CN107702281A - The control method and system of air-conditioning under low temperature and low humidity heating condition - Google Patents
The control method and system of air-conditioning under low temperature and low humidity heating condition Download PDFInfo
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- CN107702281A CN107702281A CN201710866381.5A CN201710866381A CN107702281A CN 107702281 A CN107702281 A CN 107702281A CN 201710866381 A CN201710866381 A CN 201710866381A CN 107702281 A CN107702281 A CN 107702281A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 66
- 238000010438 heat treatment Methods 0.000 title claims abstract description 54
- 230000007704 transition Effects 0.000 claims description 26
- 230000001133 acceleration Effects 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000005485 electric heating Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 17
- 239000000314 lubricant Substances 0.000 abstract description 8
- 238000005461 lubrication Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 46
- 239000010687 lubricating oil Substances 0.000 description 15
- 230000003247 decreasing effect Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 235000003642 hunger Nutrition 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000037351 starvation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/029—Control issues
- F25B2313/0294—Control issues related to the outdoor fan, e.g. controlling speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/16—Lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/26—Problems to be solved characterised by the startup of the refrigeration cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to air-conditioning technical field, and in particular to the control method and system of air-conditioning under a kind of low temperature and low humidity heating condition.Present invention seek to address that the problem of existing air-conditioned start quick heating effect of raising frequency control method is poor, lubricant effect difference.For this purpose, the control method of the present invention includes：Obtain environment temperature and ambient humidity；When environment temperature is less than design temperature and ambient humidity is no more than setting humidity, make compressor preheating；Preheating makes that outer blower fan starts and raising speed is to first object rotating speed after terminating；While outer blower fan starts raising speed, before or after, make the compressor start of air-conditioning；Make the compressor according to multiple setting speeds, stage by stage continuous raising frequency.The raising frequency time of compressor can be greatly shortened in above-mentioned control method while the normal oil return of guarantee compressor, reach quick heating, improve lubrication purpose, lift the comfortableness of air-conditioning, improvement Consumer's Experience.
Description
Technical field
The present invention relates to air-conditioning technical field, and in particular under a kind of low temperature and low humidity heating condition the control method of air-conditioning and
System.
Background technology
With the increasingly raising of living standard, also more and more higher, this requirement are in for requirement of the people for quality of life
Embody particularly evident on electrical appliance.By taking air-conditioning as an example, in order to meet the needs of user quickly heats, so as to bring in the winter time more
Comfortable usage experience, existing air-conditioning typically all can run the quick raising frequency of compressor to higher frequency in firm start.
In compressor operating, the refrigerant in compressor can be discharged promptly, be circulated in pipe-line system.In cyclic process,
Lubricating oil can together discharge compressor with refrigerant, enter in pipeline, and this parts of lubricating oil only discharged smoothly returns to
In compressor (i.e. oil return), the dynamic equilibrium of lubricating oil in whole system could be maintained, otherwise, compressor can damage because of oil starvation
It is bad.Most air-conditioning uses the set-up mode that oil eliminator is combined with oil return capillary in the market, will discharge the profit of compressor
Lubricating oil is separated by oil eliminator and returned to and then by oil return capillary in compressor.But for convertible frequency air-conditioner,
With the rise of compressor operating frequency, the velocity of discharge/speed of lubricating oil is also increasingly faster, when lubricating oil the velocity of discharge/
When speed exceedes maximum oil return speed/speed of oil return capillary, the phenomenon of oil starvation is just easily produced.Therefore it is normal in order to ensure
Oil return, during compressor is quickly ramped up to high frequency, it will usually force compressor in some or some fixed frequencies (oil return frequency
Rate) on continuous service for a period of time, treat that follow-up frequency of continuing rising is stablized in oil return.
Although above-mentioned set-up mode ensure that normal oil return, but force compressor one section of continuous service in oil return frequency
The set-up mode of time so that air-conditioning the raising frequency overlong time of compressor, slow down compressor in quick heating operations of starting shooting
The speed of maximum operation frequency is reached, also increases the time quickly heated after air-conditioning start, and then influences air-conditioning and quickly makes
The effect of heat, bad usage experience is brought for user.That is, existing air-conditioning start raising frequency control method exist due to
Caused by raising frequency time length the problem of quick heating effect difference.In addition, when outdoor environment temperature is relatively low in the winter time, there is also
The problem of lubricating oil viscosity denseness in compressor uprises, lubricant effect is deteriorated.
Correspondingly, this area needs a kind of control method of new air-conditioning to solve the above problems.
The content of the invention
In order to solve above mentioned problem of the prior art, deposited in the start raising frequency control method for being the existing air-conditioning of solution
Compressor lubrication effect difference when causing that quick heating effect is poor, environment temperature is relatively low because the raising frequency time is long the problem of,
The invention provides a kind of control method of air-conditioning under low temperature and low humidity heating condition, the control method comprises the following steps：
Obtain environment temperature and ambient humidity；
When the environment temperature is less than design temperature and the ambient humidity is no more than setting humidity, make the air-conditioning
Compressor preheating；
After the compressor preheating terminates, start the outer blower fan of the air-conditioning, and according to setting acceleration raising speed extremely
First object rotating speed；
While the outer blower fan starts raising speed, before or after, make the compressor start of the air-conditioning；
Make the compressor according to multiple raising frequency speed, stage by stage continuous raising frequency.
