CN111043637A - Intelligent adjusting method for noise of range hood - Google Patents
Intelligent adjusting method for noise of range hood Download PDFInfo
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- CN111043637A CN111043637A CN202010000627.2A CN202010000627A CN111043637A CN 111043637 A CN111043637 A CN 111043637A CN 202010000627 A CN202010000627 A CN 202010000627A CN 111043637 A CN111043637 A CN 111043637A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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Abstract
The invention relates to an intelligent regulation method of the noise of a range hood, establish the ideal rotational speed-noise relation list between the corresponding operating rotational speed and noise range value of the range hood under the ideal operating condition in advance, through detecting the real-time external noise value at the air inlet of the range hood and the real-time operating noise value when the real-time external noise value runs stably, utilize the inner and outer noise combination mode of the range hood to get the true value of the operating noise of the range hood under the true noise condition accurately; according to the detection of the real-time backpressure value of the smoke exhaust channel and the temperature in the range of the preset distance below the range hood, when a user is determined to exist below the range hood, the current operation rotating speed of the range hood is adjusted to the operation rotating speed corresponding to the real value of the operation noise in the ideal rotating speed-noise relation list, the rotating speed of the range hood during operation can be adjusted along with the generated noise, the noise of the range hood during operation is adjusted to the noise range in the ideal state, and the use feeling of the user is prevented from being influenced.
Description
Technical Field
The invention relates to the field of range hoods, in particular to an intelligent noise adjusting method for a range hood.
Background
With the importance of people on the quality of home life and the health, the range hood becomes necessary equipment in the kitchen of people. Meanwhile, because the user continuously improves the cooking environment and the cooking experience requirements, the range hood has no longer only a single suction and exhaust function.
It is known that, in the operation process of the range hood, the air volume and the noise thereof are two parameters showing 'this trade-off'. As two most important indexes for measuring the comprehensive capacity of the range hood, the two parameters of the air quantity and the noise cannot be wasted. In consideration of the using habits, the using crowds and the difference of the using environment of different users, the air volume and the noise generated by the same range hood in the working process can generate completely different experience feelings for different users; even aiming at the same user, the air volume and the noise of the same oil fume suction device in different use environments can also produce different and completely identical experience effects.
In order to meet the experience feeling or use habit of a user on the air volume and noise of the range hood, manufacturers in the market mainly set a noise detection sensor on the range hood at present, and then output a control instruction aiming at the air volume of the range hood according to the detected noise condition of the range hood, so that the noise volume is adjusted to meet the acceptable degree of the user by adjusting the air volume of the range hood.
However, the above method for adjusting the noise of the range hood to the user satisfaction has some problems: firstly, the arrangement position of the noise detection sensor on the range hood is not clear, so that the detected internal noise value of the range hood cannot truly reflect the current operation state of the range hood; secondly, the adjustment of the air volume of the range hood is still based on the already set adjustment scheme, and the self-adaptive adjustment of the air volume of the range hood and the operation noise value of the range hood cannot be realized.
Of course, some manufacturers have adopted other noise reduction schemes for range hoods. For example, chinese patent application CN108731045A discloses that the present invention provides a noise reduction method for a range hood, which generates and plays a noise reduction with the same amplitude and opposite phase to the operating noise of the range hood, so as to effectively reduce the medium and low frequency noise in the range hood, thereby providing good user experience and avoiding the user trouble of being affected by noise when using the range hood. However, since the noise reduction method of the invention patent application CN108731045A needs to always ensure that the real-time amplitude of the generated noise is the same as the real-time operation noise value amplitude of the oil extractor, it needs to use an accurate noise filtering technology to remove the interference of other external noise to the noise of the oil extractor, which undoubtedly increases the technical implementation difficulty and the manufacturing cost of the hardware noise reduction device.
