CN108548291A - The control method of air-conditioning under refrigeration mode - Google Patents
The control method of air-conditioning under refrigeration mode Download PDFInfo
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- CN108548291A CN108548291A CN201810277347.9A CN201810277347A CN108548291A CN 108548291 A CN108548291 A CN 108548291A CN 201810277347 A CN201810277347 A CN 201810277347A CN 108548291 A CN108548291 A CN 108548291A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- 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
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- 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
-
- 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
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
Abstract
The present invention relates to air-conditioning technical fields, and in particular to the control method of air-conditioning under a kind of refrigeration mode.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 outdoor environment temperature；According to the first fitting formula, the pass valve speed of expansion valve is calculated；According to the second fitting formula, raising frequency speed of the calculating compressor in the raising frequency stage；It controls expansion valve and closes valve to target aperture according to valve speed is closed；Preferably, while expansion valve is according to valve speed pass valve to target aperture is closed, control compressor carries out raising frequency according to raising frequency speed.By above-mentioned control mode, the control method of air-conditioning can improve the universality of air-conditioning under refrigeration mode of the invention, improve the usage experience of user.
Description
Technical field
The present invention relates to air-conditioning technical fields, and in particular to the control method of air-conditioning under a kind of refrigeration mode.
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.It is easypro to be brought for user in order to meet the needs of user's fast-refrigerating by taking air-conditioning as an example
Suitable usage experience, existing air-conditioning generally can all be such that the quick raising frequency of compressor to higher frequency runs (such as in rigid booting
Raising frequency is to maximum operation frequency).During compressor is quickly ramped up to high frequency, in order to ensure normal oil return, it will usually force
Compressor continuous service in some or certain fixed frequencies (oil return frequency) for a period of time, waits for that subsequent frequency of continuing rising is stablized in oil return.
But force the compressor set-up mode of continuous service for a period of time in oil return frequency so that air-conditioning is in booting fast-refrigerating mistake
Cheng Zhong, the raising frequency overlong time of compressor slow down the speed that compressor reaches maximum operation frequency, and then it is quick to influence air-conditioning
The effect of refrigeration.
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.Although above-mentioned control method
It solves the problems, such as that fast-refrigerating effect is poor in the prior art to a certain extent, but is also inevitably present following defect：
First, fast-refrigerating after not all user is required for air-conditioning to be switched on, nor being suitable under all environmental conditions quickly
Refrigeration, therefore there is universality difference in actual use in above-mentioned control method.Secondly, the quick raising frequency of air-conditioning can be corresponding
Ground causes noise to become larger, and for some special users or occasion (such as insomnia user or library), the generation of noise is non-
Often influence the usage experience of user.
Correspondingly, this field needs a kind of control method of air-conditioning under new refrigeration mode 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 under refrigeration mode, the air-conditioning includes
Compressor, expansion valve and outer wind turbine, the control method include：
Obtain outdoor environment temperature；
According to the first fitting formula, the pass valve speed of the expansion valve is calculated；
According to the second fitting formula, calculate the compressor the raising frequency stage raising frequency speed；
It controls the expansion valve and closes valve to target aperture according to the pass valve speed；
The expansion valve according to the pass valve speed close valve to the target aperture while, before or after, control
The compressor carries out raising frequency according to the raising frequency speed；
Wherein, first fitting formula is according between the outdoor environment temperature and the pass valve speed of the expansion valve
Correspondence determines；Second fitting formula is according between the outdoor environment temperature and the raising frequency speed of the compressor
Correspondence determines.
Under above-mentioned refrigeration mode in the optimal technical scheme of the control method of 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, controls the compressor and stop raising frequency；
Wherein, the stable working frequency is determined according to the correspondence of outdoor environment temperature and stable working frequency.
Under above-mentioned refrigeration mode in the optimal technical scheme of the control method of air-conditioning, the step of " obtaining outdoor environment temperature "
After rapid, the control method further includes：
Judge whether the outdoor environment temperature is in preset temperature range；
When the outdoor environment temperature is in the temperature range, according to second fitting formula, the pressure is calculated
Raising frequency speed of the contracting machine in the raising frequency stage.
Under above-mentioned refrigeration mode in the optimal technical scheme of the control method of air-conditioning, the control method further includes：
When the outdoor environment temperature is less than the minimum value of the temperature range, according to second fitting formula, press
According to the temperature range minimum value calculate the compressor the raising frequency stage raising frequency speed；Or
When the outdoor environment temperature is more than the maximum value of the temperature range, according to second fitting formula, press
Raising frequency speed of the compressor described in maximum value calculation according to the temperature range in the raising frequency stage.
