CN108548301A - The control method of air-conditioning - Google Patents
The control method of air-conditioning Download PDFInfo
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- CN108548301A CN108548301A CN201810277350.0A CN201810277350A CN108548301A CN 108548301 A CN108548301 A CN 108548301A CN 201810277350 A CN201810277350 A CN 201810277350A CN 108548301 A CN108548301 A CN 108548301A
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- compressor
- raising frequency
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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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump 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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/30—Velocity
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to air-conditioning technical fields, and in particular to a kind of control method of air-conditioning.Present invention seek to address that the problem that universality is poor existing for the control method of existing air-conditioning, user experience is bad.For this purpose, the control method of the present invention includes：Obtain the rotating speed of inner blower；According to fitting formula, raising frequency speed of the calculating compressor in the raising frequency stage；It controls compressor and carries out raising frequency according to raising frequency speed；Wherein, fitting formula is determined according to the correspondence between the rotating speed of inner blower and the raising frequency speed of compressor.By predefining fitting formula, then according to fitting formula calculate compressor the raising frequency stage raising frequency speed, and then control compressor and carry out raising frequency according to raising frequency speed, the control method of air-conditioning of the invention can improve the universality of air-conditioning, improve the usage experience of user.
Description
Technical field
The present invention relates to air-conditioning technical fields, and in particular to a kind of control method of air-conditioning.
Background technology
With the increasingly raising of living standard, requirement of the people for quality of life is also higher and higher, and this requirement is in
Embody particularly evident on electrical appliance.By taking air-conditioning as an example, in order to meet the needs of user's fast-refrigerating/heating, to be user
Comfortable usage experience, existing air-conditioning is brought generally can all to make the quick raising frequency of compressor to higher frequency in rigid booting
It runs (such as raising frequency to maximum operation frequency).During compressor is quickly ramped up to high frequency, in order to ensure normal oil return, usually
Compressor continuous service in some or certain fixed frequencies (oil return frequency) can be forced for a period of time, to continue after oil return stabilization
Raising frequency.But force the compressor set-up mode of continuous service for a period of time in oil return frequency so that air-conditioning is quick in booting
During refrigerating/heating, the raising frequency overlong time of compressor slows down the speed that compressor reaches maximum operation frequency, in turn
Influence the effect of the quick heating/refrigeration of air-conditioning.
To solve the above problem of air-conditioning, the application for a patent for invention of Publication No. CN107576016A discloses a kind of " sky
The control method and system of tune ".Specifically, the control method includes mainly：Make the compressor start of air-conditioning；Make compressor by
According to multiple setting speeds, continuous raising frequency stage by stage；After continuous raising frequency stage by stage, judge whether compressor frequency reaches first
Target frequency；When compressor frequency reaches first object frequency, compressor is made to stop raising frequency.This application is mainly pressed by cancelling
Continuous running phases during contracting machine raising frequency in oil return frequency then make compressor upon actuation with different raising frequency speed
The mode of continuous raising frequency stage by stage shortens the raising frequency time of compressor, realizes the purpose of fast-refrigerating/heating.Although above-mentioned control
Method processed solves the problems, such as quick heating/poor refrigerating efficiency in the prior art to a certain extent, but also inevitably deposits
In following defect：First, fast-refrigerating/heating after not all user is required for air-conditioning to be switched on, nor all environment
Under the conditions of be suitable for fast-refrigerating/heating, therefore there is universality difference in above-mentioned control method in actual use.Its
Secondary, the quick raising frequency of air-conditioning can accordingly result in noise and become larger, for some special users or occasion (such as insomnia user or figure
Book shop) for, the generation of noise influences the usage experience of user very much.
Correspondingly, this field needs a kind of control method of new air-conditioning to solve the above problems.
