CN107676919A - A kind of air-conditioner set method for noise reduction control - Google Patents
A kind of air-conditioner set method for noise reduction control Download PDFInfo
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- CN107676919A CN107676919A CN201710639444.3A CN201710639444A CN107676919A CN 107676919 A CN107676919 A CN 107676919A CN 201710639444 A CN201710639444 A CN 201710639444A CN 107676919 A CN107676919 A CN 107676919A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a kind of air-conditioner set method for noise reduction control, judges whether sub-load operates unit；If so, then obtain the current level of noise of compressor and the current level of noise of outer blower fan；Judge the difference of two levels of noise whether in setting difference range；If so, then unit continues to run with according to current state；If it is not, then adjust compressor rotary speed and outer rotation speed of fan using the average value of the current level of noise of compressor and the current level of noise of outer blower fan as target noise value；Then judge whether unit reaches target fan-out capability；If it is not, compressor rotary speed and outer rotation speed of fan are then adjusted according to target fan-out capability, until unit reaches target fan-out capability；If so, then reacquire the current level of noise of compressor and the current level of noise of outer blower fan, the current level of noise of compressor is rejudged with the difference of the current level of noise of outer blower fan whether in setting range.Therefore, the present invention realizes the optimization of outdoor unit noise on the premise of unit reaches target fan-out capability.
Description
Technical field
The invention belongs to air-conditioning technical field, is to be related to a kind of air-conditioner set method for noise reduction control specifically.
Background technology
With social development and the continuous improvement of living standards of the people, multi-connected machine is made with its excellent energy-saving effect and installation
The characteristics of with flexible facility, more and more welcomed by the people.In today that multi-connected machine product is increasingly popularized, user is to multi-joint
The usage experience of machine product requires also more and more higher, is no longer limited to refrigeration, heating effect and indoor set operation noise
It is required that and to outdoor unit run NOISE ON ENVIRONMENT influence also increasingly pay attention to, particularly run noise directly influence neighbour
When occupying, it is easy to cause neighbourhood's dispute.Use for multi-connected machine product, temperature it is higher and than it is relatively low when general meeting
The refrigeration of larger load or full load（Or heating）Operation, and now the neighbours of surrounding typically can fasten door and window, unit operation
Noise it is influenceed it is smaller；And not too cold or not too hot when, unit is typically all sub-load operating, now all
The neighbours enclosed are likely to opening door and window and breathed freely to indoor, if at this time the operation noise of unit is without optimized control
Processing, it is influenceed it is just very big, particularly when in the dead of night this influence can become more prominent.Therefore, in mesh
Under preceding market environment, noise when improving multi-connected machine outdoor machine part load operation seems extremely heavy to lifting Consumer's Experience
Will.
In face of above-mentioned this problem, the following three kinds of methods of generally use：
Method one, increase cut-off, reduce influence of the noise to surrounding neighbours of unit operation.
Increase the measure of cut-off, have certain effect to reducing influence of the unit operation noise to neighbours, but be not basic
The method solved the problems, such as.Its major defect is：Need to increase a no small expense to user, and outdoor unit week can not be determined
Whether enclose has sufficient space installation cut-off.
Method two, when receiving customer complaint, technical staff scene is modified to the software of unit, reduce unit fortune
Rotation speed of fan and compressor rotary speed during row.
The measure of field modification control software, unit operation noise can also be reduced, but major defect is：Pass through scene
The rotation speed of fan and compressor rotary speed that control software is changed when reducing unit operation, although noise when sub-load operates can be with
Effectively reduce, but unit refrigeration, heating capacity when big load and full load are run will be caused to be severely limited, it is difficult to be full
The refrigeration of sufficient user, heating effect requirement.
Method three, night Jing Yin operating setting is carried out to unit, reduce wind during unit operation when operating at night automatically
Machine rotating speed and compressor rotary speed.