Under above-mentioned refrigeration mode in the optimal technical scheme of the control method of air-conditioning, the target aperture is the expansion
The reference opening amount of valve, " the expansion valve according to the pass valve speed close valve to the target aperture while, before or it
Afterwards, control the compressor according to the raising frequency speed carry out raising frequency " the step of further comprise：
When the aperture of the expansion valve reaches the reference opening amount, control the compressor according to the raising frequency speed into
Row raising frequency.
Under above-mentioned refrigeration mode in the optimal technical scheme of the control method of air-conditioning, " control the expansion valve according to
The pass valve speed closes valve to target aperture " the step of after, the control method further includes：
The aperture of the expansion valve is adjusted according to the target exhaust temperature of the compressor.
Under above-mentioned refrigeration mode in the optimal technical scheme of the control method of 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.
Under above-mentioned refrigeration mode in the optimal technical scheme of the control method of air-conditioning, the raising frequency stage includes multiple liters
Frequency sub-stage, second fitting formula include accordingly multiple second fittings subformula, " according to the second fitting formula, are calculated
Raising frequency speed of the compressor in the raising frequency stage " further comprises：
It is fitted subformula according to each second, calculates separately the raising frequency speed of each raising frequency sub-stage of compressor.
Under above-mentioned refrigeration mode in the optimal technical scheme of the control method of air-conditioning, " compressor is controlled according to institute
State raising frequency speed carry out raising frequency " the step of further comprise：
The compressor is controlled successively according to the continuous raising frequency of raising frequency speed of each raising frequency sub-stage.
Under above-mentioned refrigeration mode in the optimal technical scheme of the control method of air-conditioning, the outdoor environment temperature with it is described
The pass valve speed of expansion valve is proportional；And/or the raising frequency speed of the outdoor environment temperature and the compressor at
Proportional relation；And/or the raising frequency speed is the arbitrary value in 0.5Hz-30Hz.
It will be appreciated to those of skill in the art that in the preferred technical solution of the present invention, air-conditioning under refrigeration mode
Control method includes：Obtain outdoor environment temperature；According to the first fitting formula, the pass valve speed of expansion valve is calculated；According to second
Fitting formula, raising frequency speed of the calculating compressor in the raising frequency stage；It controls expansion valve and closes valve to target aperture according to valve speed is closed；
Preferably, while expansion valve is according to valve speed pass valve to target aperture is closed, control compressor is risen according to raising frequency speed
Frequently；Wherein, the first fitting formula is determined according to the correspondence of outdoor environment temperature and expansion valve closed between valve speed；Second
Fitting formula is determined according to the correspondence between outdoor environment temperature and the raising frequency speed of compressor.By predefining first
Then fitting formula and the second fitting formula calculate the pass valve speed of expansion valve according to the first fitting formula and the second fitting formula
Raising frequency speed with compressor in the raising frequency stage, and then control expansion valve and close valve to target aperture according to valve speed is closed, and closing
Compressor is controlled while valve to target aperture carries out raising frequency according to raising frequency speed, the control of air-conditioning under refrigeration mode of the invention
Method can improve the universality of air-conditioning, improve the usage experience of user.
Specifically, outdoor environment temperature pass directly proportional to the pass valve speed and the raising frequency speed of compressor of expansion valve respectively
System.When outdoor environment temperature is relatively low, the sendible temperature of human body is relatively low, thus it is from the outside into the room when user's control
The hope that air-conditioning carries out fast-refrigerating is not strong, at this time according to the first fitting formula and the calculated expansion of the second fitting formula
The pass valve speed of valve and the raising frequency speed of compressor are relatively low, and expansion valve closes valve to target aperture according to the pass valve speed
When, compressor carries out raising frequency according to the raising frequency speed, can improve expansion valve and pressure while ensureing the refrigeration effect of air-conditioning
The operation stability of contracting machine reduces operation noise；When outdoor environment temperature is relatively high, the sendible temperature of human body is also higher,
Therefore there is an urgent need to air-conditionings to carry out fast-refrigerating by user when from the outside into the room, quasi- according to the first fitting formula and second at this time
The raising frequency speed of the pass valve speed and compressor of closing the calculated expansion valve of formula is relatively high, and expansion valve is according to the pass valve speed
When fast quick-closing valve to target aperture, compressor is according to the quick raising frequency of raising frequency speed, so as to realize the fast-refrigerating of air-conditioning,
The time of refrigeration is highly shortened, good usage experience is brought for user.Also, through inventor's repetition test, observe, point
It analyses and compares, it, can be compared with the existing technology by air-conditioning in the case where technical solution using the present invention carries out fast-refrigerating
Raising frequency speed promoted several times, even decades of times, realize air-conditioning jump frequency.In addition, by making expansion before compressor start
Valve opening is decreased to target aperture, and the aperture of expansion valve can also be made to be matched with compressor in compressor start, avoid expanding
Expansion valve opening occurs with the bad situation of compressor matching degree caused by valve starts together with compressor, further increases pressure
Refrigeration effect after the startup of contracting machine.