Under above-mentioned low temperature and low humidity heating condition in the optimal technical scheme of the control method of air-conditioning, the control method is also
Including：
After continuous raising frequency stage by stage, judge whether the compressor frequency reaches first object frequency；
When the compressor frequency reaches the first object frequency, the compressor is set to stop raising frequency.
Under above-mentioned low temperature and low humidity heating condition in the optimal technical scheme of the control method of air-conditioning, " in the outer blower fan
While starting raising speed, before or after, make the compressor start of the air-conditioning " the step of further comprise：
While the outer blower fan starts raising speed, make the compressor start of the air-conditioning.
Under above-mentioned low temperature and low humidity heating condition in the optimal technical scheme of the control method of air-conditioning, " make the compressor
The step of according to multiple setting speeds, continuous raising frequency stage by stage ", further comprises：
The compressor is set to carry out raising frequency according to the first raising frequency speed；
Judge whether the compressor frequency reaches transition frequency；
When the compressor frequency reaches the transition frequency, the compressor is set to be risen according to the second raising frequency speed
Frequently；
Wherein, the transition frequency is less than the first object frequency.
Under above-mentioned low temperature and low humidity heating condition in the optimal technical scheme of the control method of air-conditioning, the first raising frequency speed
Degree is more than the second raising frequency speed；And/or the maximum operation frequency that the first object frequency is the compressor；And
And/or the maximum functional rotating speed that first object rotating speed described in person is the outer blower fan；And/or the design temperature is 5 DEG C；
And/or the humidity that sets is 60%；And/or the step of " compressor preheating for making the air-conditioning ", passes through electrical heating
Mode performs.
Under above-mentioned low temperature and low humidity heating condition in the optimal technical scheme of the control method of air-conditioning, the control method is also
Including：
Obtain ambient parameter；
When the ambient parameter reaches target component, the compressor is set to be downconverted to the second target frequency, and make institute
The rotating speed for stating outer blower fan is reduced to the second rotating speed of target.
Under above-mentioned low temperature and low humidity heating condition in the optimal technical scheme of the control method of air-conditioning, the ambient parameter is
The environment temperature or the ambient humidity, the target component are accordingly target temperature or target humidity.
Present invention also offers a kind of control system of air-conditioning under low temperature and low humidity heating condition, the control system includes：
Acquisition module, it is used to obtain environment temperature and ambient humidity；
First control module, it is used to be less than design temperature in the environment temperature and the ambient humidity is no more than setting
During humidity, make the compressor preheating of the air-conditioning；
Second control module, it is used for after the compressor preheating terminates, and starts the outer blower fan of the air-conditioning, and press
According to setting acceleration raising speed to first object rotating speed；
3rd control module, it is used for the compressor start for while the outer blower fan starts raising speed, making the air-conditioning,
And make the compressor according to multiple setting speeds, stage by stage continuous raising frequency, and reach first object frequency in compressor frequency
During rate, the compressor is set to stop raising frequency；
Judge module, it is used to judge whether the environment temperature be less than the design temperature, the ambient humidity
No more than the setting humidity, the outer blower fan whether raising speed to the first object rotating speed and the compressor frequency whether
Reach the first object frequency.
Under above-mentioned low temperature and low humidity heating condition in the optimal technical scheme of the control system of air-conditioning, the 3rd control mould
Block makes the compressor according to multiple setting speeds continuous raising frequency stage by stage as follows：
3rd control module makes the compressor carry out raising frequency according to the first raising frequency speed；
The judge module judges whether the compressor frequency reaches transition frequency；
When the compressor frequency reaches the transition frequency, the 3rd control module makes the compressor according to
Two raising frequency speed carry out raising frequency；
Wherein, the transition frequency is less than the first object frequency；And/or
The first raising frequency speed is more than the second raising frequency speed.
Under above-mentioned low temperature and low humidity heating condition in the optimal technical scheme of the control system of air-conditioning,
The acquisition module is additionally operable to obtain ambient parameter；
The judge module is additionally operable to judge whether the ambient parameter reaches target component；
Second control module is additionally operable to, when the ambient parameter reaches the target component, make the outer blower fan
Rotating speed is reduced to the second rotating speed of target；
3rd control module is additionally operable to when the ambient parameter reaches the target component, drops the compressor
Frequently to the second target frequency；
Wherein, the ambient parameter is the environment temperature or the ambient humidity, and the target component is accordingly mesh
Mark temperature or target humidity.