Disclosure of Invention
The first technical problem to be solved by the present invention is to provide an intelligent noise adjusting method for a range hood in view of the above prior art. By adopting the intelligent noise adjusting method for the range hood, the automatic adjustment of the operating rotating speed of the range hood along with the change of noise can be realized, so that the influence caused by the noise of the range hood is reduced.
The second technical problem to be solved by the present invention is to provide an intelligent method for adjusting the noise of a range hood, which can accurately acquire the real-time operation noise value of a fan system, in view of the above prior art.
The technical scheme adopted by the invention for solving the first technical problem is as follows: an intelligent noise adjusting method for a range hood is characterized by comprising the following steps:
step 1, pre-establishing an ideal rotating speed-noise relation list between the corresponding operating rotating speed and noise range value of the range hood in an ideal operating state; the operation rotating speeds in the ideal rotating speed-noise relation list correspond to noise range values one by one;
step 2, detecting a real-time backpressure value corresponding to the smoke exhaust channel in the operating state of the range hood;
step 3, detecting a real-time external noise value corresponding to the condition that the air inlet under the smoke baffle is in the operating state of the range hood;
step 4, acquiring a real-time operation noise value of the fan system corresponding to the fan system in the stable operation state of the range hood;
step 5, detecting a real-time temperature value within a preset distance range below the range hood in the running state;
step 6, acquiring a corresponding real-time operation rotating speed value of the range hood in an operation state;
step 7, obtaining the real value of the running noise of the range hood according to the detected real-time external noise value and the real-time running noise value of the fan system;
step 8, judging whether to adjust the current operation rotating speed of the range hood according to the real-time backpressure value of the smoke exhaust channel and the real-time temperature value:
when the real-time backpressure value of the smoke exhaust channel is larger than a preset backpressure threshold value and the real-time temperature value reaches a preset temperature threshold value, turning to step 9; otherwise, the current operation rotating speed of the range hood is not adjusted;
and 9, adjusting the current operating rotating speed of the range hood to the operating rotating speed corresponding to the actual operating noise value in the ideal rotating speed-noise relation list according to the actual operating noise value of the range hood and the ideal rotating speed-noise relation list.
When the range hood executes the intelligent adjusting method, the real value of the running noise representing the real noise condition of the range hood is accurately obtained by detecting the real-time external noise value at the air inlet of the range hood and the real-time running noise value when the range hood stably runs; in addition, when a user is determined to be in the lower part of the range hood according to the real-time backpressure value of the smoke exhaust channel and the detection condition of the temperature in the range of the preset distance below the range hood, the current running rotating speed of the range hood is adjusted to the running rotating speed corresponding to the real value of the running noise in the ideal rotating speed-noise relation list, so that the rotating speed of the range hood during running can be adjusted along with the generated noise, the noise of the range hood during running is adjusted to the noise range in the ideal state, and the use feeling of the user is prevented from being influenced.
Specifically, in the intelligent adjusting method of the present invention, the real value of the operating noise of the range hood is the sum of the real-time external noise value and the real-time operating noise value of the fan system, which are weighted respectively; wherein the real value of the operating Noise of the range hood is marked as Noise (t), and the real-time external Noise value is marked as NoiseOuter cover(t), marking the real-time operation Noise value of the fan system as NoiseInner part(t)：
Noise(t)＝a·NoiseOuter cover(t)+b·NoiseInner part(t)，t>0; a is a weighting coefficient corresponding to the real-time external noise value, b is a weighting coefficient corresponding to the real-time operation noise value of the fan system, and 0<a<1，0<b<1。
Preferably, the weighting coefficient a is 0.74, and the weighting coefficient b is 0.26.
The setting number and the preset distance range of the preset backpressure threshold can be adjusted according to needs. In the invention, the preset backpressure threshold is set to be 130Pa, and the preset distance range is 800 mm.
The determination as to whether the range hood of the present invention is in the stable operation state may have various determination manners. As one of the determining modes, the stable operation state of the range hood is the corresponding operation state when the range hood is started to operate for 5-25 s. For example, the range hood may also be preferably started to operate for 20 s.
