CN107631430A - The control method and system of air-conditioning under low-temperature heating operating mode - Google Patents
The control method and system of air-conditioning under low-temperature heating operating mode Download PDFInfo
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- CN107631430A CN107631430A CN201710866973.7A CN201710866973A CN107631430A CN 107631430 A CN107631430 A CN 107631430A CN 201710866973 A CN201710866973 A CN 201710866973A CN 107631430 A CN107631430 A CN 107631430A
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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 heating operating mode.Present invention seek to address that the problem of quick heating effect present in existing air-conditioned start raising frequency control method is poor, lubricant effect difference.For this purpose, the control method of the present invention includes：Obtain environment temperature；When environment temperature is less than design temperature, make compressor preheating；Preheating makes that outer blower fan starts and raising speed is to first object rotating speed after terminating；Make the compressor start of air-conditioning during outer blower fan reaches first object rotating speed；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 set-up mode while the normal oil return of guarantee compressor, reach quick heating, improve the purpose of lubrication, 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 to the control method of air-conditioning and is under a kind of low-temperature heating operating mode
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
Reach the speed of maximum operation frequency, also increase the time quickly heated after air-conditioning start, and then influence air-conditioning and quickly make
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
Cause quick heating effect poor and compressor lubrication effect is poor when environment temperature is relatively low asks because the raising frequency time is long
Topic, the invention provides a kind of control method of air-conditioning under low-temperature heating operating mode, the control method comprises the following steps：
Obtain environment temperature；
When the environment temperature is less than design temperature, make the compressor preheating of the air-conditioning；
After the compressor preheating terminates, start the outer blower fan of the air-conditioning, and according to the acceleration raising speed of setting
To first object rotating speed；
During the outer blower fan raising speed to the first object rotating speed, 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 heating operating mode in the optimal technical scheme of the control method of air-conditioning, the control method is also wrapped
Include：
After continuous raising frequency stage by stage, judge whether 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 heating operating mode in the optimal technical scheme of the control method of air-conditioning, " in the outer blower fan raising speed
To the compressor start for during the first object rotating speed, making the air-conditioning " the step of further comprise：
When the outer blower fan reaches the first object rotating speed, make the compressor start of the air-conditioning.
Under above-mentioned low-temperature heating operating mode in the optimal technical scheme of the control method of air-conditioning, " make the compressor according to
The step of multiple setting speeds, stage by stage continuous raising frequency ", 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 heating operating mode in the optimal technical scheme of the control method of air-conditioning, the first raising frequency speed is big
In the second raising frequency speed；And/or the maximum operation frequency that the first object frequency is the compressor；And/
Or the maximum functional rotating speed that the first object rotating speed is the outer blower fan；And/or the design temperature is 5 DEG C；And
And/or the step of person's " compressor preheating for making the air-conditioning ", is performed by Electric heating.
Under above-mentioned low-temperature heating operating mode in the optimal technical scheme of the control method of air-conditioning, the control method is also wrapped
Include：
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 heating operating mode in the optimal technical scheme of the control method of air-conditioning, the ambient parameter is described
Environment temperature or 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 heating operating mode, the control system includes：
Acquisition module, it is used to obtain environment temperature；
First control module, it is used to, when the environment temperature is less than design temperature, make the compressor of the air-conditioning pre-
Heat；
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 to, when the outer blower fan raising speed is to the first object rotating speed, make the air-conditioning
Compressor start, and make the compressor according to multiple setting speeds, stage by stage continuous raising frequency, and reaching in compressor frequency
During first object frequency, 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, whether the outer blower fan rises
Whether speed to the first object rotating speed and the compressor frequency reaches the first object frequency.
Under above-mentioned low-temperature heating operating mode in the optimal technical scheme of the control system of air-conditioning, the 3rd control module is pressed
Make the compressor according to multiple setting speeds continuous raising frequency stage by stage according to following manner：
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 heating operating mode 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 ambient humidity, and the target component is accordingly target temperature
Degree or target humidity.