Description of the drawings
With reference to the accompanying drawings come describe the present invention refrigeration mode under air-conditioning control method.In attached drawing：
Fig. 1 be the present invention refrigeration mode under air-conditioning control method flow diagram；
Fig. 2 be the present invention refrigeration mode under air-conditioning control method in expansion valve pass valve speed curve diagram；
Fig. 3 be the present invention refrigeration mode under 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,
The second fitting formula of the raising frequency speed of compressor is with v in specific implementation modey=kTao+ b is exemplifies, but this fitting
The form of formula is non-unalterable, and those skilled in the art can as needed make adjustment to it, to adapt to specifically answer
Use occasion.For example, the second fitting formula can also be vy=kTao 2+ b etc..
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.
Referring to the flow diagram of the control method of air-conditioning under the refrigeration mode that Fig. 1, Fig. 1 are the present invention.
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 under refrigeration mode, which mainly includes the following steps that：
S100, outdoor environment temperature is obtained；Such as after air-conditioning is switched on and selects refrigeration mode, by being arranged in outdoor unit
The mode of temperature sensor obtains outdoor environment temperature；
S200, according to the first fitting formula, calculate the pass valve speed of electric expansion valve, such as the first fitting formula according to outdoor
The correspondence of environment temperature and electric expansion valve closed between valve speed determines, and outdoor environment temperature and electric expansion valve
Pass valve speed it is proportional, i.e., outdoor environment temperature is higher, and the pass valve speed of electric expansion valve is faster, the control system of air-conditioning
System calculates the pass valve speed that electric expansion valve closes the valve stage according to the first fitting formula；
S300, according to the second fitting formula, calculate raising frequency speed of the compressor in the raising frequency stage, such as the second fitting formula root
It is determined according to the correspondence between outdoor environment temperature and the raising frequency speed of compressor, and outdoor environment temperature and compressor
Raising frequency speed is proportional, and outdoor environment temperature is higher, and the raising frequency speed of compressor is faster, and the control system of air-conditioning is according to
Two fitting formulas calculate the raising frequency speed in compressor raising frequency stage；
S400, control electric expansion valve close valve to target aperture according to valve speed is closed, it is preferable that target aperture is that electronics is swollen
The reference opening amount of swollen valve, after calculating the pass valve speed of electric expansion valve, the control system of air-conditioning control expansion valve according to
It closes valve speed and closes valve to reference opening amount；
S500, electric expansion valve close valve to target aperture while, before or after, control compressor according to raising frequency speed
Degree carry out raising frequency, it is preferable that electric expansion valve close valve to target aperture while, air-conditioning control system control compressor according to
The continuous raising frequency of raising frequency speed or stage by stage continuous raising frequency；
S600, 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；
S700, 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 predefining the first fitting formula and the second fitting formula, then basis
First fitting formula and the second fitting formula calculate the raising frequency speed of pass the valve speed and compressor of expansion valve, and then control expansion
Valve according to close valve speed close valve to target aperture, and while closing valve to target aperture control compressor according to raising frequency speed into
Row raising frequency, the control method of air-conditioning can improve the universality of air-conditioning under refrigeration mode of the invention, and that improves user uses body
It tests.In other words, the present invention solves existing for the control method of existing air-conditioning that universality is poor, user experience is bad asks
Topic, improves the comfort of air-conditioning, improves user experience.
Referring to Fig. 2 and Fig. 3, the principle that the present invention is further explained.Wherein, under refrigeration modes of the Fig. 2 for the present invention
The pass valve speed curve diagram of expansion valve in the control method of air-conditioning, Fig. 3 be the present invention refrigeration mode under air-conditioning control method
The raising frequency speed curve diagram of middle compressor.