In addition, aiming at the step 6, the acquisition of the real-time running rotating speed value corresponding to the running state of the range hood comprises the following steps:
step b1, when the detected real-time temperature value reaches a preset temperature threshold value, switching to step b 2; otherwise, turning to the step 2;
step b2, detecting the current operation rotating speed value of the range hood;
step b3, when the current operation rotating speed value is the rotating speed value corresponding to any gear of the range hood, adding one to the state operation times of the range hood under any gear; otherwise, go to step b 2;
step b4, when the state running times accumulated value corresponding to any gear of the range hood reaches a preset accumulated threshold value, taking the running rotating speed corresponding to any gear as the real-time running rotating speed value corresponding to the range hood in the running state; otherwise, go to step 2.
The technical scheme adopted by the invention for solving the second technical problem is as follows: on the basis of the first intelligent noise adjusting method for the range hood, the real-time operation noise value of the fan system is obtained in the following steps a 1-a 3. Specifically, the steps a1 to a3 are as follows:
a1, dividing a fan system of the range hood into noise detection areas with preset number;
step a2, collecting real-time operation noise values of each noise detection area;
step a3, weighting the collected real-time operation noise values of the noise detection areas, summing the weighted real-time operation noise values, and taking the summed value as the real-time operation noise value of the fan system.
After the method is executed, the internal noise of the range hood can be accurately acquired, and data support is provided for obtaining the real noise value of the range hood subsequently. It should be noted here that, the fan system of the range hood is subjected to the noise detection area partition treatment, so that the situation that the detected noise value cannot completely and truly reflect the noise level of the current fan system due to the random and ambiguous arrangement position of the traditional noise detection sensor can be effectively avoided, and the real situation of the noise in the fan system of the range hood can be more comprehensively reflected after the noise detection area partition treatment.
Specifically, the fan system of the range hood is divided into six noise detection areas; wherein:
the input end of the first noise detection area is the volute tongue of the fan system, and the output end of the first noise detection area is the position which rotates clockwise by 45 degrees along the volute tongue;
the input end of the second noise detection area is connected with the output end of the first noise detection area, and the output end of the second noise detection area is positioned at a position which is rotated clockwise by 65 degrees along the input end of the second noise detection area;
the input end of the third noise detection area is connected with the output end of the second noise detection area, and the output end of the third noise detection area is positioned at a position which rotates clockwise by 45 degrees along the input end of the third noise detection area;
the input end of the fourth noise detection area is connected with the output end of the third noise detection area, and the output end of the fourth noise detection area is positioned at a position which is rotated by 70 degrees clockwise along the input end of the fourth noise detection area;
the input end of the fifth noise detection area is connected with the output end of the fourth noise detection area, and the output end of the fifth noise detection area is positioned at a position which is rotated by 80 degrees clockwise along the input end of the fifth noise detection area;
the sixth noise detection zone is the remainder of the fan system after the first five noise detection zones have been removed.
Certainly, in order to realize the interaction effect between the range hood and the user, the intelligent adjusting method for the noise of the range hood of the invention further comprises the following steps: sending the running state information of the range hood to prompt a user, and adjusting the running rotating speed of the range hood according to the selection of the user.
Compared with the prior art, the invention has the advantages that:
firstly, the intelligent regulation method of the range hood noise of the invention accurately obtains the real value of the operation noise representing the real noise condition of the range hood by detecting the real-time external noise value at the air inlet of the range hood and the real-time operation noise value when the range hood stably operates in a mode of combining the internal noise and the external noise of the range hood; in addition, when a user is determined to be in the lower part of the range hood according to the real-time backpressure value of the smoke exhaust channel and the detection condition of the temperature in the range of the preset distance below the range hood, the current running rotating speed of the range hood is adjusted to the running rotating speed corresponding to the real value of the running noise in the ideal rotating speed-noise relation list, so that the rotating speed of the range hood during running can be adjusted along with the noise generated by the range hood, the noise of the range hood during running is adjusted to the noise range in the ideal state, and the use feeling of the user is prevented from being influenced;
secondly, by carrying out noise detection area partition processing on a fan system of the range hood, the problem that the detected noise value cannot completely and truly reflect the noise level of the current fan system due to random and indefinite arrangement positions of the traditional noise detection sensors can be effectively avoided, and the noise condition in the fan system of the range hood can be more comprehensively reflected after the noise detection area partition processing is carried out, so that the real-time running rotating speed of the range hood can be more accurately adjusted to the corresponding rotating speed under the ideal running state of the range hood, and the running noise is reduced.