It will be appreciated to those of skill in the art that in the preferred technical solution of the present invention, it is empty under low-temperature heating operating mode
The control method of tune includes：Obtain environment temperature；When environment temperature is less than design temperature, make the compressor preheating of air-conditioning；
After the compressor preheating terminates, start the outer blower fan of air-conditioning, and according to setting acceleration raising speed to first object rotating speed；
In outer blower fan raising speed to first object rotating speed, make the compressor start of air-conditioning；Make compressor according to multiple setting speeds, sublevel
Duan Lianxu raising frequencies；Judge whether compressor frequency reaches first object frequency；When compressor frequency reaches first object frequency,
Compressor is set to stop raising frequency.By cancelling the continuous running phases during compressor raising frequency in oil return frequency, then make pressure
Contracting machine is upon actuation with different raising frequency speed continuous raising frequency stage by stage, when the raising frequency of compressor can be greatly shortened in the present invention
Between, and then the purpose quickly heated, the comfortableness of air-conditioning is lifted, improves Consumer's Experience.And by compressor start it
Preceding acquisition environment temperature, and first allow when environment temperature is less than design temperature compressor preheating and in compressor preheating knot
First allow outer blower fan to start before beam, raising frequency operation and reach the method to set up of first object rotating speed, can be created in advance for compressor
Good condition of work is made, as compressor preheating can make the reduction of compressor lubricant oil viscosity, improve the lubrication of compressor
Effect and running stability；It is compressor radiating that outer blower fan drives air flow using high rotating speed, when can make compressor start just
Possess good radiating condition, then avoid outer blower fan together start with compressor caused by compressor radiating effect it is bad
Situation occurs, and improves the heating effect after compressor start.
Specifically, when environment temperature is less than design temperature, first make compressor preheating, make exogenous wind immediately after preheating terminates
Machine starts, and compressor start is made when outer blower fan reaches maximum (top) speed, the first raising frequency speed is first according to after compressor start and is entered
Row raising frequency, when compressor frequency reaches transition frequency, compressor is set to carry out raising frequency according to the second raising frequency speed, in compressor frequency
When rate reaches first object frequency, compressor is set to stop raising frequency.Wherein, transition frequency is less than first object frequency, the first raising frequency
Speed is more than the second raising frequency speed.Preferably, first object frequency is the maximum operation frequency of compressor.Present inventor
By testing discovery repeatedly, after compressor preheating is first allowed when environment temperature is less than design temperature for a period of time, and then allow outer
Blower fan starts, and compressor is divided two or more with raising frequency speed first quick and back slow when outer blower fan reaches maximum (top) speed
Stage carries out raising frequency, and the present invention can not only ensure the normal oil return of compressor by the phasic Chang of raising frequency speed, while can also
Compressor raising frequency is greatly shortened to the time of maximum operation frequency, 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 heating operating mode under air-conditioning control method and system.In accompanying drawing：
Fig. 1 is the schematic flow sheet of the control method of air-conditioning under low-temperature heating operating mode of the invention；
Fig. 2 is the compressor of the control method of air-conditioning and the compressor of prior art under low-temperature heating operating mode of the invention
Raising frequency process contrast schematic diagram；
Fig. 3 be the present invention low-temperature heating operating mode under air-conditioning control method environment temperature be less than 5 DEG C when, compressor,
The control logic schematic diagram of 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 schematic flow sheet of the control method of air-conditioning under low-temperature heating operating mode of the invention.