Invention content
It is pervasive existing for the control method of existing air-conditioning in order to solve in order to solve the above problem in the prior art
The problem that property is poor, user experience is bad, the present invention provides a kind of control method of air-conditioning, the air-conditioning includes compressor, swollen
Swollen valve, outer wind turbine, inner blower, the control method include：
Obtain the rotating speed of the inner blower；
According to fitting formula, calculate the compressor the raising frequency stage raising frequency speed；
It controls the compressor and carries out raising frequency according to the raising frequency speed；
Wherein, the fitting formula is according to corresponding between the rotating speed of the inner blower and the raising frequency speed of the compressor
Relationship determines.
In the optimal technical scheme of the control method of above-mentioned air-conditioning, the control method further includes：
Judge whether the frequency of the compressor reaches stable working frequency；
When the frequency of the compressor reaches the stable working frequency, the compressor is made to stop raising frequency.
In the optimal technical scheme of the control method of above-mentioned air-conditioning, the stable working frequency is according to outdoor environment temperature
It is determined with the correspondence of stable working frequency.
In the optimal technical scheme of the control method of above-mentioned air-conditioning, the control method further includes：
According to the corresponding pass between the frequency of outdoor environment temperature and/or the compressor and the aperture of the expansion valve
System, adjusts the aperture of the expansion valve.
In the optimal technical scheme of the control method of above-mentioned air-conditioning, the control method further includes：
According to the corresponding pass between the frequency of outdoor environment temperature and/or the compressor and the rotating speed of the outer wind turbine
System adjusts the rotating speed of the outer wind turbine.
In the optimal technical scheme of the control method of above-mentioned air-conditioning, the raising frequency stage includes multiple raising frequency sub-stages,
The fitting formula includes accordingly multiple fitting subformulas, " according to fitting formula, calculates the compressor in the raising frequency stage
Raising frequency speed " further comprises：
According to each fitting subformula, the raising frequency speed of each raising frequency sub-stage of compressor is calculated separately.
In the optimal technical scheme of the control method of above-mentioned air-conditioning, " compressor is controlled according to the raising frequency speed
The step of progress raising frequency ", further comprises：
Control raising frequency speed continuous raising frequency of the compressor according to each raising frequency sub-stage.
In the optimal technical scheme of the control method of above-mentioned air-conditioning, the liter of the rotating speed of the inner blower and the compressor
Frequency speed is proportional.
In the optimal technical scheme of the control method of above-mentioned air-conditioning, the raising frequency speed is arbitrary in 0.5Hz-30Hz
Value.
It will be appreciated to those of skill in the art that in the preferred technical solution of the present invention, the control method packet of air-conditioning
It includes：Obtain the rotating speed of inner blower；According to fitting formula, raising frequency speed of the calculating compressor in the raising frequency stage；Control compressor is pressed
Raising frequency is carried out according to raising frequency speed；Wherein, fitting formula is according to corresponding between the rotating speed of inner blower and the raising frequency speed of compressor
Relationship determines.By predefining fitting formula, raising frequency speed of the compressor in the raising frequency stage is then calculated according to fitting formula,
And then control compressor and carry out raising frequency according to raising frequency speed, the control method of air-conditioning of the invention can improve the pervasive of air-conditioning
Property, improve the usage experience of user.
Specifically, the rotating speed of inner blower and the raising frequency speed of compressor are proportional.When interior rotation speed of fan is low, say
The hope that bright user's control air-conditioning carries out fast-refrigerating/heating is not strong, at this time according to the calculated compressor of fitting formula
Raising frequency speed be relatively low, compressor according to the raising frequency speed carry out raising frequency, can ensure air-conditioning refrigerating/heating effect
While fruit, noise is reduced；When interior rotation speed of fan is high, illustrating user, there is an urgent need to air-conditionings to carry out fast-refrigerating/heating at this time,
Raising frequency speed at this time according to the calculated compressor of fitting formula is relatively high, and compressor is risen according to the raising frequency speed
Frequently, air-conditioning fast-refrigerating/heating can be made, highly shortened the time of refrigerating/heating, for user bring it is good use body
It tests.Also, through inventor's repetition test, observation is analyzed and is compared, technical solution using the present invention carry out fast-refrigerating/
In the case of heating, can the raising frequency speed of air-conditioning be promoted into several times, even decades of times compared with the existing technology, realize air-conditioning
Jump frequency.