Drawings
Fig. 1 is a flow chart of an intelligent noise adjusting method for a range hood according to an embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1, the present embodiment provides an intelligent method for adjusting noise of a range hood, which specifically includes the following steps 1 to 9:
step 1, pre-establishing an ideal rotating speed-noise relation list between the corresponding operating rotating speed and noise range value of the range hood in an ideal operating state; wherein, the operation rotating speed in the ideal rotating speed-noise relation list corresponds to the noise range value one by one; the ideal operation state refers to the operation state of the range hood under the rated power; generally, the noise generated when the range hood operates under rated power cannot cause adverse effects on the experience effect of a user;
for example, assume that the operating speed value of the range hood is labeled N in the established list of ideal speed-noise relationshipsi，i∈[1,M]M is the number of the operating rotating speeds of the range hood(ii) a The noise range value corresponding to the operation speed value is marked as SiWherein S isi＝(noisei, lower limit,noisei, upper limit)；noisei, lower limitRepresents the noise range value SiLower limit noise value ofi, upper limitnoisei, lower limitRepresents the noise range value SiUpper limit noise value of (d);
step 2, detecting a real-time backpressure value corresponding to the smoke exhaust channel in the operating state of the range hood; wherein, the real-time backpressure value of the smoke exhaust channel is set as PBack of body(t)，t>0；
Step 3, detecting a real-time external noise value corresponding to the condition that the air inlet under the smoke baffle is in the operating state of the range hood; wherein the real-time external Noise value is set to be marked NoiseOuter cover(t)，t>0；
Step 4, acquiring a real-time operation noise value of the fan system corresponding to the fan system in the stable operation state of the range hood; setting the real-time operation Noise value of the fan system to be marked as NoiseInner part(t)，t>0; for example, in the embodiment, the stable operation state of the range hood is an operation state corresponding to the range hood starting operation for 5s to 25s, and preferably an operation state corresponding to the range hood starting operation for 20 s;
the acquisition of the real-time operation noise value of the fan system can be obtained by various measures; in this embodiment, the real-time operation noise value of the fan system is obtained by the following steps a1 to a 3:
a1, dividing a fan system of the range hood into noise detection areas with preset number; wherein, the distribution about the noise detection area is as follows:
the preset number in the embodiment is six, namely, a fan system of the range hood is divided into six noise detection areas; the distribution of the six noise detection areas is as follows:
the input end of the first noise detection area is the volute tongue of the fan system, and the output end of the first noise detection area is the position which rotates clockwise by 45 degrees along the volute tongue;
the input end of the second noise detection area is connected with the output end of the first noise detection area, and the output end of the second noise detection area is positioned at a position which is rotated by 65 degrees clockwise along the input end of the second noise detection area;
the input end of a third noise detection area is connected with the output end of the second noise detection area, and the output end of the third noise detection area is positioned at a position which rotates clockwise by 45 degrees along the input end of the third noise detection area;
the input end of a fourth noise detection area is connected with the output end of the third noise detection area, and the output end of the fourth noise detection area is positioned at a position which rotates clockwise by 70 degrees along the input end of the fourth noise detection area;
the input end of a fifth noise detection area is connected with the output end of the fourth noise detection area, and the output end of the fifth noise detection area is positioned at a position which is rotated by 80 degrees clockwise along the input end of the fifth noise detection area;
the sixth noise detection zone is the remainder of the fan system after the first five noise detection zones have been removed.