The mode of night Jing Yin operating is set, is a kind of relatively good noise reduction measure in current multi-connected machine product, but its
Major defect is：Daytime and night according only to detection are distinguished, and reduce rotation speed of fan and compressor of the unit when running at night
Rotating speed, it is impossible to make a distinction to the operating load demand of unit, accurately controlled, the usage experience improvement to user has larger
Limitation.For example during the day, unit will not enter night Jing Yin operating, even sub-load operates, outdoor unit is not yet
Lower noise control can be carried out, the problem of still causing noise effect surrounding neighbours；When at night, unit can be automatically into night
Between Jing Yin operating, even if unit needs full load operation, outdoor unit will not also improve fan-out capability again, it is difficult to meet the system of user
Cold, heating effect requirement, although at this time surrounding neighbours can typically close door and window, outdoor unit operation noise influences very little to it.
The content of the invention
The invention provides a kind of air-conditioner set method for noise reduction control, in unit operation at part load, reaches in unit
On the premise of target fan-out capability, outdoor unit noise is reduced.
In order to solve the above technical problems, the present invention is achieved using following technical proposals：
A kind of air-conditioner set method for noise reduction control, methods described include：
（1）Judge whether sub-load operates unit；
If so, then perform step（2）；
（2）The current level of noise of compressor and the current level of noise of outer blower fan are obtained, and judges whether the difference of two levels of noise is setting
Determine in difference range；
If it is not, then perform step（3）；
（3）Turn the average value of the current level of noise of compressor and the current level of noise of outer blower fan as target noise value adjustment compressor
Fast and outer rotation speed of fan；
（4）Judge whether unit reaches target fan-out capability；
If so, then return to step（2）；
If it is not, then perform step（5）；
（5）Compressor rotary speed and outer rotation speed of fan, return to step are adjusted according to target fan-out capability（4）.
Further, it is described to judge that whether sub-load operates unit, specifically includes：Reach target fan-out capability in unit
When, judge whether compressor rotary speed reaches compressor maximum setting speed；If it is not, then unit sub-load operates.
Further, it is described to judge that whether sub-load operates unit, specifically includes：Reach target output energy in unit
During power, judge whether outer rotation speed of fan reaches outer blower fan maximum setting speed；If it is not, then unit sub-load operates.
Further, it is described to judge that whether sub-load operates unit, specifically includes：When unit is multi-connected machine unit
When, judge whether all indoor sets all start；If it is not, then unit sub-load operates.
Further, it is described to judge whether unit reaches target fan-out capability, specifically include：
In cooling condition, evaporating pressure is obtained, judges whether evaporating pressure reaches target evaporating pressure；If so, then unit reaches
To target fan-out capability；In heating condition, condensing pressure is obtained, judges whether condensing pressure reaches target condensing pressure；If
It is that then unit reaches target fan-out capability.
Preferably, it is described to judge whether unit reaches target fan-out capability, specifically include：
Environment temperature is obtained, judges whether environment temperature reaches target environment temperature；If so, then unit reaches target output energy
Power.
Further, the acquisition current level of noise of compressor and the current level of noise of outer blower fan, are specifically included：
The current rotating speed of compressor is obtained, the pressure according to corresponding to default compressor rotary speed-level of noise corresponding table obtains current rotating speed
The current level of noise of contracting machine；The outer current rotating speed of blower fan is obtained, is obtained according to default outer rotation speed of fan-noise figure corresponding table and works as forward
The outer current level of noise of blower fan corresponding to speed.
Further, the step（3）Specifically include：
Judge whether to perform step first（3）,
If so, compressor rotary speed is then adjusted according to target noise value；
If it is not, then judge that last time performs step（3）When whether adjust compressor rotary speed；If so, then adjusted according to target noise value
Outer rotation speed of fan；If it is not, compressor rotary speed is then adjusted according to target noise value.