Description of the drawings
With reference to the accompanying drawings and in conjunction with the refrigeration mode of air-conditioning come describe the present invention air-conditioning control method.In attached drawing：
Fig. 1 is the flow diagram of the control method of the air-conditioning of the present invention；
Fig. 2 be the present invention air-conditioning control method in compressor raising frequency speed curve diagram.
Specific implementation mode
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this
A little embodiments are used only for explaining the technical principle of the present invention, it is not intended that limit the scope of the invention.Although for example,
Present invention combination air-conditioning is described for running in cooling mode, but this application scenarios are not unalterable,
In the case of without departing from the principle of the invention, those skilled in the art can also apply the inventive method to other applied fields
Scape, such as application and air-conditioning heating mode or dehumidification mode.
Firstly the need of explanation, usual air conditioner all includes indoor unit and outdoor unit, and being provided with interior in indoor unit changes
Hot device, inner blower etc. are provided with compressor, electric expansion valve, outer wind turbine and outdoor heat exchanger etc. in outdoor unit.Lead in indoor unit
It is often additionally provided with the control system for controlling air-conditioning work, if control system includes control module, judgment module, computing module
With acquisition module etc..Wherein, the physical form of control module, judgment module, computing module and acquisition module can be only each other
Vertical, naturally it is also possible to the functional unit being integrated on a physical module.As the control system of air-conditioning include memory and
Processor, and the computer program that is stored in memory and can run on a processor, the computer program can be completed
The function of above-mentioned control module, judgment module and acquisition module.The physics setting of the above air-conditioning is that the prior art is hollow
The conventional arrangement mode of tune should not be seen as the limitation of the control method to being invented.
It is the flow diagram of the control method of the air-conditioning of the present invention referring to Fig. 1, Fig. 1.
As shown in Figure 1, in order to solve, universality is poor existing for the control method of existing air-conditioning, user experience is bad asks
Topic, the present invention provides a kind of control method of air-conditioning, which mainly includes the following steps that：
S100, the rotating speed for obtaining inner blower；Such as by user press switch make air-conditioning be switched on and select operational mode (such as
Refrigeration) and operating air velocity after, air-conditioning is by receiving the instruction acquisition of user to operating air velocity set by user, i.e. turn of inner blower
Speed.
S200, according to fitting formula, raising frequency speed of the compressor in the raising frequency stage is calculated, if fitting formula is according to inner blower
Rotating speed and the raising frequency speed of compressor between correspondence determine, and the raising frequency speed of the rotating speed of inner blower and compressor
The rotating speed of proportional inner blower is higher, and the raising frequency speed of compressor is faster, and the control system of air-conditioning is according to fitting formula meter
Calculate the raising frequency speed in compressor raising frequency stage；
S300, control compressor carry out raising frequency, such as after calculating the raising frequency speed of compressor, air-conditioning according to raising frequency speed
Control system control compressor according to the continuous raising frequency of raising frequency speed or continuous raising frequency stage by stage；
S400, judge whether the frequency of compressor reaches stable working frequency, as the control system of air-conditioning obtains pressure in real time
The current frequency of contracting machine, and current frequency is compared with stable working frequency；
S500, when the frequency of compressor reaches stable working frequency, make compressor stop raising frequency, such as reached in current frequency
When to stable working frequency, control system control compressor maintains stable working frequency and works on.
It can be seen from the above description that by predetermined fitting formula, is then calculated and compressed according to fitting formula
Raising frequency speed of the machine in the raising frequency stage, and then control compressor and carry out raising frequency, the control of air-conditioning of the invention according to raising frequency speed
Method can improve the universality of air-conditioning, improve the usage experience of user.In other words, the present invention solves existing air-conditioning
The problem that universality existing for control method is poor, user experience is bad improves the comfort of air-conditioning, improves user experience.
Referring to Fig. 2, the principle that the present invention is further explained.Wherein, Fig. 2 is compressor in the control method of the present invention
Raising frequency speed curve diagram.