Step a2, collecting real-time operation noise values of each noise detection area;
step a3, weighting the collected real-time operation noise values of the noise detection areas, summing the weighted values, and taking the summed value as the real-time operation noise value of the fan system. It should be noted here that, the fan system of the range hood is subjected to the noise detection area partition treatment, so that the situation that the detected noise value cannot completely and truly reflect the noise level of the current fan system due to the random and ambiguous arrangement position of the traditional noise detection sensor can be effectively avoided, and the noise condition in the fan system of the range hood can be more comprehensively reflected after the noise detection area partition treatment.
Step 5, detecting a real-time temperature value within a preset distance range below the range hood in the running state; wherein, the present embodiment obtains the real-time temperature value by using an infrared detection method,
setting the real-time temperature value as Temp (t), t > 0; for example, the preset distance range here is set to 800 mm;
step 6, acquiring a corresponding real-time operation rotating speed value of the range hood in an operation state; wherein, the real-time running rotating speed value obtained here is marked as N (t), t is greater than 0; specifically, in this embodiment, the obtaining of the real-time operation rotation speed value corresponding to the operation state of the range hood includes the following steps b 1-b 4:
step b1, when the detected real-time temperature value reaches a preset temperature threshold value, switching to step b 2; otherwise, turning to the step 2;
step b2, detecting the current operation rotating speed value of the range hood;
step b3, when the current operation rotating speed value is the rotating speed value corresponding to any gear of the range hood, adding one to the state operation times of the range hood under any gear; otherwise, go to step b 2;
step b4, when the state running times accumulated value corresponding to any gear of the range hood reaches a preset accumulated threshold value, taking the running rotating speed corresponding to any gear as the real-time running rotating speed value corresponding to the range hood in the running state; otherwise, go to step 2.
Step 7, obtaining the real value of the running noise of the range hood according to the detected real-time external noise value and the real-time running noise value of the fan system; the real value of the running noise of the range hood is the sum of the real-time external noise value and the real-time running noise value of the fan system which are respectively subjected to weighting processing; the real value of the operating Noise of the range hood is marked as Noise (t), and the real-time external Noise value is marked as NoiseOuter cover(t), marking the real-time operation Noise value of the fan system as NoiseInner part(t)：
Noise(t)＝a·NoiseOuter cover(t)+b·NoiseInner part(t)，t>0; a is the real-time external Noise value NoiseOuter cover(t) corresponding weighting coefficient, b is real-time running Noise value Noise of the fan systemInner part(t) corresponding weighting factor, 0<a<1，0<b<1. For example, it is preferable that the weighting coefficient a be 0.74 and the weighting coefficient b be 0.26;
step 8, according to the real-time backpressure value P of the smoke exhaust channelBack of body(t) and a real-time temperature value Temp (t), and judging whether to adjust the current operating rotating speed of the range hood:
when the real-time backpressure value P of the smoke exhaust channelBack of body(t) when the real-time temperature value Temp (t) is greater than the preset backpressure threshold value P and reaches the preset temperature threshold value Temp, the backpressure value of the current smoke exhaust channel is indicated to reach the upper limit at the moment, and a user is cooking, smoke exhaust is required to be preferentially performed at present, and the step 9 is carried out; otherwise, the backpressure value in the current smoke exhaust channel is indicated to have an adjustable range, the smoke exhaust can be carried out by using any rotating speed, and the current operating rotating speed N (t) of the range hood is not adjusted if a user does not carry out cooking operation; the setting value of the preset backpressure threshold value can be adjusted according to the requirement; this embodiment sets the preset back pressure threshold P to 130 Pa;
and 9, adjusting the current operation rotating speed of the range hood to the operation rotating speed corresponding to the operation noise real value in the ideal rotating speed-noise relation list according to the operation noise real value noise (t) of the range hood and the ideal rotating speed-noise relation list.