Further, the step（5）Specifically include：
Judge whether to perform step first（5）,
If so, compressor rotary speed is then adjusted according to target fan-out capability；
If it is not, then judge that last time performs step（5）When whether adjust compressor rotary speed；If so, then adjusted according to target fan-out capability
Whole outer rotation speed of fan；If it is not, compressor rotary speed is then adjusted according to target fan-out capability.
Preferably, for the difference range that sets as [- k ,+k], k is to set deviation, k >=0.
Compared with prior art, the advantages and positive effects of the present invention are：The air-conditioner set method for noise reduction control of the present invention,
Judge whether sub-load operates unit；If so, then obtain the current level of noise of compressor and the current level of noise of outer blower fan；Judge two
Whether the difference of individual level of noise is in setting difference range；If so, then unit continues to run with according to current state；If it is not, then will
The average value of the current level of noise of compressor and the current level of noise of outer blower fan adjusts compressor rotary speed and exogenous wind as target noise value
Machine rotating speed；Then judge whether unit reaches target fan-out capability；If it is not, compressor rotary speed is then adjusted according to target fan-out capability
With outer rotation speed of fan, until unit reaches target fan-out capability；If so, then reacquire the current level of noise of compressor and outer blower fan
Current level of noise, the difference of the current level of noise of compressor and the current level of noise of outer blower fan is rejudged whether in setting range.
Therefore, method for noise reduction control of the invention, when unit sub-load operates, compressor rotary speed and outer rotation speed of fan is adjusted, is made
The difference for obtaining the current level of noise of compressor and the current level of noise of outer blower fan is being set in difference range, realizes that outdoor unit noise is optimal
Change, while cause unit to reach target fan-out capability；So as on the premise of unit reaches target fan-out capability, realize outdoor
The optimization of machine noise, outdoor unit noise is reduced, improves user experience.
After the embodiment of the present invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear
Chu.
Brief description of the drawings
Fig. 1 is the flow chart of one embodiment of air-conditioner set method for noise reduction control proposed by the invention；
Fig. 2 is the compressor rotary speed and noise figure graph of a relation of air-conditioner set method for noise reduction control proposed by the invention；
Fig. 3 is the outer rotation speed of fan and noise figure graph of a relation of air-conditioner set method for noise reduction control proposed by the invention；
Fig. 4 is two noise source superimposed curves.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below with reference to drawings and examples,
The present invention is described in further detail.
The present invention proposes a kind of parameter such as air-conditioner set method for noise reduction control, detection compressor rotary speed, outer rotation speed of fan,
In real time by coupling regulation compressor rotary speed and outer rotation speed of fan, in unit operation at part load, realize that the operation of unit is made an uproar
Sound optimizes, while ensures the cooling or heating effect of unit to greatest extent.
The air-conditioner set of the present embodiment includes outdoor unit and an at least indoor set, and outdoor unit includes a frequency-changeable compressor
With blower fan outside a multi-change speed.Compressor and outer blower fan are the basic noise sources of outdoor unit operation.
Two or more individual sources act on certain point, produce the superposition of noise.Acoustic energy can with algebraic addition, if
The acoustical power of two sound sources is respectively W1And W2, then total acoustic power WAlways=W1+W2.And two sound sources are I in the sound intensity of certain point1With
I2When, total sound intensity after superposition: IAlways= I1+I2.But acoustic pressure can not be directly added.
Sound pressure level Superposition Formula is：LP=10lg[10(Lp1/10)+10(Lp2/10)]；
Wherein, LPFor overall sound pressure level, unit dB；LP1For sound source 1（Such as compressor）Sound pressure level, unit dB；LP2For sound source
2（Such as outer blower fan）Sound pressure level, unit dB.
If LP1=LP2, i.e., the sound pressure level of two sound sources is equal, then overall sound pressure level：
LP =LP1+10lg2≈LP1+3(dB)。
That is, when two sound source sound pressure levels for acting on certain point are equal, the overall sound pressure level that it is synthesized is than one
The sound pressure level increase 3dB of sound source.
