CN109520098A - A kind of control method of compressor frequency, control device and air conditioner - Google Patents
A kind of control method of compressor frequency, control device and air conditioner Download PDFInfo
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- CN109520098A CN109520098A CN201811427745.0A CN201811427745A CN109520098A CN 109520098 A CN109520098 A CN 109520098A CN 201811427745 A CN201811427745 A CN 201811427745A CN 109520098 A CN109520098 A CN 109520098A
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- temperature
- average value
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- critical point
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The present invention provides a kind of control method of compressor frequency, control device and air conditioners, are related to air-conditioning technical field.The control method includes: to obtain first ambient temperature average value of the outdoor unit of the air conditioner within the first period and the second ambient temperature average value within the second period.Judgment criteria critical point temperature is determined according to the first ambient temperature average value.Working frequency according to the first ambient temperature average value, the second ambient temperature average value and judgment criteria critical point temperature control compressor.The control method can make ambient temperature when closing on the variation of judgment criteria critical point temperature, and it is more accurate to control, and the frequent variation of the working frequency of outdoor compressor be avoided, to improve the usage experience of user.
Description
Technical field
The present invention relates to air-conditioning technical fields, control method, control device in particular to a kind of compressor frequency
And air conditioner.
Background technique
At present when air conditioner refrigeration external environment high temperature, since the air-conditioning products of most of producers without high pressure sensor or are examined
Tube temperature degree precise control is poor in the outer machine condenser of worry, and compressor frequency can be fixed by the setting value in ambient temperature section
Output.When ambient temperature is in the critical point in ambient temperature section, it may cause compressor frequency and frequently go up and down
Indoor blowout temperature height is caused to change big, user experience reduces.
Summary of the invention
Compressor frequency frequent fluctuation leads to indoor blowout temperature when problems solved by the invention is ambient temperature variation
The problem of frequent variation of degree, to improve the user experience.
To solve the above problems, the present invention provides a kind of control method of compressor frequency, comprising:
Obtain first ambient temperature average value of the outdoor unit of the air conditioner within the first period and within the second period
The second ambient temperature average value, wherein second period is a period of time before terminating first period, and institute
The duration for stating for the second period is less than first period；
Judgment criteria critical point temperature is determined according to the first ambient temperature average value, wherein the judgement mark
Quasi- critical point temperature be multiple critical point temperatures in the first ambient temperature average value and second external environment
The critical point temperature that temperature averages close on, the multiple critical point temperature indicate to control the outdoor unit under refrigeration mode
Compressor working frequency based on preset environment temperature section end point temperatures；
It is marked according to the first ambient temperature average value, the second ambient temperature average value and the judgement
Quasi- critical point temperature controls the working frequency of the compressor.
By the working frequency of the compressor according to the first ambient temperature average value, second external rings
Border temperature averages and judgment criteria critical point temperature control are to control, that is to say, that by examining to ambient temperature
The range of survey and the parameter adjustment of detection time number, can make ambient temperature close on the change of judgment criteria critical point temperature
When change, it is more accurate to control, and avoids the frequent variation of the working frequency of outdoor compressor, to improve the use body of user
It tests.
Further, the step that judgment criteria critical point temperature is determined according to the first ambient temperature average value
Suddenly include:
If tn-1< tao’≤tn, then flat according to first ambient temperature at the end of the first period timing
Mean value and the interval midpoint temperature in the default environment temperature section determine the judgment criteria critical point temperature；
Wherein, tn-1For the default environment temperature section (tn-1, tn] in interval limit value corresponding to critical point temperature
Degree, tnFor the default environment temperature section (tn-1, tn] in section upper limit value corresponding to critical point temperature, tao' it is described
First ambient temperature average value, n are the positive integer more than or equal to 2.
Interval midpoint temperature according to the first ambient temperature average value and the default environment temperature section is true
The fixed judgment criteria critical point temperature, keeps the determination of judgment criteria critical point temperature more accurate, is more conducive to according to institute
The first ambient temperature average value, the second ambient temperature average value and the judgment criteria critical point temperature is stated to come
Control the working frequency of the compressor.
Further, if the tn-1< tao’≤tn, then at the end of the first period timing, outside described first
The interval midpoint temperature in portion's environment temperature average value and the default environment temperature section determines the judgment criteria critical point temperature
The step of spending include:
If tn-1< tao’≤tnAnd tao’≥(tn-1+tn)/2, it is determined that critical point temperature tnIt is critical for the judgment criteria
Point temperature；
Wherein, (tn-1+tn)/2 indicate the interval midpoint temperature in the default environment temperature section.
It is greater than or equal to the interval midpoint temperature in the default environment temperature section in the first ambient temperature average value
When, the first ambient temperature average value presets environment temperature section (t closer in thisn-1, tn] section upper limit value, therefore,
Determine critical point temperature tnIt is more accurate for the judgment criteria critical point temperature, be more advantageous to the working frequency of compressor into
Row is precisely controlled.
Further, described average according to the first ambient temperature average value, second ambient temperature
The step of value and the judgment criteria critical point temperature control the working frequency of the compressor include:
If (tn-1+tn)/2≤tao' < tn- M and tao‘’≤tn- N then controls the working frequency of the compressor by default
Working frequency Φn-1Output；
Wherein, tao' ' indicates that the second ambient temperature average value, M indicate that preset first judges temperature, and N is indicated
Preset second judges temperature, and M and N are respectively less than the default environment temperature section (tn-1, tn] silicon carbide spacing value, and N
< M, Φn-1For the default environment temperature section (tn-1, tn] corresponding to default working frequency.