As shown in Fig. 2, in a kind of possible embodiment, there are one compressors the raising frequency stage, and the raising frequency rank
The rotating speed of inner blower and the raising frequency speed of compressor are proportional in the fitting formula of section, it is preferable that raising frequency speed is
Arbitrary value in 0.5Hz-30Hz.For example, the fitting formula of raising frequency speed can be：V=krn+ b, wherein v indicates pressure
The raising frequency speed (Hz/s) of contracting machine, rnThe rotating speed (r/min) of inner blower is represented, k is proportionality coefficient, and b is constant.Fitting formula
Proportionality coefficient k and constant b can be determined as follows：Assuming that the wind speed of air-conditioning includes five kinds from low to high, it is accordingly interior
The rotating speed of wind turbine is respectively rn1=500r/min, rn2=700r/min, rn3=900r/min, rn4=1200r/min, rn5=
1500r/min enables r as a result,n1When=500r/min, raising frequency speed v1=0.5Hz/s, rn5When=1500r/min, raising frequency speed
v5=30Hz/s, is acquired, k=0.0295, b=-14.25, therefore v=0.0295rn-14.25.After calculating fitting formula,
Fitting formula is preset in the control system of air-conditioning, so, after user is switched on selection mode and wind speed every time, control
System just can determine that the raising frequency speed of compressor, and work according to the raising frequency speed control compressor raising frequency.
Referring to table 1, in a kind of possible embodiment, stable working frequency can according to outdoor environment temperature with
The correspondence of stable working frequency determines.
The 1 stable working frequency table of comparisons of table
Wherein, TaoRepresent outdoor environment temperature, fwRepresent the stable working frequency of compressor, feRepresent the specified of compressor
Working frequency.
Referring to table 2 and table 3, in a kind of possible embodiment, preferably to improve the body that user uses air-conditioning
It tests, promotes refrigeration effect, improve the job stability and service life of compressor, the control method of air-conditioning of the invention can be with
Include the following steps：
According to the correspondence between the aperture of the frequency and electric expansion valve of outdoor environment temperature and compressor, adjustment electricity
The aperture of sub- expansion valve.
According to the correspondence between outdoor environment temperature and the rotating speed of outer wind turbine, the rotating speed of outer wind turbine is adjusted.
2 electronic expansion valve opening control table of table
Wherein, TaoOutdoor environment temperature is represented, f represents the working frequency of compressor, and B represents the aperture of electric expansion valve.
3 outer rotation speed of fan control table (1) of table
| Tao(℃) | ≤22 | 22-29 | ≥29 |
| rw(r/min) | 400 | 800 | 1200 |
Wherein, TaoRepresent outdoor environment temperature, rwRepresent the rotating speed of outer wind turbine.
By above-mentioned control mode, the advantages of control method of air-conditioning of the invention, is：It is public by predefining fitting
Then formula calculates raising frequency speed of the compressor in the raising frequency stage according to fitting formula, and then control compressor according to raising frequency speed
Raising frequency is carried out, the control method of air-conditioning of the invention can improve the universality of air-conditioning, improve the usage experience of user.It is specific and
Speech, the rotating speed of inner blower and the raising frequency speed of compressor are proportional.When wind speed setting is low, i.e. inner blower rotating speed is low, say
The hope that bright user's control air-conditioning carries out fast-refrigerating is not strong, at this time according to the raising frequency of the calculated compressor of fitting formula
Speed is relatively low, and compressor carries out raising frequency according to the raising frequency speed, can be while ensureing the refrigeration effect of air-conditioning, drop
Low noise；When wind speed setting is high, i.e. inner blower rotating speed is high, illustrating user, there is an urgent need to air-conditionings to carry out fast-refrigerating at this time, this
When it is relatively high according to the raising frequency speed of the calculated compressor of fitting formula, compressor according to the raising frequency speed carry out raising frequency,
It can make air-conditioning fast-refrigerating, greatly shorten the time of refrigeration, generate cold wind rapidly, reduce indoor temperature, improve user's body
It tests.It is corresponded to by the parameters such as outdoor environment temperature and compressor operating frequency and determines that stable working frequency, the electronics of compressor are swollen
The parameters such as the rotating speed of the aperture of swollen valve and outer wind turbine, control method of the invention can also be in compressor operatings, for compression
Machine provides the running environment to match, further increases the working efficiency and job stability of compressor, improves the operation of air-conditioning
Effect.
