noise corresponding to two frequency points adjacent to the current frequency point in the frequency domain data, respectively.
Further, determining 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 or not, and if so, determining the sharpness of the noise corresponding to the current frequency point as a characteristic peak value of the compressor transmission sound.
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 the following steps: and correcting the ratio according to a second preset correction value to obtain the integer.
According to the air conditioner noise reduction control method 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 silencer can contain the characteristic peak value of the compressor transmission sound by determining the opening of the electronic expansion valve, the flow velocity of the refrigerant in the pipeline, the central noise elimination frequency of the silencer and 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.
In view of the above problems, the present invention further provides a noise reduction control device for an air conditioner, where the air conditioner at least includes a muffler, and the device includes:
the acquisition module is used for acquiring 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 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 transmission loss of the silencer and the characteristic peak value of the transmission sound of the compressor when the noise corresponding to the current frequency point in the frequency domain data is the transmission sound of the compressor 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 reduction range of the muffler can contain the characteristic peak value of the compressor transmission sound by determining the opening 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 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.
In view of the above problems, the present invention further provides an air conditioner, which includes a muffler, and the air conditioner further includes: the noise reduction control device for the air conditioner according to any one of the embodiments; alternatively, the first and second electrodes may be,
the system comprises a processor, a memory and an air conditioner noise reduction control program which is stored on the memory and can run on the processor, wherein the air conditioner noise reduction control program realizes the air conditioner noise reduction control method of any one embodiment when being 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 compressor transmission sound by determining 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 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.
In view of the above problems, the present invention further provides a computer storage medium, where an air conditioner noise reduction control program is stored in the computer storage medium, and when executed by a processor, the air conditioner noise reduction control program implements the air conditioner noise reduction control method according to any of the above embodiments.
According to the computer storage medium of the embodiment of the invention, when the air conditioner noise reduction control program stored on the computer storage medium is executed by the processor, 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 sound transmitted by the compressor by determining the relationship among the opening degree of the electronic expansion valve, the flow rate of the refrigerant in the pipeline, the central noise elimination frequency of the muffler and the characteristic peak value of the sound transmitted by 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.
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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of 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 graphical illustration of the muffling volume of a muffler according to one embodiment of the present invention;
fig. 3 is a schematic structural view of a noise reduction control apparatus for an air conditioner 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, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
The following describes an air conditioner noise reduction control method, device, air conditioner and storage medium according to an embodiment of the present invention 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, a noise reduction control method of an air conditioner, the air conditioner including at least a muffler, the noise reduction control method of the air conditioner includes the steps of:
and step S1, acquiring frequency domain data of noise generated by the air conditioner after the air conditioner is started.
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 an air conditioner controller is used for carrying out Fourier transform, the time domain audio signal of the noise generated by the air conditioner is converted into frequency domain data of the noise, and the frequency spectrum of the noise is obtained.
And step 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 the compressor transmission sound.
Specifically, the compressor transmission noise is noise generated by pressure pulsation generated by rotation of the air conditioning compressor propagating through the pipe, and is mainly eliminated by a muffler. Because the frequency corresponding to the frequency point in the frequency domain of the sound transferred by the compressor is within 1000Hz, in order to improve the noise reduction efficiency of the air conditioner, only 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 judged whether to be the sound transferred by the compressor.
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 silencer 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 step 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 of the current frequency point in the frequency domain data of 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, if 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 the 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 the 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 as to reduce the noise generated by the air conditioner.
In one embodiment of the invention, the maximum value of the transmission loss of the muffler, i.e. the central muffling frequency, is, for example, FIs provided withThe characteristic peak of the compressor transfer sound being, for example, FPeak(s)If the first predetermined correction value is Δ A, for example, the maximum value F of the transmission loss of the muffler is usedIs provided withCharacteristic peak value F of compressor transmission soundPeak(s)The air conditioner is controlled to reduce the noise generated by the air conditioner, and the following three conditions are included: the first case is the characteristic peak F of the compressor delivered soundPeak(s)Greater than the maximum value F of the transmission loss of the mufflerIs provided withThe sum of the first preset correction value delta A and the first preset correction value delta A, the opening of the electronic expansion valve needs to be controlled to be increased, and the flow rate of the refrigerant in the pipeline of the air conditioner outdoor unit is accelerated; the second case being the characteristic peak F of the compressor delivered soundPeak(s)Less than maximum value F of transmission loss of silencerIs provided withThe difference between the difference value and the first preset correction value delta A, at the moment, the opening of the electronic expansion valve needs to be controlled to be reduced, so that the flow speed 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 transfer soundPeak(s)Greater than or equal to the maximum value F of the transmission loss of the mufflerIs provided withA difference from the first preset correction value Delta A and less than or equal to the maximum value F of the transmission loss of the silencerPeak(s)And the sum of the current model and the first preset correction value delta A, which indicates that the silencing capability of the silencer of the current model is poor, and the air conditioner sends out prompt information for selecting a silencer of a coarse model. Therefore, the larger the opening degree of the electronic expansion valve is, the larger the flow velocity of the refrigerant in the pipeline is, the larger the center muffling frequency of the corresponding muffler is, that is, the center muffling frequency of the muffler is changed by controlling the opening degree of the electronic expansion valve to be consistent with the characteristic frequency of the transmitted sound of the compressor, so that the noise reduction capability of the air conditioner is improved, and the user experience is improved.