When the sound pressure level of two sound sources is unequal, the overall sound pressure level calculated according to above-mentioned formula is more than two sound pressure levels
Overall sound pressure level when equal.
Value can also be looked into using Fig. 4 to calculate overall sound pressure level.Method is：If LP1> LP2, with LP1- LP2Value looks into Fig. 4 and obtains Δ
LP, then overall sound pressure level LP is total=LP1+ΔLP.As shown in Figure 4, L is worked asP1And LP2When equal, overall sound pressure level LP is totalIt is minimum.Fig. 4 is existing skill
Art, specifically repeat no more.
Noise during due to compressor operating and its rotating speed positive correlation, noise and its rotating speed positive during outer fan operation
Close, the noise of outdoor unit operation is the superposition of compressor and outer fan operation noise.
In order that the performance of unit, noise and cost etc. reach most reasonable level, when designing compressor and outer blower fan, need
By the level of noise block design of the level of noise section of the full range of speeds of compressor and the full range of speeds of outer blower fan into connecting as far as possible
Closely, because the overall noise levels of unit operation depend on the larger noise source of level of noise among both, if both levels of noise
Section difference is excessive, otherwise it is that the big part design of level of noise is unreasonable, otherwise it is that the small part of level of noise belongs to excessive
Design, this noise and cost level to complete machine are very unfavorable.That big noise source of noise figure serves conclusive effect,
The small noise source of noise figure and its overlaying influence are smaller, then reducing the big noise source of noise will play very to the noise of complete machine
Crucial effect, until the big noise source of noise is dropped near the identical decibel value of the noise source small with noise.
When air-conditioner set sub-load operates, compressor rotary speed rise and outer rotation speed of fan raise the fortune that can lift unit
Row effect, but optimal operational effect and noise level then need compressor and outer blower fan to cooperate with operating to realize.
By sound pressure level superposition calculation formula, meeting operational effect（Cooling or heating effect）In the case of, exogenous wind
Level of noise caused by machine is identical with level of noise caused by compressor（Or difference very little）When, the operation noise of outdoor unit just connects
It is bordering on optimum state.
The air-conditioner set method for noise reduction control of the present embodiment, mainly comprises the steps, shown in Figure 1.
Step S0：Unit operation.
Unit normal operation.
Step S1：Judge whether sub-load operates unit.
Because ambient temperature it is higher and than it is relatively low when, the general oepration at full load of unit is now preferential to meet system
Cold heating effect, do not consider that outdoor unit runs noise；Ambient temperature reason is additionally, since, now door and window closes, to surrounding neighbours
Influence smaller.Therefore, when unit full load is run, unit is according to current state normal operation.Only when unit part
During load running, step S2 is just performed.
Judge whether the method for sub-load operating includes following three to unit.
Method one, when unit reaches target fan-out capability, judge whether compressor rotary speed reaches the maximum setting of compressor
Rotating speed Rcmax.
If it is not, then illustrate that unit sub-load operates；If so, then illustrate unit running at full capacity.
Judge whether sub-load operates unit, and method is simple, is easy to implement, accuracy of judgement by compressor rotary speed.
Method two, when unit reaches target fan-out capability, judge whether outer rotation speed of fan reaches that outer blower fan is maximum to be set
Rotating speed Rfmax.
If it is not, then illustrate that unit sub-load operates；If so, then illustrate unit running at full capacity.
Judge whether sub-load operates unit, and method is simple, is easy to implement, accuracy of judgement by outer rotation speed of fan.
Method three, when air-conditioner set is multi-connected machine, judge whether all indoor sets all start.
If it is not, then illustrate that unit sub-load operates；If so, then illustrate unit running at full capacity.
Judge whether sub-load operates multi-connected machine unit, and method is simple, is easy to by the way that whether indoor set all starts
Realize.
In the present embodiment, unit reaches target fan-out capability, i.e. indoor set reaches object run effect, as indoor set reaches
To cooling or heating effect.
Step S2：Obtain the current level of noise of compressor and the current level of noise of outer blower fan.