As shown in Fig. 2, in a kind of possible embodiment, outdoor environment temperature and expansion valve in the first fitting formula
It is proportional to close valve speed, it is preferable that target aperture is the reference opening amount of expansion valve.For example, the first of valve speed is closed
Fitting formula can be：vp=k ' Tao+ b ', wherein vp(P/s, wherein P are opening for expansion valve to the pass valve speed of expression expansion valve
Spend unit " step "), TaoIndicate that outdoor environment temperature (DEG C), k ' are proportionality coefficient, b ' is constant.The ratio system of first fitting formula
Number k ' and constant b ' can be determined as follows：Assuming that outdoor environment temperature TaoValue range be 16-40 DEG C, as a result,
Enable TaoAt=16 DEG C, valve speed v is closedpmin=30P/s, TaoAt=40 DEG C, valve speed v is closedpmax=80P/s, is acquired, and k '=
=-3.2, therefore v 2.08, b 'p=2.08Tao-3.2.After calculating the first fitting formula, the first fitting formula is preset in
In the control system of air-conditioning, so, after user selects refrigeration mode every time, control system just can be according to the room got
External environment temperature determines the pass valve speed of expansion valve, and closes valve work according to the pass valve speed control expansion valve.
As shown in figure 3, in a kind of possible embodiment, there are one compressors the raising frequency stage, and the raising frequency rank
The raising frequency speed of outdoor environment temperature and compressor is proportional in second fitting formula of section, it is preferable that raising frequency speed is
Arbitrary value in 0.5Hz-30Hz.For example, the second fitting formula of raising frequency speed can be：vy=kTao+ b, wherein vy
Indicate the raising frequency speed (Hz/s) of compressor, TaoIndicate outdoor environment temperature (DEG C), k is proportionality coefficient, and b is constant.Second is quasi-
The proportionality coefficient k and constant b for closing formula can be determined as follows：Assuming that outdoor environment temperature TaoValue range be
16-40 DEG C, T is enabled as a result,aoWhen=16, raising frequency speed vymin=0.5Hz/s, TaoAt=40 DEG C, raising frequency speed vymax=30Hz/
S is acquired, k=1.23, b=-19.2, therefore vy=1.23Tao-19.2.After calculating the second fitting formula, by the second fitting
Formula is preset in the control system of air-conditioning, and so, after user selects refrigeration mode every time, control system just can basis
The outdoor environment temperature got determines the raising frequency speed of compressor, and works according to the raising frequency speed control compressor raising frequency.
It further, can also be by outdoor environment temperature TaoValue range be divided into one or more temperature ranges,
Outdoor environment temperature TaoWhen falling into one of temperature range, corresponding raising frequency speed is calculated using the second fitting formula.For example,
By outdoor environment temperature TaoValue range be divided into three sections (- ∞, 16), [16,40] and (40 ,+∞), getting
Outdoor environment temperature TaoWhen in [16,40] this section, using the second fitting formula vy=kTao+ b calculates raising frequency speed,
As outdoor environment temperature TaoWhen in (- ∞, 16) or the section (40 ,+∞), then outdoor environment temperature is equal to 16 and 40 respectively
Raising frequency speed of the raising frequency speed as compressor at this temperature when (i.e. the minimum value and maximum value of temperature range [16,40]).
Thus, the raising frequency speed of compressor can be prevented excessive or the too small damage caused by compressor with simplify control program.
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.
In a kind of possible embodiment, preferably to improve the experience that user uses air-conditioning, refrigeration effect is promoted, is carried
The step of job stability and service life of high compressor, control electric expansion valve is according to valve speed pass valve to target aperture is closed
Later, control method further includes：
The aperture of electric expansion valve is adjusted according to the target exhaust temperature of compressor.
Referring to table 2, in a kind of possible embodiment, preferably to improve the experience that user uses air-conditioning, carry
Refrigeration effect is risen, improves the job stability and service life of compressor, control method of the invention can also include following step
Suddenly：
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 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, under refrigeration mode of the invention the advantages of control method of air-conditioning be：By advance
It determines the first fitting formula and the second fitting formula, expansion valve is then calculated in the pass valve for closing the valve stage according to the first fitting formula
Speed calculates raising frequency speed of the compressor in the raising frequency stage according to the second fitting formula, and then it is fast according to valve is closed to control expansion valve
Degree closes valve to reference opening amount, and controls compressor while closing valve to reference opening amount and carry out raising frequency, this hair according to raising frequency speed
The control method of bright air-conditioning can improve the universality of air-conditioning, improve the usage experience of user.