It will be appreciated to those of skill in the art that in the preferred technical solution of the present invention, low temperature and low humidity heating condition
The control method of lower air-conditioning includes：Obtain environment temperature and ambient humidity；It is less than design temperature and ambient humidity in environment temperature
During no more than setting humidity, make the compressor preheating of air-conditioning；After the compressor preheating terminates, open the outer blower fan of air-conditioning
It is dynamic, and according to setting acceleration raising speed to first object rotating speed；While outer blower fan starts raising speed, open the compressor of air-conditioning
It is dynamic；Make compressor according to multiple setting speeds, stage by stage continuous raising frequency；Judge whether compressor frequency reaches first object frequency
Rate；When compressor frequency reaches first object frequency, compressor is set to stop raising frequency.By cancel during compressor raising frequency
Continuous running phases in oil return frequency, then make compressor upon actuation with different raising frequency speed continuous raising frequency stage by stage,
The raising frequency time of compressor, and then the purpose quickly heated can be greatly shortened in the present invention, lift the comfortableness of air-conditioning,
Improve Consumer's Experience.And by obtaining environment temperature and ambient humidity before compressor start, and be less than in environment temperature
Design temperature and ambient humidity, which are not more than when setting humidity, first to be allowed compressor preheating and terminates relief compression in compressor preheating
The control method that machine and outer blower fan start simultaneously, can create good condition of work for compressor in advance, and as compressor is pre-
Heat can make the reduction of compressor lubricant oil viscosity, improve the lubricant effect and running stability of compressor；Compressor and exogenous wind
Machine starts simultaneously can be such that compressor starts immediately when ambient humidity is little and carry out raising frequency, be needed before eliminating compressor start
The step of first opening outer fan radiating (to avoid quick frosting), the raising frequency time of compressor is further shorten, improve pressure
Heating effect after the startup of contracting machine.
Specifically, when environment temperature is less than design temperature and ambient humidity no more than setting humidity, first make compressor pre-
Heat, compressor and outer blower fan are made after preheating terminates while is started, outer blower fan is kept in this rotating speed, compression after reaching maximum (top) speed
Machine start after be first according to the first raising frequency speed carry out raising frequency, when compressor frequency reaches transition frequency, make compressor according to
Second raising frequency speed carries out raising frequency, when compressor frequency reaches first object frequency, compressor is stopped raising frequency.Wherein, mistake
Cross frequency and be less than first object frequency, the first raising frequency speed is more than the second raising frequency speed.Preferably, first object frequency is compression
The maximum operation frequency of machine.Present inventor is less than design temperature and environment by experiment is found repeatedly in environment temperature
After first allowing compressor preheating for a period of time when humidity is no more than setting humidity, and then allow and compressor and outer blower fan while start,
And compressor is set to carry out raising frequency with raising frequency two or more stages of speed point first quick and back slow, the present invention can not only pass through liter
The phasic Chang of frequency speed ensures the normal oil return of compressor, while compressor raising frequency can also be greatly shortened to maximum functional frequency
The time of rate, meets the needs of user quickly heats.
Brief description of the drawings
With reference to the accompanying drawings come describe the present invention low temperature and low humidity heating condition under air-conditioning control method and system.Accompanying drawing
In：
Fig. 1 is the schematic flow sheet of the control method of air-conditioning under low temperature and low humidity heating condition of the invention；
Fig. 2 is the compressor of control method of air-conditioning and the compression of prior art under low temperature and low humidity heating condition of the invention
The raising frequency process contrast schematic diagram of machine；
Fig. 3 is that the control method of air-conditioning under low temperature and low humidity heating condition of the invention is less than 5 DEG C, environmental wet in environment temperature
When degree is not more than 60%, the control logic schematic diagram of compressor, outer blower fan and expansion valve.
Embodiment
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 present invention is to combine compressor to set the embodiment in two raising frequency stages to be described, but this setup is not one
Into constant, 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
Application scenarios, as compressor can also set three even more raising frequency stages.
With reference first to Fig. 1, Fig. 1 is the flow signal of the control method of air-conditioning under low temperature and low humidity heating condition of the invention
Figure.
As shown in figure 1, in order to solve present in now air-conditioned start raising frequency control method because the raising frequency time is long and
Cause quick heating effect poor and compressor lubrication effect is poor when environment temperature is relatively low, the invention provides a kind of low temperature is low
The control method of air-conditioning under wet heating condition, the control method mainly include the following steps that：
S100, environment temperature and ambient humidity are obtained, the starting switch of air-conditioning is pressed such as user to be made air-conditioning start shooting and select
After selecting heating mode, air-conditioning obtains environment temperature and ambient humidity, wherein environment by Hygrothermograph or Temperature Humidity Sensor etc.