Compressor is in the range of minimum setting speed Rcmin to maximum setting speed Rcmax, i.e. the full range of speeds of compressor
Interior, corresponding operation noise curve is shown in Figure 2.In fig. 2, the operation level of noise of the full range of speeds of compressor（Sound pressure level）Can
To be obtained by experiment test.
Outer blower fan is in the range of minimum setting speed Rfmin to maximum setting speed Rfmax, i.e., the outer full range of speeds of blower fan
Interior, corresponding operation noise curve is shown in Figure 3.In figure 3, the operation level of noise of the full range of speeds of outer blower fan（Sound pressure level）Can
To be obtained by experiment test.
Compressor rotary speed-level of noise corresponding table is made in the relation of compressor rotary speed in Fig. 2 and level of noise, unit is arrived in storage
In the memory of control panel, it can be transferred at any time in unit running process for realizing the optimization control of operational effect and noise
System.
Outer rotation speed of fan-level of noise corresponding table is made in the relation of Fig. 3 China and foreign countries rotation speed of fan and level of noise, unit is arrived in storage
In the memory of control panel, it can be transferred at any time in unit running process for realizing the optimization control of operational effect and noise
System.
Therefore, in the present embodiment, the acquisition current level of noise of compressor and the current level of noise of outer blower fan, specific bag
Include：The current rotating speed of compressor is obtained, according to default compressor rotary speed-level of noise corresponding table, obtains the current rotating speed pair of compressor
The current level of noise of compressor answered；The outer current rotating speed of blower fan is obtained, according to default outer rotation speed of fan-noise figure corresponding table, is obtained
Take the outer current level of noise of blower fan corresponding to the current rotating speed of outer blower fan.
The current level of noise of compressor and the current level of noise of outer blower fan are obtained by inquiring about default corresponding table, it is simple and convenient,
And accurate level of noise can be obtained.
Step S3：Judge the difference of two levels of noise whether in setting difference range.
The difference of the current level of noise of compressor and the current level of noise of outer blower fan is calculated, judges difference whether in setting difference model
In enclosing.
If it is not, explanation difference is larger, after two level of noise superpositions, total level of noise is larger, i.e. outdoor unit noise is larger, performs
Step S4.
If so, explanation difference is smaller, after two level of noise superpositions, total level of noise is smaller, i.e. outdoor unit noise is smaller, performs
Step S7.
In the present embodiment, difference range is set as [- k ,+k], and k is to set deviation, k >=0.
By sound pressure level superposition calculation formula, level of noise caused by outer blower fan and level of noise phase caused by compressor
Meanwhile when that is, difference is 0 therebetween, the operation noise of outdoor unit is just close to optimum state.But in order to avoid excessively calculating,
To lose time, avoid enter into endless loop, difference allows deviation be present, i.e., when difference is interior at [- k ,+k], outdoor unit operation noise
It is smaller, that is, realize the optimization of outdoor unit noise.
Such as k=3dB, i.e., difference is when [- 3 dB ,+3 dB] are interior, you can illustrates to realize outdoor unit noise optimized design.
Step S4：Adjusted the average value of the current level of noise of compressor and the current level of noise of outer blower fan as target noise value
Compressor rotary speed and outer rotation speed of fan.
When the difference of the current level of noise of compressor and the current level of noise of outer blower fan is not being set in difference range, illustrate room
The outer total level of noise of machine is larger, it is necessary to compressor rotary speed and outer rotation speed of fan be adjusted, to cause the difference of two levels of noise setting
In difference range；Therefore, adjusted the average value of the current level of noise of compressor and the current level of noise of outer blower fan as target noise value
Whole compressor rotary speed and outer rotation speed of fan.That is, it needs to reduce the rotating speed of the big sound source of level of noise, improve the small sound source of level of noise
Rotating speed.
In this step, compressor rotary speed and outer rotation speed of fan can be adjusted simultaneously, in order to quickly cause compressor noise
The difference of value and outer blower fan level of noise is being set in difference range, quickly realizes the optimization of outdoor unit operation noise.