Further, through inventor's repetition test, observation is analyzed and is compared and obtains, the oil spitting amount to compressor, electricity are passed through
The aperture of sub- expansion valve, the rotating speed of outer wind turbine and oil-liquid separator etc. are accurately controlled, and are ensureing compressor operating stabilization
Under the premise of, the raising frequency speed of compressor can be controlled steadily in 0.5-30Hz/s, and especially maximum raising frequency speed can reach
To surprising 30Hz/s.And those skilled in the art understand that, the raising frequency speed of compressor is mostly in the prior art
0.5-1Hz/s, few compressors can reach the raising frequency speed of the present invention when keeping steady operation.Thus, it is of the invention
The raising frequency speed of air-conditioning can be promoted several times, even decades of times by air-conditioning compared with the existing technology when carrying out fast-refrigerating, from
And realize the jump frequency of air-conditioning, significantly improve the usage experience of user.
Certainly, the above embodiment is used only for the principle illustrated the present invention, it is not intended that in the limitation present invention's
Protection domain, under conditions of without departing from the principle of the invention, those skilled in the art can also do arbitrary form to above-mentioned parameter
Adjustment, as long as the technical solution after adjustment can improve the condition of raising frequency speed under the premise of ensureing compressor normal oil return
.For example, the form of fitting formula and the parameter of air-conditioning can be adjusted based on different application scenarios, such as fitting formula
Can also be v=krn 2+ b, the wind speed of air-conditioning can also be 4 or 6 etc., and the corresponding inner blower rotating speed of minimum wind speed can be with
Rotating speed for 400r/min or 600r/min, the corresponding inner blower of highest wind velocity can also be 1400r/min or 1600r/min
Deng.For another example, the aperture of electric expansion valve can also opening according to the frequency and electric expansion valve of outdoor environment temperature or compressor
Correspondence between degree is adjusted, the rotating speed of outer wind turbine can also according to the frequency of outdoor environment temperature and compressor with it is outer
Correspondence between the rotating speed of wind turbine is adjusted (such as the following table 4).
4 outer rotation speed of fan control table (2) of table
Wherein, TaoOutdoor environment temperature is represented, f represents the working frequency of compressor, rwRepresent the rotating speed of outer wind turbine.
In addition, further to promote the refrigeration effect of air-conditioning, the raising frequency stage of compressor can also further be segmented
For multiple raising frequency sub-stages, accordingly, each raising frequency sub-stage includes a fitting subformula, and being fitted between subformula can be with
The only difference of coefficient can also be the difference for being fitted subformula.For example, the raising frequency stage of compressor may include three raising frequencies
Sub-stage, the corresponding fitting subformula of each raising frequency sub-stage is respectively v1=k1rn+b1、v2=k2rn+b2、v3=k3rn+b3.
After user determines wind speed, control system calculates each raising frequency sub-stage of accordingly compressor according to each fitting subformula respectively
Raising frequency speed, then control raising frequency speed successively raising frequency of the compressor according to each raising frequency sub-stage.Three are such as calculated to rise
The relationship of the raising frequency speed of frequency sub-stage is v1>v2>v3(certainly, which may be other such as v1<v2<v3Deng), then pass through
Compressor raising frequency in such a way that raising frequency speed is gradually reduced is controlled, while realizing air-conditioning fast-refrigerating, ensures compressor oil return
Normally, it is gradually reduced process noise, is prolonged the service life.