Specifically, outdoor environment temperature is proportional with the raising frequency speed of expansion valve and compressor respectively.In outdoor
When environment temperature is relatively low, the sendible temperature of human body is relatively low, thus it is from the outside into the room when user's control air-conditioning carry out it is fast
The hope of speed refrigeration is not strong, at this time according to the pass valve speed of the first fitting formula and the calculated expansion valve of the second fitting formula
The raising frequency speed of degree and compressor is relatively low, and when expansion valve closes valve to reference opening amount according to the pass valve speed, compressor is pressed
Raising frequency is carried out according to the raising frequency speed, the operation of expansion valve and compressor can be improved while ensureing the refrigeration effect of air-conditioning
Stability reduces operation noise；When outdoor environment temperature is relatively high, the sendible temperature of human body is higher, thus from outdoor into
There is an urgent need to air-conditionings to carry out fast-refrigerating by user when entering interior, be calculated at this time according to the first fitting formula and the second fitting formula
Expansion valve the raising frequency speed for closing valve speed and compressor it is relatively high, expansion valve is according to the fast quick-closing valve of pass valve speed to base
When quasi- aperture, compressor highly shortened according to the quick raising frequency of raising frequency speed so as to realize the fast-refrigerating of air-conditioning
The time of refrigeration brings good usage experience for user.
By making expansion valve opening be decreased to reference opening amount before compressor start, the aperture of expansion valve can also be made to exist
It is matched with compressor when compressor start, expansion valve opening and compressor caused by avoiding expansion valve from starting together with compressor
The bad situation of matching degree occurs, and further increases the refrigeration effect after compressor start.Pass through outdoor environment temperature and compression
The parameters such as machine working frequency correspond to the rotating speed of the stable working frequency and outer wind turbine that determine compressor, close valve by electric expansion valve
The parameters such as the aperture of electric expansion valve, controlling party of the invention are determined after to reference opening amount according to the target exhaust temperature of compressor
Method can also provide the running environment to match for compressor in compressor operating, further increase the work effect of compressor
Rate and job stability improve the operational effect of air-conditioning.
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 parameter of the form and air-conditioning of the first fitting formula and the second fitting formula can be based on different application scenarios
It is adjusted, such as the second fitting formula can also be vy=kTao 2+ b etc..For another example, the number of temperature range and endpoint value are not one
At constant, those skilled in the art can be adjusted based on practical application scene, such as further segment in the section of [16,40]
For multiple sections, each section corresponds to different fitting formulas etc..For another example, target aperture can also be other of electric expansion valve
Opening value near aperture or reference opening amount, accordingly when target aperture is less than reference opening amount, compressor can be swollen in electronics
Swollen valve starts raising frequency after reaching target aperture, and when target opening value is more than reference opening amount, compressor can be in electronic expansion
Valve starts raising frequency before reaching target aperture.For another example, electric expansion valve can also be according to outdoor environment temperature after reaching reference opening amount
Correspondence between degree and/or the frequency and the aperture of electric expansion valve of compressor is adjusted, and the rotating speed of outer wind turbine may be used also
To be adjusted (such as following table according to the correspondence between the frequency of outdoor environment temperature and compressor and the rotating speed of outer wind turbine
3)。
3 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 one second fitting subformula, the second fitting subformula
Between can be coefficient difference, can also be the difference of formula.It is risen for example, the raising frequency stage of compressor may include three
Frequency sub-stage, each raising frequency sub-stage corresponding second fitting subformula is respectively vy1=k1Tao+b1、vy2=k2Tao+b2、vy3=
k3Tao+b3.After user selects refrigeration mode, control system is fitted subformula and calculates according to each second respectively accordingly to be compressed
Then the raising frequency speed of each raising frequency sub-stage of machine controls compressor and is risen successively according to the raising frequency speed of each raising frequency sub-stage
Frequently.The relationship for such as calculating the raising frequency speed of three raising frequency sub-stages is vy1>vy2>vy3(certainly, which may be other
Such as vy1<vy2<vy3Deng), then controlling compressor raising frequency in such a way that raising frequency speed is gradually reduced, realize air-conditioning fast-refrigerating
While, ensure that compressor oil return is normal, is gradually reduced process noise, prolongs the service life.