Temperature, ambient humidity can refer to the temperature and relative humidity of outdoor environment；
S200, when environment temperature is less than design temperature and ambient humidity no more than setting humidity, make the compressor of air-conditioning
Preheating, such as by way of setting heat tape to be powered or be powered directly to compressor in compressor, make compressor preheating
1min, and then reduce the lubricating oil viscosity denseness in compressor, it is preferable that design temperature is 5 DEG C, sets humidity as 60%；
S300, after compressor preheating terminates, the expansion valve opening of air-conditioning is adjusted to first object aperture, such as in environment
When humidity is not more than a certain relative humidity, expansion valve opening is first decreased to reference opening amount according to closing valve speed from 480 steps, then from
Reference opening amount increases to first object aperture according to Valve opening velocity, it is preferable that expansion valve is electric expansion valve or other can be controlled
The expansion valve of aperture processed；
It should be noted that the aperture regulation of electric expansion valve is driven by stepper motor, stepper motor rotates most
Small angle range is referred to as a step, and therefore, the aperture regulation of electric expansion valve is typically all to be weighed by " step ".Such as expansion valve
Aperture is 200 steps.I.e. stepper motor drives expansion valve to turn to the 200th angular unit.Generally it is closed in air-conditioning
When, it is balance system pressure, expansion valve can all be in larger aperture, as expansion valve is closed in air-conditioning in the present invention
When aperture can be 480 steps.And reference opening amount is then according to operational mode setting and outdoor temperature and compressor frequency phase
The aperture answered, the setting of reference opening amount contribute to system pressure difference to establish, and realize air conditioner quickly cooling and speed heat.As benchmark of the present invention is opened
Degree can be 280 steps.That is, while outer blower fan starts, expansion valve opening is first from 480 steps according to closing valve speed such as
200P/s (i.e. 200 steps/second) is decreased to 280 steps, then increases to first object from 280 steps according to Valve opening velocity such as 40P/s again
Aperture (such as 400 steps)；
S400, during expansion valve opening is adjusted to first object aperture, start the outer blower fan of air-conditioning, and press
According to setting acceleration raising speed to first object rotating speed, it is preferable that when expansion valve opening reaches reference opening amount, make outer blower fan according to
The acceleration for improving 1000r/min each seconds starts, and the first object rotating speed for reaching 3000r/min at 3 seconds, preferably
Ground, first object rotating speed are the maximum functional rotating speed of outer blower fan；
S500, while outer blower fan starts raising speed, before or after, make the compressor start of air-conditioning, it is preferable that outside
While the beginning raising speed of blower fan, make the compressor start of air-conditioning；
S600, making compressor, continuous raising frequency, such as after compressor start, makes compression stage by stage according to multiple setting speeds
Machine carries out raising frequency according to the first raising frequency speed, and the second raising frequency is immediately switched to after running to a certain frequency or after operation a period of time
Speed continues raising frequency；
S700, judge whether compressor frequency reaches first object frequency, such as obtain the current frequency of compressor in real time, and
By current frequency compared with first object frequency；
S800, when compressor frequency reaches first object frequency, make compressor stop raising frequency, such as reach in current frequency
During first object frequency, compressor is maintained first object frequency and work on.Preferably, first object aperture is and compression
The expansion valve opening that the first object frequency of machine matches, that is to say, that compressor start stage by stage continuous raising frequency to first
During target frequency, expansion valve opening also increases to first object aperture from reference opening amount just.
By foregoing description as can be seen that the control method of the air-conditioning of the present invention in environment temperature by being less than 5 DEG C and ring
When border humidity is not more than 60%, the control method that makes compressor first preheat can reduce the lubricating oil viscosity denseness in compressor,
And then lubricant effect during raising compressor operating.Make expansion valve after preheating terminates prior to compressor start, and in expansion valve
Make when reaching reference opening amount compressor and outer blower fan and meanwhile start control method, on the one hand can make in advance expansion valve opening with
Working frequency during compressor start matches, avoid expansion valve together start with compressor caused by expansion valve opening with pressure
The unmatched situation of contracting machine occurs, and on the other hand compressor can be made to be actuated for raising frequency immediately when ambient humidity is little, saves
The step of having gone before compressor start to need first to open outer fan radiating (to avoid quick frosting), shorten the raising frequency of compressor
Time improves the heating effect after compressor start.And it is continuous stage by stage with different raising frequency speed upon actuation to make compressor
The control method of raising frequency, then the raising frequency time of compressor can be greatly shortened, improve the heating effect after compressor start, and then
Reach the purpose quickly heated.In other words, present invention eliminates during compressor raising frequency in oil return frequency continuous service
Process, then by advance be compressor preheating, adjustment expansion valve opening to reference opening amount, make compressor and outer blower fan simultaneously
Start, and the control method of compressor raising frequency speed is controlled during compressor raising frequency, ensure that the normal oil return of compressor
While, additionally it is possible to the quick raising frequency of compressor is completed, is solved present in existing start raising frequency control method due to rising
Quick the problem of heating effect is poor, lubricant effect is bad, improve the comfortableness of air-conditioning, substantially improve caused by frequency time length
Consumer's Experience.
Certainly, first object rotating speed is not only limited to a kind of form of maximum functional rotating speed, can improve compressor heat sink strip
In the case of part, the first object rotating speed can be arranged to any rational numerical value by those skilled in the art, so that it meets
More specifical application scenarios, as first object rotating speed can also be close to outer blower fan maximum functional rotating speed a certain tachometer value or
The maximum (top) speed value that outer blower fan can reach under outer boundary's environment temperature.Similarly, when environment temperature, ambient humidity and preheating
Between setting be not only limited to 5 DEG C, 60% and a kind of modes of 1min, it is different that those skilled in the art can be based on different regions
Weather conditions are adjusted, and design temperature such as is arranged into 3 DEG C or 7 DEG C, and setting humidity is arranged into 55% or 65%, will be preheated
Time is arranged to 30s or 2min etc..