With reference to Fig. 1 and Fig. 2, brief Jie is done to a kind of workflow of the air-conditioning of the control method of the application present invention
It continues.The course of work of air-conditioning can be：
Air-conditioning is switched on → selects refrigeration mode and wind speed setting as maximum wind velocity → according to fitting formula, calculates compressor
Raising frequency speed v, while according to table 1, table 2 and table 3, determining stable working frequency fw, expansion valve target aperture B and outer wind turbine
Rotating speed rw→ compressor carries out quick raising frequency according to raising frequency speed v, and expansion valve is according to target aperture B valve opening, and outer wind turbine is according to turning
Fast rwOperation → compressor reaches stable working frequency f after a period of timewAfter maintain the frequency run, electric expansion valve
Aperture B is adjusted according to table 2, the rotating speed r of outer wind turbinewIt is adjusted according to table 4.
Finally, it should be noted that although present embodiment in a chiller mode for be described, it is clear that it is this to answer
Not unalterable with scene, in the case of without departing from the principle of the invention, those skilled in the art can also be by the present invention's
Control method is applied to air-conditioning others pattern, such as the heating mode or dehumidification mode of application and air-conditioning.
So far, it has been combined preferred embodiment shown in the drawings and describes technical scheme of the present invention, still, this field
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific implementation modes.Without departing from this
Under the premise of the principle of invention, those skilled in the art can make the relevant technologies feature equivalent change or replacement, these
Technical solution after change or replacement is fallen within protection scope of the present invention.
Claims (9)
1. a kind of control method of air-conditioning, the air-conditioning includes compressor, expansion valve, outer wind turbine, inner blower, which is characterized in that
The control method includes：
Obtain the rotating speed of the inner blower；
According to fitting formula, calculate the compressor the raising frequency stage raising frequency speed；
It controls the compressor and carries out raising frequency according to the raising frequency speed；
Wherein, the fitting formula is according to the correspondence between the rotating speed of the inner blower and the raising frequency speed of the compressor
It determines.
2. the control method of air-conditioning according to claim 1, which is characterized in that the control method further includes：
Judge whether the frequency of the compressor reaches stable working frequency；
When the frequency of the compressor reaches the stable working frequency, the compressor is made to stop raising frequency.
3. the control method of air-conditioning according to claim 2, which is characterized in that the stable working frequency is according to outdoor ring
The correspondence of border temperature and stable working frequency determines.
4. the control method of air-conditioning according to claim 1, which is characterized in that the control method further includes：
According to the correspondence between outdoor environment temperature and/or the frequency and the aperture of the expansion valve of the compressor, adjust
The aperture of the whole expansion valve.
5. the control method of air-conditioning according to claim 1, which is characterized in that the control method further includes：
According to the correspondence between outdoor environment temperature and/or the frequency and the rotating speed of the outer wind turbine of the compressor, adjust
The rotating speed of the whole outer wind turbine.
6. the control method of air-conditioning according to any one of claim 1 to 5, which is characterized in that the raising frequency stage packet
Include multiple raising frequency sub-stages, the fitting formula includes accordingly multiple fitting subformulas, " according to fitting formula, described in calculating
Raising frequency speed of the compressor in the raising frequency stage " further comprises：
According to each fitting subformula, the raising frequency speed of each raising frequency sub-stage of compressor is calculated separately.
7. the control method of air-conditioning according to claim 6, which is characterized in that " control the compressor according to the liter
The step of frequency speed progress raising frequency ", further comprises：
Control raising frequency speed continuous raising frequency of the compressor according to each raising frequency sub-stage.
8. the control method of air-conditioning according to claim 1, which is characterized in that the rotating speed of the inner blower and the compression
The raising frequency speed of machine is proportional.
9. the control method of air-conditioning according to claim 1, which is characterized in that the raising frequency speed is in 0.5Hz-30Hz
Arbitrary value.
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| CN114279069A (en) * | 2021-12-15 | 2022-04-05 | 珠海格力电器股份有限公司 | Air conditioner noise control method and device and air conditioner |
| CN114719393A (en) * | 2022-04-07 | 2022-07-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Air conditioner control method and nonvolatile storage medium |
| CN114719393B (en) * | 2022-04-07 | 2023-08-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Air conditioner control method and nonvolatile storage medium |
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