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 when environment temperature is relatively low the problem of compressor lubrication effect difference, the invention provides one kind
The control method of air-conditioning under low-temperature heating operating mode, the control method mainly include the following steps that：
S100, environment temperature is obtained, the starting switch of air-conditioning is pressed such as user to be made air-conditioning start shooting and select heating mode
Afterwards, air-conditioning obtains environment temperature by thermometer or temperature sensor etc., and wherein environment temperature can refer to the temperature of outdoor environment；
S200, when environment temperature is less than design temperature, make the compressor preheating of air-conditioning, such as environment temperature be less than it is a certain
During setting value, by way of the heat tape set in compressor is powered or is powered directly to compressor, make compressor pre-
Hot 1min, and then reduce the lubricating oil viscosity denseness in compressor, it is preferable that design temperature is 5 DEG C,；
S300, after compressor preheating terminates, start the outer blower fan of air-conditioning, and according to setting acceleration raising speed to
One rotating speed of target, such as after compressor preheating 1min, outer blower fan is set to start according to the acceleration for improving 1000r/min each seconds,
And the first object rotating speed for reaching 3000r/min at 3 seconds, it is preferable that first object rotating speed is the maximum functional of outer blower fan
Rotating speed；
S400, while outer blower fan starts raising speed, before or after, the expansion valve opening of air-conditioning is quickly adjusted to
One target aperture, it is preferable that while outer blower fan starts, expansion valve is first decreased to benchmark according to pass valve speed from 480 steps and opened
Degree, then increases to first object aperture from reference opening amount according to Valve opening velocity, it is preferable that expansion valve be electric expansion valve or other
The expansion valve of aperture can be controlled；
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).
S500, when outer blower fan and/or expansion valve reach and imposed a condition, make the compressor start of air-conditioning, such as in outer blower fan
Rotating speed raising speed to first object rotating speed and/or during expansion valve opening is adjusted to first object aperture, make sky
The compressor start of tune, it is preferable that reach first object rotating speed in outer blower fan, while when expansion valve reaches reference opening amount,
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 is by when environment temperature is less than 5 DEG C, making
When the control method that compressor first preheats, can reduce the lubricating oil viscosity denseness in compressor, and then improve compressor operating
Lubricant effect.Outer blower fan is set to reach most prior to compressor start, and in outer blower fan simultaneously with expansion valve after preheating terminates
Big working speed and restart compressor when expansion valve reaches reference opening amount, good heat sink strip can be created for compressor in advance
Part, avoids that compressor radiating effect is bad and expansion valve opening and compressor caused by outer blower fan together starts with compressor
Unmatched situation occurs.And make compressor upon actuation with the set-up mode of different raising frequency speed continuous raising frequency stage by stage,
The raising frequency time of compressor can be then greatly shortened, improves the heating effect after compressor start, and then quickly heat
Purpose.In other words, present invention eliminates during compressor raising frequency in oil return frequency continuous service process, then pass through
Outer blower fan is opened for compressor preheating, in advance in advance to be radiated and expansion valve opening and compressor mismatch, and is being pressed
The mode of compressor raising frequency speed is controlled during contracting machine raising frequency, ensure that the normal oil return of compressor, while can also complete to press
The quick raising frequency of contracting machine, solve quick caused by the raising frequency time is grown present in existing start raising frequency control method
The problem of heating effect is poor, lubricant effect is bad, the comfortableness of air-conditioning is improved, substantially improves 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, the setting of environment temperature and preheating time is simultaneously
Non- to be only limited to 5 DEG C and a kind of modes of 1min, those skilled in the art can be adjusted based on different regions Different climate condition,
Design temperature is such as arranged to 3 DEG C or 7 DEG C, 30s or 2min etc. will be arranged to preheating times.
Referring to Fig. 2, principle of the invention is expanded on further.Wherein, Fig. 2 is empty under low-temperature heating operating mode of the invention
The raising frequency process contrast schematic diagram of the compressor of the control method of tune and the compressor of prior art.In Fig. 2, solid line represents this hair
The raising frequency process of compressor in bright control method, 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 arrangement above mode, 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 setting side of raising frequency in two stages with raising frequency speed first quick and back slow
Formula 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.