Specifically, the muffler commonly used in the air conditioner is a simple expansion chamber muffler, and the formula for calculating the muffling volume 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 muffling volume curve of the muffler is shown in fig. 2.
Where Δ L is the blanking volume, m expansion ratio, L is the expansion cavity length, k wave numbers.
In the embodiment, as can be seen from FIG. 2, FIs provided withIf delta A is a first preset correction value for the central silencing frequency of the silencer in the air conditioner, the range of silencing action of the silencer is FIs provided with-ΔA，FIs provided with+ΔA]. If FIs provided with+ΔA<FPeak(s)At this time, the peak value of the transmission sound of the compressor is at the right side of the effective range of the silencer, and the flow speed of the refrigerant in the pipeline can be accelerated by increasing the opening of the electronic expansion valve, so the actual central silencing frequency F of the silencerIs provided withIncreasing, namely shifting the actual central silencing frequency to the right, so that the effective silencing range of the silencer can contain the characteristic peak value of the transmitted sound of the compressor, and the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is eliminated; if FIs provided with-ΔA>FPeak(s)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 flow speed of the refrigerant in the pipeline can be reduced by reducing the opening of the electronic expansion valve, so the actual central silencing frequency F of the silencerIs provided withReducing, namely moving the actual center silencing frequency to the left, so that the effective silencing range of the silencer can contain the characteristic peak value of the compressor transmission sound, and the noise corresponding to the current frequency point in the frequency domain data of the noise generated by the air conditioner is eliminated; if FIs provided with+ΔA>FPeak(s)>FIs provided withA, indicating that the characteristic peak value of the sound transmitted by the compressor is in the range of the sound attenuation function of the silencer, but the characteristic peak value is detected by the air conditioning system, indicating that the sound attenuation capacity of the silencer of the model is not achieved, the air conditioning system prompts to select a silencer of a coarse model,the noise elimination capability of the silencer is improved, the noise reduction capability of the air conditioner is improved, and the user experience is improved.
Specifically, according to the embodiment of the invention, by determining the relationship 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 compressor transmission sound, the effective silencing range of the silencer can include 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 silencing capability of the silencer is improved, the noise reduction capability of the air conditioner is improved, and the user experience is improved.
In an 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 compressor transmission sound includes: judging whether the ratio of the characteristic peak value of the compressor transmission sound to the current operating 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 compressor delivered sound comprises: determining the sharpness of noise corresponding to a current frequency point in frequency domain data of the noise generated by the air conditioner; and determining the characteristic peak value of the compressor transmission sound 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 that the sharpness of the noise corresponding to the current frequency point is the characteristic peak value of the compressor transmission sound, otherwise, indicating that the sharpness of the noise corresponding to the current frequency point is smaller, and not causing the trouble of the user in hearing, and the sharpness of the noise corresponding to the current frequency point is not the characteristic peak value of the compressor transmission sound.
In a specific embodiment, the preset decibel value is, for example, 8dB, 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, Δ H, and if the Δ H value exceeds 8dB, it is determined that the sharpness of the noise corresponding to the current frequency point is large and may cause a trouble to a user's hearing, and it is determined that the sharpness Δ H of the noise corresponding to the current frequency point is a characteristic peak value of the compressor transmission sound, otherwise, the sharpness Δ H of the noise corresponding to the current frequency point is not a characteristic peak value of the compressor transmission sound.
In one embodiment of the present invention, determining the 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 Δ H is a sharpness of noise corresponding to the current frequency point in the frequency domain data of noise generated by the air conditioner, B is a decibel value of noise corresponding to the current frequency point in the frequency domain data of noise generated by the air conditioner, and A, C are decibel values of noise corresponding to two frequency points adjacent to the current frequency point in the frequency domain data of noise generated by the air conditioner, respectively.