As another preferred design of the present embodiment, in this step, compressor rotary speed can also be alternately adjusted
With outer rotation speed of fan, to avoid influenceing unit operation stability as far as possible, avoid influenceing unit cooling or heating effect as far as possible.In this reality
Apply in example, first adjust compressor rotary speed, adjust outer rotation speed of fan again next time, alternately adjust successively.Specifically, this step is specific
Comprise the steps：
Judge whether to perform step S4 first；
If so, compressor rotary speed is then adjusted according to target noise value；
If it is not, then judge that last time performs the compressor rotary speed whether adjusted during step S4；If so, then adjusted according to target noise value
Outer rotation speed of fan；If it is not, compressor rotary speed is then adjusted according to target noise value.
Step S4 execution number is represented with n1；Enter step S4, frequency n 1 plus 1 every time；When entering step S1, n1 is clear
Zero.
Step S5：Judge whether unit reaches target fan-out capability.
If so, then return to step S2；
If it is not, then perform step S6.
After compressor rotary speed or outer rotation speed of fan is adjusted according to target noise value, because compressor rotary speed or outer blower fan turn
The change of speed, may result in unit and is unable to reach target fan-out capability, be i.e. indoor set is unable to reach object run effect, therefore
Also need to judge whether unit reaches target fan-out capability after compressor or outer rotation speed of fan is adjusted according to target noise value；If
It is no, then step S6 is performed, compressor rotary speed and outer rotation speed of fan are adjusted according to target fan-out capability, until to reach target defeated for unit
Output capacity, avoid influenceing unit cooling or heating effect, to realize that outdoor unit is made an uproar on the premise of cooling or heating effect is not influenceed
The optimization of sound；If so, then return to step S2, the difference of the current level of noise of compressor and the current level of noise of outer blower fan is rejudged
Whether in setting difference range.
Judge whether unit reaches target fan-out capability, that is, judge whether indoor set reaches object run effect（Refrigerated medium
Thermal effect）.
It is described to judge whether unit reaches target fan-out capability, specifically include：
In cooling condition, evaporating pressure is obtained（That is suction pressure of compressor）, judge whether evaporating pressure reaches target evaporation
Pressure；If so, then illustrate that unit reaches target fan-out capability；If it is not, then illustrate unit miss the mark fan-out capability；Method letter
List, it is easy to implement, accuracy of judgement.
In heating condition, condensing pressure is obtained（That is Compressor Discharge Pressure）, judge whether condensing pressure reaches target
Condensing pressure；If so, then illustrate that unit reaches target fan-out capability；If it is not, then illustrate unit miss the mark fan-out capability；Side
Method is simple, is easy to implement, accuracy of judgement.
It is described to judge whether unit reaches target fan-out capability as another decision design method of the present embodiment, tool
Body includes：Obtain environment temperature（That is indoor set environment temperature）, judge whether environment temperature reaches target environment temperature；If so,
Then unit reaches target fan-out capability；If it is not, then illustrate unit miss the mark fan-out capability；Method is simple, is easy to implement.
Step S6：Compressor rotary speed and outer rotation speed of fan, return to step S5 are adjusted according to target fan-out capability.
When unit miss the mark fan-out capability, compressor rotary speed is adjusted according to target fan-out capability and outer blower fan turns
Speed, it is then back to S5.
In this step, compressor rotary speed and outer rotation speed of fan can be adjusted simultaneously, in order to quickly cause unit to reach mesh
Mark fan-out capability.
As another preferred design of the present embodiment, in this step, compressor rotary speed can also be alternately adjusted
With outer rotation speed of fan, avoid influenceing unit operation stability to try one's best.In the present embodiment, compressor rotary speed is first adjusted, next time
Outer rotation speed of fan is adjusted again, is alternately adjusted successively.Specifically, this step specifically includes following step：
Judge whether to perform step S6 first；
If so, compressor rotary speed is then adjusted according to target fan-out capability；
If it is not, then judge that last time performs the compressor rotary speed whether adjusted during step S6；If so, then adjusted according to target fan-out capability
Whole outer rotation speed of fan；If it is not, compressor rotary speed is then adjusted according to target fan-out capability.