Referring to Fig. 2, principle of the invention is expanded on further.Wherein, Fig. 2 is the low temperature and low humidity heating condition of the present invention
The raising frequency process contrast schematic diagram of the compressor of the control method of lower air-conditioning and the compressor of prior art.In Fig. 2, solid line represents
The raising frequency process of compressor in the control method of the present invention, dotted line represent the raising frequency process of compressor in the prior art.
Entered as shown in Fig. 2 in the prior art, as compressor start is latter using fixed raising frequency speed V (such as 1Hz/s)
Row raising frequency, and it is provided with the first oil return frequency f during raising frequency in order to ensure the normal oil return of compressor1With the second oil return
Frequency f2, when compressor raising frequency to the first oil return frequency f1When, the lubricating oil in compressor is in or will be in oil starvation state,
Therefore compressor maintains a period of time in this frequency, ensures to be further continued for continuing with raising frequency speed V after the stable oil return of compressor
Raising frequency.Similarly, in compressor raising frequency to the second oil return frequency f2, and a period of time is maintained in this frequency, ensure that compressor is steady
The follow-up frequency of continuing rising of oil return is determined, until compressor reaches peak frequency fmaxAfter stop raising frequency.As stated in the Background Art, such liter
Frequency mode is due in the first oil return frequency f1With the second oil return frequency f2A period of time is maintained, therefore has had a strong impact on compressor
Raising frequency speed, although ensure that the stable oil return of compressor, can not meet the needs of quickly heating well.
With continued reference to Fig. 2, as the preferred embodiment of the present invention, the continuous raising frequency process of compressor can be divided into two
The individual stage, wherein, first stage compressor is with the first raising frequency speed V1Raising frequency is carried out, second is entered when raising frequency to transition frequency
Stage.Second stage compressor is with the second raising frequency speed V2Raising frequency is carried out, during raising frequency to first object frequency, stops raising frequency.It is excellent
Selection of land, transition frequency could be arranged to the first oil return frequency f1.First raising frequency speed V1More than the second raising frequency speed V2, such as can be with
First raising frequency speed is arranged to 1.2Hz/s, the second raising frequency speed is arranged to 0.5Hz/s.
That is, in the control method of the present invention, S600 may further include following steps again：
S610, make compressor according to the first raising frequency speed V1Carry out raising frequency, as the control system of air-conditioning make compressor according to
1.2Hz/s raising frequency speed carries out raising frequency；
S620, judge whether compressor frequency reaches transition frequency, transition frequency is such as arranged to the first oil return frequency f1,
Control system judges whether the current frequency of compressor reaches the first oil return frequency f1；
S630, in compressor frequency reach transition frequency f1When, make compressor according to the second raising frequency speed V2Carry out raising frequency,
The current frequency for such as judging compressor in control system reaches f1When, make compressor continue to rise according to 0.5Hz/s raising frequency speed
Frequently, to ensure the stable oil return of compressor on the premise of continuous raising frequency, complete the quick heating of air-conditioning.
Preferably, transition frequency f1Less than first object frequency, and first object set of frequency is the maximum work of compressor
Working frequency fmax。
The advantages of above control method, is：By controlling the raising frequency speed during compressor raising frequency so that compressor
During with different raising frequency speed raising frequencies, the speed/rate for discharging the lubricating oil of compressor also correspondingly changes,
And then oil return speed/speed of oil return capillary is adapted to, ensure that the oil return of compressor is stable.Specifically, by making compressor
In transition frequency f1Change raising frequency speed, that is, carry out the controlling party of raising frequency in two stages with raising frequency speed first quick and back slow
Method so that compressor is with the first raising frequency speed V1During raising frequency, the speed/rate of the discharge compressor of lubricating oil is met or exceeded
Oil return speed/speed of oil return capillary, the lubricating oil in compressor gradually decrease.When reaching transition frequency f1When, compressor
Then according to the second raising frequency speed V2Raising frequency is carried out, the lubricating oil for now discharging compressor greatly reduces, lubricating oil discharge compression
The speed/rate of machine is less than oil return speed/speed of oil return capillary, and then the lubricants capacity in compressor is ensured.
That is the present invention can ensure the normal oil return of compressor by the change of raising frequency speed, while by cancelling in oil return frequency
The control mode of continuous running phases has correspondingly speeded up the raising frequency speed of compressor, enable compressor quickly raising frequency to most
Big working frequency, and then run with maximum operation frequency, meet the needs of user quickly heats.Reference picture 2 can significantly be seen
Go out, tested repeatedly through inventor, the time that compressor of the invention reaches maximum operation frequency considerably less than presses in the prior art
Contracting machine reaches the time of maximum operation frequency.