In an 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 is a calculation error when determining the characteristic peak value of the compressor transmission sound, and therefore, the ratio needs to be corrected according to a second preset correction value to obtain the integer, that is, the obtained integer is allowed to have a fluctuation value, for example, the fluctuation range of the fluctuation value is plus or minus 0.1, that is, the second preset correction value is plus or minus 0.1.
In an embodiment, in order to eliminate the calculation error, for example, if the characteristic peak of the compressor transmission sound is 121Hz and the current operating frequency of the compressor is 60Hz, the ratio of the characteristic peak of the compressor transmission sound to the current operating frequency of the compressor is 2.01, which is not an integer, and according to such ratio, it may 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 compressor transmission sound.
According to the air conditioner noise reduction control method 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 silencer can contain the characteristic peak value of the compressor transmission sound by determining the opening of the electronic expansion valve, the flow velocity of the refrigerant in the pipeline, the central noise elimination frequency of the silencer and 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.
The invention further discloses a noise reduction control device of the air conditioner, and the air conditioner at least comprises a silencer. Fig. 3 is a schematic structural diagram of a noise reduction control apparatus for an air conditioner according to an embodiment of the present invention, and as shown in fig. 3, the apparatus 10 includes: the device comprises an acquisition module 11, a judgment module 12 and a control module 13.
The acquiring module 11 is configured to acquire frequency domain data of noise of an air conditioner; the judging module 12 is configured to judge whether a noise corresponding to a current frequency point in the frequency domain data is a compressor transmission sound, and when the noise corresponding to the current frequency point in the frequency domain data is not the compressor transmission sound, judge whether a noise corresponding to a next frequency point of the current frequency point in the frequency domain data is the compressor transmission sound; the control module 13 is configured to control the air conditioner according to the maximum value of the transmission loss of the muffler and the characteristic peak 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 an embodiment of the present invention, the control module 13 controls the air conditioner according to the maximum value of the transmission loss of the muffler and the characteristic peak value of the transmission sound of the compressor, so as to reduce the noise generated by the air conditioner, including: if the characteristic peak value of the transmission sound of the compressor is greater than the sum of the maximum value of the transmission loss of the muffler and a first preset correction value, controlling the opening degree of the electronic expansion valve to increase; 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 degree of the electronic expansion valve to be reduced; and if the characteristic peak value of the transmission sound of the compressor is greater than or equal to the difference between the maximum value of the transmission loss of the silencer and the first preset correction value and is less than or equal to the sum of the maximum value of the transmission loss of the silencer and the first preset correction value, sending prompt information for selecting the thick-model silencer.
In one embodiment of the invention, the frequency points in the frequency domain data correspond to frequencies greater than 0Hz and less than 1000 Hz.
In an embodiment of the present invention, the determining module 12 determines whether the noise corresponding to the 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 operating frequency of the compressor is an integer or not, if so, determining the noise corresponding to the current frequency point in the frequency domain data as the compressor transmission sound; otherwise, determining that the noise corresponding to the current frequency point in the frequency domain data is not the compressor transmission sound.
In one embodiment of the present invention, the apparatus 10 comprises: a determination module for determining a characteristic peak of compressor delivered sound, comprising: determining the sharpness of noise corresponding to a current frequency point in frequency domain data; based on the sharpness, a characteristic peak of the compressor delivered sound is determined.
In one embodiment of the 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 Δ H 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 are the decibel values of the noise corresponding to two frequency points adjacent to the current frequency point in the frequency domain data, respectively.
In one embodiment of the invention, the determining module determines a characteristic peak of compressor delivered sound based on the sharpness, comprising: and judging whether the sharpness is smaller than a preset decibel value or not, and if so, determining the sharpness of the noise corresponding to the current frequency point as a characteristic peak value of the compressor transmission sound.
In one embodiment of the present invention, the apparatus 10 comprises: and the correction module is used for correcting the ratio according to a second preset correction value after the ratio of the characteristic peak value of the compressor transmission sound to the current operating frequency of the compressor is obtained, so that the integer is obtained.
It should be noted that, when the air conditioner noise reduction control device 10 according to the embodiment of the present invention performs air conditioner noise reduction, a specific implementation manner of the air conditioner noise reduction control method according to the embodiment of the present invention is similar to that of the air conditioner noise reduction control method according to the embodiment of the present invention, and please refer to the description of the method part specifically, and details are not described here again in order to reduce redundancy.
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 reduction range of the muffler can contain the characteristic peak value of the compressor transmission sound by determining the opening 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 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.
A further embodiment of the present invention also discloses an air conditioner including a muffler.