Mode is preferably set up 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 heating operating mode, the control system mainly includes：
Acquisition module, it is used to obtain environment temperature, and after air-conditioning start selection heating mode, acquisition module collection is outdoor
The temperature of environment；
First control module, it is used for the compressor preheating for when environment temperature is less than design temperature, making air-conditioning, such as in ring
When border temperature is less than 5 DEG C, powered off again after the heat tape energization 1min that the first control module makes to set on compressor；
Second control module, it is used for after compressor preheating terminates, and starts the outer blower fan of air-conditioning, and according to setting
Acceleration raising speed is to first object rotating speed, and such as after heat tape power-off, the second control module makes outer blower fan adding according to setting
Speed raising speed is to maximum functional rotating speed；
3rd control module, it is used to reach benchmark in outer blower fan raising speed to first object rotating speed and/or expansion valve
During aperture, make compressor start, and make compressor according to multiple setting speeds, stage by stage continuous raising frequency, and in compressor frequency
When rate reaches first object frequency, compressor is set to stop raising frequency；
4th control module, it is used for while the outer blower fan starts raising speed, before or after (as simultaneously), make sky
The expansion valve opening of tune is decreased to reference opening amount according to the pass valve speed of setting, and reaches reference opening amount in expansion valve opening
When, expansion valve is increased to first object aperture according to the Valve opening velocity of setting；
Judge module, it is used to judging environment temperature whether being less than design temperature, outer blower fan whether raising speed to be to first object
Whether rotating speed, expansion valve opening reach reference opening amount and whether compressor reaches first object 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, obtains outdoor/indoor temperature in real time and outdoor/interior is wet
Degree 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 and is such as existed
When indoor temperature reaches the target temperature of user's setting, the second control module makes the rotating speed of outer blower fan be down to nominal operation rotating speed,
3rd control module makes compressor be downconverted to rated operation frequency, and the 4th control module makes expansion valve opening be decreased to and compressor
The aperture that 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.
Letter is done to the control method of air-conditioning under the low-temperature heating operating mode of the present invention and the operation principle of system with reference to Fig. 3
Illustrate.Fig. 3 be the present invention low-temperature heating operating mode under air-conditioning control method when environment temperature is less than 5 DEG C, it is compressor, outer
The control logic schematic diagram of blower fan and expansion valve.
As shown in figure 3, air-conditioning, in heating mode, the course of work of outer blower fan and compressor can be：
The outdoor temperature of air-conditioning start heating → acquisition → when outdoor temperature is less than 5 DEG C, make the heat tape of compressor
According to voltage U1' be powered → through T0Heat tape powers off after time interval, and outer blower fan is according to acceleration a1' rotating speed is improved, together
When expansion valve according to close valve speed V21' from aperture B1' start to reduce aperture → through T1Outer blower fan reaches maximum work after time interval
Make rotating speed n1', expansion valve reaches reference opening amount B' simultaneously2When, compressor start, and according to raising frequency speed V11' raising frequency, outer blower fan
The operation of maximum functional rotating speed is kept, expansion valve is according to Valve opening velocity V22' increase aperture → through T2Compressor frequency after time interval
Reach transition frequency f1' when, with raising frequency speed V12' continuing raising frequency, expansion valve continues according to Valve opening velocity V22' increase aperture → warp
T3Compressor frequency reaches maximum operation frequency f after time interval2' and stop raising frequency, expansion valve opening reaches and f2' matching
B3' and stably in this aperture → through T4Indoor temperature reaches the design temperature of user after time interval, and compressor is with frequency reducing speed
V13' frequency reducing, while outer blower fan is with acceleration a2' carrying out reduction rotating speed, expansion valve is to close valve speed V23' reduction aperture → through T5When
Between be spaced after compressor frequency be down to rated operation frequency f3' and maintain in this frequency, while outer rotation speed of fan is down to specified work
Make rotating speed n1' and maintain in this frequency, expansion valve opening is decreased to and f3' matching B'4And maintain in this frequency.