Step S6 execution number is represented with n2；Enter step S6, frequency n 2 plus 1 every time；When entering step S1, n2 is clear
Zero.
Step S7：Unit continues to run with according to current state.
When the difference of the current level of noise of compressor and the current level of noise of outer blower fan is being set in difference range, illustrate difference
Smaller, after two level of noise superpositions, total level of noise is smaller, i.e. outdoor unit noise is smaller, realizes that outdoor unit noise optimizes, unit
Continued to run with according to current state.
The air-conditioner set method for noise reduction control of the present embodiment, judge whether sub-load operates unit；If so, then obtain pressure
The current level of noise of contracting machine and the current level of noise of outer blower fan；Judge the difference of two levels of noise whether in setting difference range；If
It is that then unit continues to run with according to current state；If it is not, then by the flat of the current level of noise of compressor and the current level of noise of outer blower fan
Average adjusts compressor rotary speed and outer rotation speed of fan as target noise value；Then judge whether unit reaches target output energy
Power；If it is not, compressor rotary speed and outer rotation speed of fan are then adjusted according to target fan-out capability, until unit reaches target output energy
Power；If so, then reacquiring the current level of noise of compressor and the current level of noise of outer blower fan, the current level of noise of compressor is rejudged
Whether the difference with the current level of noise of outer blower fan is in setting range.Therefore, the method for noise reduction control of the present embodiment, in unit portion
When dividing load running, compressor rotary speed and outer rotation speed of fan are adjusted so that the current level of noise of compressor and the current noise of outer blower fan
The difference of value realizes that outdoor unit noise optimizes, while cause unit to reach target fan-out capability in setting difference range；From
And in unit operation at part load, on the premise of unit reaches target fan-out capability, realize outdoor unit operation noise
Optimize, reduce outdoor unit operation noise, improve user experience.
The method for noise reduction control of the present embodiment, separate without increasing, the use cost of user will not be increased；Moreover, in machine
During group full load operation, unit runs well, and does not influence cooling or heating effect during full load operation；Daytime, night need not be distinguished
In evening, as long as unit sub-load operates, that is, perform the control method of the present embodiment；Control is simple, be easy to implement, cost is low,
On the premise of not influenceing unit cooling or heating effect, the optimization of outdoor unit noise is realized.
The method for noise reduction control of the present embodiment, to compressor rotary speed and rotation speed of fan to reach indoor set object run effect
Premised on carry out coupling control, realize noise optimize.That is level of noise of the present embodiment from the full range of speeds of compressor, outer blower fan
The level of noise of the full range of speeds is set about, and carries out the Best Coupling control of operational effect and noise.
The present embodiment is by detecting unit operating load, compressor rotary speed, outer rotation speed of fan and system pressure（Condensation pressure
Power, evaporating pressure）Etc. parameter, in real time by coupling regulation compressor rotary speed and outer rotation speed of fan, the operation noise of unit is realized
Optimize, while ensure refrigeration, the heating operation effect of unit to greatest extent.
The method for noise reduction control of the present embodiment, when sub-load operates, from macroscopic aspect, reduce compressor and exogenous wind
The high noise source of noise decibel value in machine, influence of the high noise source of noise to total noise of centrifuge is weakened, reach the purpose of optimization.
The control method of the present embodiment is applied to unit machine, multi-connected machine etc., however it is not limited to the example above.With more frequency conversions
Compressor, the multi-connected machine outdoor unit of more outer blower fans can also realize that noise optimizes using similar control method.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although with reference to foregoing reality
Example is applied the present invention is described in detail, for the person of ordinary skill of the art, still can be to foregoing implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these are changed or replaced
Change, the essence of appropriate technical solution is departed from the spirit and scope of claimed technical solution of the invention.