In some embodiments, as shown in fig. 4, the air conditioner further includes: the noise reduction control device 10 for an air conditioner according to any one of the above embodiments. Namely, the air conditioner may include: an acquisition module 11 for acquiring frequency domain data of noise of the 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 transmission loss of the muffler and the characteristic peak value of the transmission sound of the compressor when the noise corresponding to the current frequency point in the frequency domain data is the transmission sound of the compressor, so as to reduce the noise generated by the air conditioner.
In other embodiments, the air conditioner further comprises: the system comprises a processor, a memory and an air conditioner noise reduction control program stored on the memory and capable of running on the processor, wherein the air conditioner noise reduction control program realizes the air conditioner noise reduction control method according to any one of the embodiments when being 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 compressor transmission sound by determining 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 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.
A further embodiment of the present invention also discloses 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 one of the embodiments described above.
According to the computer storage medium implemented by the invention, when the air conditioner noise reduction control program stored on the computer storage medium is executed by the processor, 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 transmitted sound of the compressor by determining the relationship among the opening degree of the electronic expansion valve, the flow rate of the refrigerant in the pipeline, the central noise elimination frequency of the muffler and the characteristic peak value of the transmitted 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 the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. An air conditioner noise reduction control method, characterized in that the air conditioner includes at least a muffler, the method comprising:
acquiring frequency domain data of noise of the air conditioner;
judging whether the noise corresponding to the current frequency point in the frequency domain data is compressor transmission sound;
if so, controlling the air conditioner according to the maximum value of the transmission loss of the silencer and the characteristic peak value of the compressor transmission sound so as to reduce the 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.
2. The noise reduction control method of an air conditioner according to claim 1, wherein controlling the air conditioner to reduce noise generated from the air conditioner according to a maximum value of a muffler transfer loss and a characteristic peak value of the compressor transfer sound comprises:
if the characteristic peak value of the transmission sound of the compressor is greater 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 increase;
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 degree of the electronic expansion valve to be reduced;
and if the characteristic peak value of the compressor transmission sound is greater than or equal to the difference between the maximum value of the muffler transmission loss and the first preset correction value and is less than or equal to the sum of the maximum value of the muffler transmission loss and the first preset correction value, sending prompt information for selecting a coarse 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 1000 Hz.
4. The method for controlling noise reduction of an air conditioner according to claim 1, wherein judging whether the noise corresponding to the current frequency point in the frequency domain data is a compressor transmission noise comprises:
judging whether the ratio of the characteristic peak value of the compressor transmission sound to the current operating frequency of the compressor is an integer or not, if so, determining the noise corresponding to the current frequency point in the frequency domain data as the compressor transmission sound; otherwise, determining that the noise corresponding to the current frequency point in the frequency domain data is not the compressor transmission sound.
5. The air conditioner noise reduction control method according to any one of claims 1 to 4, wherein determining a characteristic peak value of compressor transfer sound comprises:
determining the sharpness of noise corresponding to a current frequency point in the frequency domain data;
and determining the characteristic peak value of the compressor transfer sound according to the sharpness.
6. The air conditioner noise reduction control method according to claim 5, wherein determining the sharpness of the noise corresponding to the current frequency point in the frequency domain data comprises:
ΔH＝B-(A+C)/2
wherein Δ H 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 are the decibel values of the noise corresponding to two frequency points adjacent to the current frequency point in the frequency domain data, respectively.
7. The air conditioner noise reduction control method according to claim 5, wherein determining a characteristic peak of the compressor delivered sound according to the sharpness comprises:
and judging whether the sharpness is smaller than a preset decibel value or not, and if so, determining the sharpness of the noise corresponding to the current frequency point as a characteristic peak value of the compressor transmission sound.
8. The noise reduction control method of an air conditioner according to claim 4, further comprising, after obtaining a ratio of a characteristic peak 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.
9. An air conditioner noise reduction control apparatus characterized in that the air conditioner includes at least a muffler, the apparatus comprising:
the acquisition module is used for acquiring 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 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 transmission loss of the silencer and the characteristic peak value of the transmission sound of the compressor when the noise corresponding to the current frequency point in the frequency domain data is the transmission sound of the compressor so as to reduce the noise generated by the air conditioner.
10. An air conditioner, characterized in that, the air conditioner includes the silencer, the air conditioner still includes: the noise reduction control device of the air conditioner according to claim 9; alternatively, the first and second electrodes may be,
a processor, a memory, and an air conditioner noise reduction control program stored on the memory and executable on the processor, the air conditioner noise reduction control program when executed by the processor implementing the air conditioner noise reduction control method of any one of claims 1-8.
11. A computer storage medium, characterized in that the computer readable storage medium has stored thereon an air conditioner noise reduction control program which, when executed by a processor, implements the air conditioner noise reduction control method according to any one of claims 1 to 8.
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