Above-mentioned preferred embodiment, the control method of air-conditioning mainly include：Obtain outdoor temperature；Temperature in outdoor
During less than 5 DEG C, make compressor preheating；After compressor preheating terminates, make outer blower fan start and according to setting acceleration raising speed extremely
Maximum functional rotating speed；Expansion valve is closed valve speed according to setting simultaneously and reduce aperture to reference opening amount；Reach maximum in outer blower fan
Working speed and when expansion valve opening reaches reference opening amount simultaneously, makes compressor start and according to the first raising frequency speed and second liter
The continuous raising frequency of frequency speed, while expansion valve is increased aperture according to Valve opening velocity；Judge whether the frequency of compressor reaches maximum
Working frequency；Stop raising frequency after the frequency of compressor reaches maximum operation frequency, while expansion valve reaches and maximum functional frequency
The aperture that rate matches.Wherein, the first raising frequency speed is more than the second raising frequency speed.The control system of air-conditioning includes the first control mould
Block, the second control module, the 3rd control module, the 4th control module, judge module and acquisition module.By in outdoor temperature
First make compressor preheating during less than 5 DEG C, expansion valve is adjusted while outer blower fan is opened after compressor preheating terminates, in outer blower fan
Reach maximum (top) speed and expansion valve opening is decreased to make compressor start during reference opening amount, and make compressor with first quick and back slow
Raising frequency speed carry out raising frequency in two stages, while make expansion valve increase aperture to the set-up mode of first object aperture, make
Of the invention it can must be created in advance by outer blower fan and expansion valve good by the lubricant effect for making compressor preheating improve compressor
Good condition of work, while ensureing compressor normal oil return by the change of compressor raising frequency speed, additionally it is possible to quick raising frequency
Run to maximum operation frequency, and then with maximum operation frequency, meet the needs of user quickly heats, greatly promote user's body
Test.
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 heating operating mode, it is characterised in that the control method comprises the following steps：
Obtain environment temperature；
When the environment temperature is less than design temperature, make the compressor preheating of the air-conditioning；
After the compressor preheating terminates, start the outer blower fan of the air-conditioning, and according to setting acceleration raising speed to
One rotating speed of target；
During the outer blower fan raising speed to the first object rotating speed, 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 heating operating mode according to claim 1, it is characterised in that the control method
Also include：
After continuous raising frequency stage by stage, judge whether 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 heating operating mode according to claim 2, it is characterised in that " in the exogenous wind
During machine raising speed to the first object rotating speed, make the compressor start of the air-conditioning " the step of further comprise：
When the outer blower fan reaches the first object rotating speed, make the compressor start of the air-conditioning.
4. the control method of air-conditioning under low-temperature heating operating mode according to claim 2, it is characterised in that " make the compression
Machine 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 heating operating mode according to claim 4, it is characterised in that first raising frequency
Speed is more than the second raising frequency speed；And/or the maximum operation frequency that the first object frequency is the compressor；
And/or the maximum functional rotating speed that the first object rotating speed is the outer blower fan；And/or the design temperature is 5
℃；And/or the step of " compressor preheating for making the air-conditioning ", is performed by Electric heating.
6. the control method of air-conditioning under low-temperature heating operating mode according to any one of claim 1 to 5, it is characterised in that
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 heating operating mode according to claim 6, it is characterised in that the ambient parameter
For the environment temperature or ambient humidity, the target component is accordingly target temperature or target humidity.
8. the control system of air-conditioning under a kind of low-temperature heating operating mode, it is characterised in that the control system includes：
Acquisition module, it is used to obtain environment temperature；
First control module, it is used for the compressor preheating for when the environment temperature is less than design temperature, making 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
Fixed acceleration raising speed is to first object rotating speed；
3rd control module, it is used to, when the outer blower fan raising speed is to the first object rotating speed, make the compression of the air-conditioning
Machine starts, and makes the compressor according to multiple setting speeds, stage by stage continuous raising frequency, and reach first in compressor frequency
During target frequency, the compressor is set to stop raising frequency；
Judge module, its be used to judging the environment temperature whether be less than the design temperature, the outer blower fan whether raising speed extremely
Whether the first object rotating speed and the compressor frequency reach the first object frequency.
9. the control system of air-conditioning under low-temperature heating operating mode according to claim 8, it is characterised in that the 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 heating operating mode 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 ambient humidity, the target component accordingly for target temperature or
Target humidity.
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Effective date of registration: 20201102 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |
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