In particular, the true value noise (t) epsilon S of the operation noise of the range hood is assumed3I.e. noise3, lower limit≤Noise(t)≤noise3, upper limitThen the current operation rotating speed of the range hood is adjusted to the noise range value S3Corresponding operating speed N3。
When the range hood executes the intelligent adjusting method of the embodiment, the real value of the running noise representing the real noise condition of the range hood is accurately obtained by detecting the real-time external noise value at the air inlet of the range hood and the real-time running noise value when the range hood stably runs; in addition, when a user is determined to be in the lower part of the range hood according to the real-time backpressure value of the smoke exhaust channel and the detection condition of the temperature in the range of the preset distance below the range hood, the current running rotating speed of the range hood is adjusted to the running rotating speed corresponding to the real value of the running noise in the ideal rotating speed-noise relation list, so that the rotating speed of the range hood during running can be adjusted along with the generated noise, the noise of the range hood during running is adjusted to the noise range in the ideal state, and the use feeling of the user is prevented from being influenced.
Certainly, in order to realize the interaction effect between the range hood and the user, the intelligent adjusting method for the noise of the range hood of the invention further comprises the following steps: sending the running state information of the range hood to prompt a user, and adjusting the running rotating speed of the range hood according to the selection of the user.
Claims (9)
1. An intelligent noise adjusting method for a range hood is characterized by comprising the following steps:
step 1, pre-establishing an ideal rotating speed-noise relation list between the corresponding operating rotating speed and noise range value of the range hood in an ideal operating state; the operation rotating speeds in the ideal rotating speed-noise relation list correspond to noise range values one by one;
step 2, detecting a real-time backpressure value corresponding to the smoke exhaust channel in the operating state of the range hood;
step 3, detecting a real-time external noise value corresponding to the condition that the air inlet under the smoke baffle is in the operating state of the range hood;
step 4, acquiring a real-time operation noise value of the fan system corresponding to the fan system in the stable operation state of the range hood;
step 5, detecting a real-time temperature value within a preset distance range below the range hood in the running state;
step 6, acquiring a corresponding real-time operation rotating speed value of the range hood in an operation state;
step 7, obtaining the real value of the running noise of the range hood according to the detected real-time external noise value and the real-time running noise value of the fan system;
step 8, judging whether to adjust the current operation rotating speed of the range hood according to the real-time backpressure value of the smoke exhaust channel and the real-time temperature value:
when the real-time backpressure value of the smoke exhaust channel is larger than a preset backpressure threshold value and the real-time temperature value reaches a preset temperature threshold value, turning to step 9; otherwise, the current operation rotating speed of the range hood is not adjusted;
and 9, adjusting the current operating rotating speed of the range hood to the operating rotating speed corresponding to the actual operating noise value in the ideal rotating speed-noise relation list according to the actual operating noise value of the range hood and the ideal rotating speed-noise relation list.
2. The intelligent method for adjusting the noise of the range hood according to claim 1, wherein the real value of the operating noise of the range hood is the sum of the real-time external noise value and the real-time operating noise value of the fan system, which are weighted respectively; wherein the real value of the operating Noise of the range hood is marked as Noise (t), and the real-time external Noise value is marked as NoiseOuter cover(t), marking the real-time operation Noise value of the fan system as NoiseInner part(t)：
Noise(t)＝a·NoiseOuter cover(t)+b·NoiseInner part(t)，t>0; a is a weighting coefficient corresponding to the real-time external noise value, b is a weighting coefficient corresponding to the real-time operation noise value of the fan system, and 0<a<1，0<b<1。
3. The intelligent noise adjusting method for the range hood according to claim 1, wherein the obtaining of the real-time operation noise value of the fan system comprises the following steps a 1-a 3:
a1, dividing a fan system of the range hood into noise detection areas with preset number;
step a2, collecting real-time operation noise values of each noise detection area;
step a3, weighting the collected real-time operation noise values of the noise detection areas, summing the weighted real-time operation noise values, and taking the summed value as the real-time operation noise value of the fan system.