With reference to Fig. 1 to Fig. 3, 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 booting freeze → detect outdoor environment temperature be 40 DEG C → expansion valve is calculated according to first fitting formula
Close valve speed vp, the raising frequency speed v of compressor is calculated according to the second fitting formulay, while according to Tables 1 and 2, determining and stablizing work
Working frequency fwWith the rotating speed r of outer wind turbinew→ electric expansion valve is according to pass valve speed vpFast quick-closing valve, outer wind turbine is according to rotating speed rwFortune
When row → electric expansion valve closes valve to reference opening amount, compressor is according to raising frequency speed vyCarry out quick raising frequency → after a period of time
Compressor reaches stable working frequency fwAfter maintain the frequency run, the aperture B of electric expansion valve according to compressor target
Delivery temperature is adjusted, the rotating speed r of outer wind turbinewIt is adjusted according to table 3.
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 (10)
1. the control method of air-conditioning under a kind of refrigeration mode, the air-conditioning includes that compressor, expansion valve and outer wind turbine, feature exist
In the control method includes：
Obtain outdoor environment temperature；
According to the first fitting formula, the pass valve speed of the expansion valve is calculated；
According to the second fitting formula, calculate the compressor the raising frequency stage raising frequency speed；
It controls the expansion valve and closes valve to target aperture according to the pass valve speed；
While the expansion valve closes valve to the target aperture according to the pass valve speed, before or after, described in control
Compressor carries out raising frequency according to the raising frequency speed；
Wherein, first fitting formula is according to corresponding between the outdoor environment temperature and the pass valve speed of the expansion valve
Relationship determines；Second fitting formula is according to corresponding between the outdoor environment temperature and the raising frequency speed of the compressor
Relationship determines.
2. the control method of air-conditioning under refrigeration mode according to claim 1, which is characterized in that the control method is also wrapped
It includes：
Judge whether the frequency of the compressor reaches stable working frequency；
When the frequency of the compressor reaches the stable working frequency, controls the compressor and stop raising frequency；
Wherein, the stable working frequency is determined according to the correspondence of outdoor environment temperature and stable working frequency.
3. the control method of air-conditioning under refrigeration mode according to claim 1, which is characterized in that " obtain outdoor environment temperature
After the step of degree ", the control method further includes：
Judge whether the outdoor environment temperature is in preset temperature range；
When the outdoor environment temperature is in the temperature range, according to second fitting formula, the compressor is calculated
In the raising frequency speed in raising frequency stage.
4. the control method of air-conditioning under refrigeration mode according to claim 3, which is characterized in that the control method is also wrapped
It includes：
When the outdoor environment temperature is less than the minimum value of the temperature range, according to second fitting formula, according to institute
State temperature range minimum value calculate the compressor the raising frequency stage raising frequency speed；Or
When the outdoor environment temperature is more than the maximum value of the temperature range, according to second fitting formula, according to institute
State compressor described in the maximum value calculation of temperature range the raising frequency stage raising frequency speed.
5. the control method of air-conditioning under refrigeration mode according to claim 1, which is characterized in that the target aperture is institute
State the reference opening amount of expansion valve, " the expansion valve according to the pass valve speed close valve to the target aperture while, before
Or later, control the compressor according to the raising frequency speed carry out raising frequency " the step of further comprise：
When the aperture of the expansion valve reaches the reference opening amount, controls the compressor and risen according to the raising frequency speed
Frequently.
6. the control method of air-conditioning under refrigeration mode according to claim 1, which is characterized in that " controlling the expansion
Valve closes valve to target aperture according to the pass valve speed " the step of after, the control method further includes：
The aperture of the expansion valve is adjusted according to the target exhaust temperature of the compressor.
7. the control method of air-conditioning under refrigeration mode according to claim 1, which is characterized in that the control method is also wrapped
It 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.
8. the control method of air-conditioning under refrigeration mode according to any one of claim 1 to 7, which is characterized in that described
The raising frequency stage includes multiple raising frequency sub-stages, and second fitting formula is accordingly fitted subformula including multiple second, " according to
Second fitting formula, calculate the compressor the raising frequency stage raising frequency speed " further comprise：
It is fitted subformula according to each second, calculates separately the raising frequency speed of each raising frequency sub-stage of compressor.
9. the control method of air-conditioning under refrigeration mode according to claim 8, which is characterized in that " control the compressor
According to the raising frequency speed carry out raising frequency " the step of further comprise：
The compressor is controlled successively according to the continuous raising frequency of raising frequency speed of each raising frequency sub-stage.
10. the control method of air-conditioning under refrigeration mode according to claim 1, which is characterized in that the outdoor environment temperature
Degree is proportional with the pass valve speed of the expansion valve；And/or the liter of the outdoor environment temperature and the compressor
Frequency speed is proportional；And/or the raising frequency speed is the arbitrary value in 0.5Hz-30Hz.
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