Claims (10)
- A kind of 1. air-conditioner set method for noise reduction control, it is characterised in that：Methods described includes：（1）Judge whether sub-load operates unit；If so, then perform step（2）；（2）The current level of noise of compressor and the current level of noise of outer blower fan are obtained, and judges whether the difference of two levels of noise is setting Determine in difference range；If it is not, then perform step（3）；（3）Turn the average value of the current level of noise of compressor and the current level of noise of outer blower fan as target noise value adjustment compressor Fast and outer rotation speed of fan；（4）Judge whether unit reaches target fan-out capability；If so, then return to step（2）；If it is not, then perform step（5）；（5）Compressor rotary speed and outer rotation speed of fan, return to step are adjusted according to target fan-out capability（4）.
- 2. control method according to claim 1, it is characterised in that：It is described to judge whether sub-load operates unit, tool Body includes：When unit reaches target fan-out capability,Judge whether compressor rotary speed reaches compressor maximum setting speed；If it is not, then unit sub-load operates.
- 3. control method according to claim 1, it is characterised in that：It is described to judge whether sub-load operates unit, tool Body includes：When unit reaches target fan-out capability,Judge whether outer rotation speed of fan reaches outer blower fan maximum setting speed；If it is not, then unit sub-load operates.
- 4. control method according to claim 1, it is characterised in that：It is described to judge whether sub-load operates unit, tool Body includes：When unit is multi-connected machine unit, judge whether all indoor sets all start；If it is not, then unit sub-load operates.
- 5. control method according to claim 1, it is characterised in that：It is described to judge whether unit reaches target output energy Power, specifically include：In cooling condition, evaporating pressure is obtained, judges whether evaporating pressure reaches target evaporating pressure；If so, then unit reaches To target fan-out capability；In heating condition, condensing pressure is obtained, judges whether condensing pressure reaches target condensing pressure；If so, then unit reaches To target fan-out capability.
- 6. control method according to claim 1, it is characterised in that：It is described to judge whether unit reaches target output energy Power, specifically include：Environment temperature is obtained, judges whether environment temperature reaches target environment temperature；If so, then unit reaches target output energy Power.
- 7. control method according to claim 1, it is characterised in that：It is described to obtain the current level of noise of compressor and exogenous wind The current level of noise of machine, is specifically included：The current rotating speed of compressor is obtained, the pressure according to corresponding to default compressor rotary speed-level of noise corresponding table obtains current rotating speed The current level of noise of contracting machine；The outer current rotating speed of blower fan is obtained, it is outer according to corresponding to default outer rotation speed of fan-noise figure corresponding table obtains current rotating speed The current level of noise of blower fan.
- 8. control method according to claim 1, it is characterised in that：The step（3）Specifically include：Judge whether to perform step first（3）,If so, compressor rotary speed is then adjusted according to target noise value；If it is not, then judge that last time performs step（3）When whether adjust compressor rotary speed；If so, then adjusted according to target noise value Outer rotation speed of fan；If it is not, compressor rotary speed is then adjusted according to target noise value.
- 9. control method according to claim 1, it is characterised in that：The step（5）Specifically include：Judge whether to perform step first（5）,If so, compressor rotary speed is then adjusted according to target fan-out capability；If it is not, then judge that last time performs step（5）When whether adjust compressor rotary speed；If so, then adjusted according to target fan-out capability Whole outer rotation speed of fan；If it is not, compressor rotary speed is then adjusted according to target fan-out capability.
- 10. control method according to any one of claim 1 to 9, it is characterised in that：It is described set difference range as [- K ,+k], k is to set deviation, k >=0.
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| CN114659262A (en) * | 2022-04-07 | 2022-06-24 | 青岛海尔空调器有限总公司 | Method and device for reducing noise of air conditioner, air conditioner and storage medium |
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