4. The intelligent noise adjusting method for the range hood according to claim 1, wherein the obtaining of the real-time operation rotating speed value corresponding to the operating state of the range hood comprises the following steps:
step b1, when the detected real-time temperature value reaches a preset temperature threshold value, switching to step b 2; otherwise, turning to the step 2;
step b2, detecting the current operation rotating speed value of the range hood;
step b3, when the current operation rotating speed value is the rotating speed value corresponding to any gear of the range hood, adding one to the state operation times of the range hood under any gear; otherwise, go to step b 2;
step b4, when the state running times accumulated value corresponding to any gear of the range hood reaches a preset accumulated threshold value, taking the running rotating speed corresponding to any gear as the real-time running rotating speed value corresponding to the range hood in the running state; otherwise, go to step 2.
5. The intelligent noise adjusting method for the range hood according to any one of claims 1 to 4, further comprising: sending the running state information of the range hood to prompt a user, and adjusting the running rotating speed of the range hood according to the selection of the user.
6. The intelligent noise adjusting method for range hoods according to any one of claims 1 to 4, wherein the preset back pressure threshold is 130Pa, and the preset distance range is 800 mm.
7. The intelligent noise adjusting method for a range hood according to claim 3, wherein the fan system of the range hood has six noise detection areas; wherein:
the input end of the first noise detection area is the volute tongue of the fan system, and the output end of the first noise detection area is the position which rotates clockwise by 45 degrees along the volute tongue;
the input end of the second noise detection area is connected with the output end of the first noise detection area, and the output end of the second noise detection area is positioned at a position which is rotated clockwise by 65 degrees along the input end of the second noise detection area;
the input end of the third noise detection area is connected with the output end of the second noise detection area, and the output end of the third noise detection area is positioned at a position which rotates clockwise by 45 degrees along the input end of the third noise detection area;
the input end of the fourth noise detection area is connected with the output end of the third noise detection area, and the output end of the fourth noise detection area is positioned at a position which is rotated by 70 degrees clockwise along the input end of the fourth noise detection area;
the input end of the fifth noise detection area is connected with the output end of the fourth noise detection area, and the output end of the fifth noise detection area is positioned at a position which is rotated by 80 degrees clockwise along the input end of the fifth noise detection area;
the sixth noise detection zone is the remainder of the fan system after the first five noise detection zones have been removed.
8. The intelligent noise adjusting method for the range hood according to claim 1, wherein the stable operation state of the range hood is an operation state corresponding to the range hood when the range hood is started to operate for 5s to 25 s.
9. The intelligent noise adjusting method for a range hood according to claim 8, wherein the stable operation state of the range hood is an operation state corresponding to 20s of starting operation of the range hood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010000627.2A CN111043637B (en) | 2020-01-02 | 2020-01-02 | Intelligent adjusting method for noise of range hood |
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| CN111578337A (en) * | 2020-05-25 | 2020-08-25 | 珠海格力电器股份有限公司 | Noise control method and device for electrical equipment and electrical equipment |
| CN112361404A (en) * | 2020-10-27 | 2021-02-12 | 宁波方太厨具有限公司 | Noise reduction method and system for range hood and range hood with noise reduction system |
| CN113339861A (en) * | 2021-06-04 | 2021-09-03 | 广东万家乐燃气具有限公司 | Noise detection method for range hood |
| CN114034067A (en) * | 2021-11-12 | 2022-02-11 | 宁波方太厨具有限公司 | Control method of range hood and range hood for implementing same |
| CN114409112A (en) * | 2022-01-10 | 2022-04-29 | 珠海格力电器股份有限公司 | Water purifier control method and device and water purifier |
| CN114923208A (en) * | 2022-05-27 | 2022-08-19 | 宁波方太厨具有限公司 | Operating method of range hood and range hood |
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