Method is preferably controlled it is pointed out that above-mentioned and concrete numerical value is used merely to illustrate the principle of the present invention, and
It is not intended in limiting the scope of the invention, on the premise of without departing from the principle of the invention, those skilled in the art can be with
Any form of adjustment is done to above-mentioned parameter, as long as the technical scheme after adjustment can ensure the premise of the normal oil return of compressor
The lower condition for improving raising frequency speed.Such as the raising frequency stage further can also be divided into three phases, each stage is with difference
Raising frequency speed (the fast mode of such as speed) carry out raising frequency；Transition frequency according to the first oil return frequency can also float downward
It is dynamic；The maximum operation frequency of the uncompressed machine of first object frequency, but value close to maximum operation frequency etc..
In addition, preferably to improve the experience that user uses air-conditioning, when compressor is worked with maximum operation frequency, this hair
The control method of bright air-conditioning can also comprise the following steps：
S900, ambient parameter is obtained, such as obtain current environment temperature (such as indoor temperature)；
S1000, reach in ambient parameter/close to target component when, compressor is downconverted to the second target frequency, make simultaneously
The rotating speed of outer blower fan is reduced to the second rotating speed of target, expansion valve opening is decreased to the second target aperture, and such as temperature reaches indoors
The target temperature of user's setting or during close to target temperature, makes compressor be downconverted to rated operation frequency or be reduced to and extraneous ring
The working frequency that border temperature matches, while the rotating speed of outer blower fan is reduced to nominal operation rotating speed or is matched with compressor
Working speed and the aperture of expansion valve is set to be decreased to the aperture to match with the present operating frequency of compressor.
So have the advantage that：After air-conditioning quickly heats a period of time, indoor temperature can rise accordingly, work as room
Interior temperature reaches/close to user's setting temperature when, reached the purpose of quick heating, compressor does not just have to work on
In maximum operation frequency, outer blower fan need not naturally also be operated in maximum (top) speed and be radiated, and expansion valve is without being operated in and press
In the first object aperture of contracting machine matching.At this moment by compressor be downconverted to rated operation frequency or with current outdoor environment (such as room
Outer temperature) working frequency that more matches, and by the rotating speed of outer blower fan be reduced to nominal operation rotating speed or with compressor phase
The rotating speed matched somebody with somebody, and the aperture that the aperture of expansion valve is decreased to match with compressor, can not only ensure the normal of air-conditioning
Work, and effectively extend the working life of compressor, outer blower fan and expansion valve.
Certainly, ambient parameter and corresponding target component are not unalterable, can also be ambient humidity (as outdoor is wet
Degree) and the target humidity etc. that sets of user.
Present invention also offers a kind of control system of air-conditioning under low temperature and low humidity heating condition, the control system is mainly wrapped
Include：
Acquisition module, it is used to obtain environment temperature and ambient humidity, after air-conditioning start selection heating mode, gathers mould
Block gathers the temperature and relative humidity of outdoor environment；
First control module, it is used for when environment temperature is less than design temperature and ambient humidity is not more than setting humidity,
Make the compressor preheating of air-conditioning, such as when environment temperature is less than 5 DEG C and ambient humidity is not more than 60%, the first control module makes pressure
Powered off again after the heat tape energization 1min set on contracting machine；
Second control module, it is used to, when expansion valve opening reaches reference opening amount, make the outer blower fan of air-conditioning to start, and presses
According to setting acceleration raising speed to first object rotating speed；
3rd control module, it is used to while outer blower fan starts raising speed, make compressor start, and make compressor according to
Multiple setting speeds, continuous raising frequency, and when compressor frequency reaches first object frequency stage by stage, compressor is set to stop rising
Frequently；
4th control module, it is used for after compressor preheating terminates, and makes the expansion valve opening of air-conditioning according to the pass of setting
Valve speed is decreased to reference opening amount, and when expansion valve opening reaches reference opening amount, makes expansion valve opening opening according to setting
Valve speed increases to first object aperture；
Judge module, it is used to judge whether environment temperature is less than design temperature, ambient humidity wet no more than setting
Whether degree, expansion valve reach reference opening amount, outer blower fan, and whether raising speed to first object rotating speed and compressor reaches first
Target frequency.
Wherein, the 3rd control module makes compressor according to multiple setting speeds as follows, stage by stage continuous raising frequency：
3rd control module makes compressor according to the first raising frequency speed V1Carry out raising frequency；
Judge module judges whether compressor frequency reaches transition frequency f1；
Reach transition frequency f in compressor frequency1When, the 3rd control module makes compressor according to the second raising frequency speed V2Enter
Row raising frequency；
Preferably, the first raising frequency speed V1More than the second raising frequency speed V2, transition frequency f1Less than first object frequency, and
And first object frequency is the maximum operation frequency f of compressormax, first object aperture be and maximum operation frequency fmaxMatch
Expansion valve opening.
In addition, acquisition module is additionally operable to obtain ambient parameter, outdoor/room is such as obtained using temperature/humidity sensor in real time
Interior temperature and outdoor/indoor humidity etc.；
After acquisition module obtains ambient parameter, judge module is additionally operable to judge whether the ambient parameter reaches target ginseng
Number, such as target component are the target temperature of the heating of user's setting；
Second control module is additionally operable to when ambient parameter reaches target component, make the rotating speed of outer blower fan be reduced to the second mesh
Mark rotating speed；3rd control module is additionally operable to, when ambient parameter reaches target component, make compressor be downconverted to the second target frequency；
4th control module is additionally operable to when ambient parameter reaches target component, expansion valve opening is decreased to the second target aperture；Such as
When temperature reaches the target temperature of user's setting indoors, the second control module makes the rotating speed of outer blower fan be down to nominal operation turn
Speed, the 3rd control module make compressor be downconverted to rated operation frequency, and the 4th control module makes expansion valve opening be decreased to and press
The aperture that contracting machine rated operation frequency matches.
It will be appreciated to those of skill in the art that the first control module, the second control module, the 3rd control module,
Four control modules and the physical form of judge module can be independent of each other, naturally it is also possible to be integrated into a physics mould
Functional unit on block.Control system such as air-conditioning includes memory and processor, and is stored in memory and can locate
The computer program run on reason device, the computer program can complete above-mentioned first control module, the second control module, the 3rd
The function of control module, the 4th control module and judge module.
With reference to Fig. 3 to the control method of air-conditioning and the operation principle of system under the low temperature and low humidity heating condition of the present invention
It is described briefly.Fig. 3 is that the control method of air-conditioning under low temperature and low humidity heating condition of the invention is less than 5 DEG C, ring in environment temperature
When border humidity is not more than 60%, the control logic schematic diagram of compressor, outer blower fan and expansion valve.
As shown in figure 3, air-conditioning, in heating mode, outer blower fan, the course of work of expansion valve compressor can be：
The outdoor temperature of air-conditioning start heating → acquisition and relative humidity → in outdoor temperature are less than 5 DEG C and relative humidity not
During more than 60%, make the heat tape of compressor according to voltage U1' be powered → through T0Heat tape powers off after time interval, expansion
Valve is according to pass valve speed V21' from aperture B1' start to reduce aperture → through T1After time interval, expansion valve opening reaches reference opening amount
B'2, compressor starts simultaneously with outer blower fan, and expansion valve is according to Valve opening velocity V22' increase aperture.Wherein, compressor is according to raising frequency
Speed V11' raising frequency, outer blower fan is according to acceleration a1' improve rotating speed and reaching maximum functional rotating speed n1' when keep maximum functional
Rotating speed is run, → through T2Compressor frequency reaches transition frequency f after time interval1' when, with raising frequency speed V12' continue raising frequency, it is swollen
Swollen valve continues according to Valve opening velocity V22' increase aperture → through T3Compressor frequency reaches maximum operation frequency f after time interval2'
And stopping raising frequency, expansion valve opening reaches and f2' matching B3' and stably in this aperture → through T4Indoor temperature after time interval
Reach the design temperature of user, compressor is with frequency reducing speed V13' frequency reducing, while outer blower fan is with acceleration a2' reduction rotating speed is carried out,
Expansion valve is to close valve speed V23' reduction aperture → through T5Compressor frequency is down to rated operation frequency f after time interval3' and tie up
Hold in this frequency, while outer rotation speed of fan is down to nominal operation rotating speed n1' and maintain in this frequency, expansion valve opening be decreased to
f3' matching B'4And maintain in this frequency.
Above-mentioned preferred embodiment, the control method of air-conditioning mainly include：Obtain outdoor temperature and relative humidity；
Outdoor temperature is less than 5 DEG C and when relative humidity is not more than 60%, makes compressor preheating；After compressor preheating terminates, make expansion
Valve closes valve speed according to setting and reduces aperture to reference opening amount；When expansion valve opening reaches reference opening amount, make compressor and outer
Blower fan starts simultaneously, and outer blower fan is according to the acceleration raising speed of setting to maximum functional rotating speed, and compressor is according to the first raising frequency speed
With the second continuous raising frequency of raising frequency speed, expansion valve increases to the aperture to match with compressor frequency according to Valve opening velocity；Judge
Whether the frequency of compressor reaches maximum operation frequency；Stop raising frequency after the frequency of compressor reaches maximum operation frequency, together
When expansion valve reach the aperture to match with maximum operation frequency.Wherein, the first raising frequency speed is more than the second raising frequency speed.Air-conditioning
Control system include the first control module, the second control module, the 3rd control module, the 4th control module, judge module with
And acquisition module.By first making compressor preheating when outdoor temperature is not more than 60% less than 5 DEG C, relative humidity, in compressor
Preheating first adjusts expansion valve after terminating, and when expansion valve opening is decreased to reference opening amount while opens compressor and outer blower fan, swollen
Swollen valve opening is increased to the aperture matched with compressor and compressor is entered in two stages with raising frequency speed first quick and back slow
The control method of row raising frequency so that the present invention can make compressor by making compressor preheating improve the lubricant effect of compressor
The aperture of expansion valve and compressor match, realized the quick startup of compressor during startup, and pass through compressor raising frequency speed
Change while ensure compressor normal oil return, additionally it is possible to quick raising frequency is to maximum operation frequency, and then with maximum functional frequency
Rate is run, and is met the needs of user quickly heats, is greatly promoted Consumer's Experience.
So far, combined preferred embodiment shown in the drawings describes technical scheme, still, this area
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these embodiments.Without departing from this
On the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to correlation technique feature, these
Technical scheme after changing or replacing it is fallen within protection scope of the present invention.
Claims (10)
1. the control method of air-conditioning under a kind of low temperature and low humidity heating condition, it is characterised in that the control method includes following step
Suddenly：
Obtain environment temperature and ambient humidity；
When the environment temperature is less than design temperature and the ambient humidity is no more than setting humidity, make the compression of the air-conditioning
Machine preheats；
After the compressor preheating terminates, start the outer blower fan of the air-conditioning, and according to setting acceleration raising speed to first
Rotating speed of target；
While the outer blower fan starts raising speed, before or after, make the compressor start of the air-conditioning；
Make the compressor according to multiple raising frequency speed, stage by stage continuous raising frequency.
2. the control method of air-conditioning under low temperature and low humidity heating condition according to claim 1, it is characterised in that the control
Method also includes：
After continuous raising frequency stage by stage, judge whether the compressor frequency reaches first object frequency；
When the compressor frequency reaches the first object frequency, the compressor is set to stop raising frequency.
3. the control method of air-conditioning under low temperature and low humidity heating condition according to claim 2, it is characterised in that " described
While outer blower fan starts raising speed, before or after, make the compressor start of the air-conditioning " the step of further comprise：
While the outer blower fan starts raising speed, make the compressor start of the air-conditioning.
4. the control method of air-conditioning under low temperature and low humidity heating condition according to claim 2, it is characterised in that " make described
Compressor is according to multiple setting speeds, continuous raising frequency stage by stage " the step of further comprise：
The compressor is set to carry out raising frequency according to the first raising frequency speed；
Judge whether the compressor frequency reaches transition frequency；
When the compressor frequency reaches the transition frequency, the compressor is set to carry out raising frequency according to the second raising frequency speed；
Wherein, the transition frequency is less than the first object frequency.
5. the control method of air-conditioning under low temperature and low humidity heating condition according to claim 4, it is characterised in that
The first raising frequency speed is more than the second raising frequency speed；And/or
The first object frequency is the maximum operation frequency of the compressor；And/or
The first object rotating speed is the maximum functional rotating speed of the outer blower fan；And/or
The design temperature is 5 DEG C；And/or
The humidity that sets is 60%；And/or
The step of " compressor preheating for making the air-conditioning ", is performed by Electric heating.
6. the control method of air-conditioning, its feature exist under low temperature and low humidity heating condition according to any one of claim 1 to 5
In the control method also includes：
Obtain ambient parameter；
When the ambient parameter reaches target component, the compressor is downconverted to the second target frequency, and make described outer
The rotating speed of blower fan is reduced to the second rotating speed of target.
7. the control method of air-conditioning under low temperature and low humidity heating condition according to claim 6, it is characterised in that the environment
Parameter is the environment temperature or the ambient humidity, and the target component is accordingly target temperature or target humidity.
8. the control system of air-conditioning under a kind of low temperature and low humidity heating condition, it is characterised in that the control system includes：
Acquisition module, it is used to obtain environment temperature and ambient humidity；
First control module, it is used to be less than design temperature in the environment temperature and the ambient humidity is no more than setting humidity
When, make the compressor preheating of the air-conditioning；
Second control module, it is used for after the compressor preheating terminates, and starts the outer blower fan of the air-conditioning, and according to setting
Acceleration raising speed is determined to first object rotating speed；
3rd control module, it is used to while the outer blower fan starts raising speed, make the compressor start of the air-conditioning, and make
The compressor is according to multiple setting speeds, continuous raising frequency, and when compressor frequency reaches first object frequency stage by stage,
The compressor is set to stop raising frequency；
Judge module, it is used to judge whether the environment temperature is less than the design temperature, the ambient humidity little
In the setting humidity, whether raising speed to the first object rotating speed and the compressor frequency reaches the outer blower fan
The first object frequency.
9. the control system of air-conditioning under low temperature and low humidity heating condition according to claim 8, it is characterised in that the described 3rd
Control module makes the compressor according to multiple setting speeds continuous raising frequency stage by stage as follows：
3rd control module makes the compressor carry out raising frequency according to the first raising frequency speed；
The judge module judges whether the compressor frequency reaches transition frequency；
When the compressor frequency reaches the transition frequency, the 3rd control module makes the compressor according to second liter
Frequency speed carries out raising frequency；
Wherein, the transition frequency is less than the first object frequency；And/or
The first raising frequency speed is more than the second raising frequency speed.
10. the control system of air-conditioning under low temperature and low humidity heating condition according to claim 8, it is characterised in that
The acquisition module is additionally operable to obtain ambient parameter；
The judge module is additionally operable to judge whether the ambient parameter reaches target component；
Second control module is additionally operable to the rotating speed for when the ambient parameter reaches the target component, making the outer blower fan
It is reduced to the second rotating speed of target；
3rd control module is additionally operable to, when the ambient parameter reaches the target component, be downconverted to the compressor
Second target frequency；
Wherein, the ambient parameter is the environment temperature or the ambient humidity, and the target component is accordingly target temperature
Degree or target humidity.
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