, it can be said that bright ambient temperature is from critical point temperature tnFarther out, also it is unlikely to change to next default ring
Border temperature range (tn, tn+1], at this point, still by default environment temperature section (tn-1, tn] corresponding to default working frequency Φn-1
It is exported to control compressor, to be better protected from the frequent variation of compressor operating frequency, improves user experience.
Further, described average according to the first ambient temperature average value, second ambient temperature
The step of value and the judgment criteria critical point temperature control the working frequency of the compressor include:
If tn-M≤tao’≤tnOr tao' < tn- M and tao' ' > tn- N, the then working frequency for controlling the compressor are pressed
Default working frequency ΦnOutput；
Wherein, tao' ' indicates that the second ambient temperature average value, M indicate that preset first judges temperature, and N is indicated
Preset second judges temperature, and M and N are respectively less than the default environment temperature section (tn-1, tn] silicon carbide spacing value, and N
< M, ΦnFor the default environment temperature section (tn, tn+1] corresponding to default working frequency.
, it can be said that bright ambient temperature is from critical point temperature tnIt is relatively close, have and has changed to next default environment
Temperature range (tn, tn+1] trend, at this point, by default environment temperature section (tn, tn+1] corresponding to default working frequency Φn
It is exported to control compressor, to be better protected from the frequent variation of compressor operating frequency, improves user experience.
Further, if the tn-1< tao’≤tn, then at the end of the first period timing, outside described first
The interval midpoint temperature in portion's environment temperature average value and the default environment temperature section determines the judgment criteria critical point temperature
The step of spending include:
If tn-1< tao’≤tnAnd tao' < (tn-1+tn)/2, it is determined that critical point temperature tn-1It is critical for the judgment criteria
Point temperature；
Wherein, (tn-1+tn)/2 indicate the interval midpoint temperature in the default environment temperature section.
Further, described average according to the first ambient temperature average value, second ambient temperature
The step of value and the judgment criteria critical point temperature control the working frequency of the compressor include:
If tn-1≤tao’≤tn-1+ M or tao' > tn-1+ M and tao' ' < tn-1+ N then controls the work frequency of the compressor
Rate presses default working frequency Φn-2Output；
Wherein, tao' ' indicates that the second ambient temperature average value, M indicate that preset first judges temperature, and N is indicated
Preset second judges temperature, and M and N are respectively less than the default environment temperature section (tn-1, tn] silicon carbide spacing value, and N
< M, Φn-2For the default environment temperature section (tn-2, tn-1] corresponding to default working frequency, n be more than or equal to 3
Positive integer.
If in this way, when meeting tn-1≤tao’≤tn-1+ M or tao' > tn-1+ M and tao' ' < tn-1When+N, it may be said that bright outer
Portion's environment temperature is from critical point temperature tn-1It is relatively close, have and has changed to a default environment temperature section (tn-2, tn-1] become
Gesture, at this point, by default environment temperature section (tn-2, tn-1] corresponding to default working frequency Φn-2It is exported to control compressor,
To be better protected from the frequent variation of compressor operating frequency, user experience is improved.
Further, described average according to the first ambient temperature average value, second ambient temperature
The step of value and judgment criteria critical point temperature control the working frequency of the compressor include:
If (tn-1+tnThe > t of)/2ao' > tn-1+ M and tao‘’≥tn-1+ N then controls the working frequency of the compressor by pre-
If working frequency Φn-1Output；
Wherein, tao' ' indicates that the second ambient temperature average value, M indicate that preset first judges temperature, and N is indicated
Preset second judges temperature, and M and N are respectively less than the default environment temperature section (tn-1, tn] silicon carbide spacing value, and N
< M, Φn-1For the default environment temperature section (tn-1, tn] corresponding to default working frequency, n be just more than or equal to 2
Integer.
In this way, when meeting (tn-1+tnThe > t of)/2ao' > tn-1+ M and tao‘’≥tn-1When+N, it may be said that bright ambient temperature
From critical point temperature tn-1Farther out, at this point, by default environment temperature section (tn-1, tn] corresponding to default working frequency Φn-1Come
Compressor output is controlled, to be better protected from the frequent variation of compressor operating frequency, improves user experience.
The embodiment of the invention also provides a kind of control devices of compressor frequency, comprising:
Obtain module, for obtain first ambient temperature average value of the outdoor unit of the air conditioner within the first period and
The second ambient temperature average value within the second period, wherein second period is before terminating first period
For a period of time, and the duration of second period is less than first period；
Determining module, for determining judgment criteria critical point temperature according to the first ambient temperature average value,
In, the judgment criteria critical point temperature be in multiple critical point temperatures with the first ambient temperature average value and described
The critical point temperature that second ambient temperature average value closes on, the multiple critical point temperature indicate to control under refrigeration mode
Make the end point temperatures that environment temperature section is preset based on the working frequency of the compressor of the outdoor unit；
Control module, for average according to the first ambient temperature average value, second ambient temperature
Value and the judgment criteria critical point temperature control the working frequency of the compressor.
By the parameter adjustment of the range and detection time number that detect to ambient temperature, external environment temperature can be made
For degree when closing on the variation of judgment criteria critical point temperature, it is more accurate to control, and avoids the frequency of the working frequency of outdoor compressor
Numerous variation, to improve the usage experience of user.
The embodiment of the invention also provides a kind of air conditioners, comprising: memory and controller；The memory is stored with
Computer program when the computer program is read and run by the controller, realizes any compressor frequency
Control method.
By the parameter adjustment of the range and detection time number that detect to ambient temperature, external environment temperature can be made
For degree when closing on the variation of judgment criteria critical point temperature, it is more accurate to control, and avoids the frequency of the working frequency of outdoor compressor
Numerous variation, to improve the usage experience of user.
Detailed description of the invention
Fig. 1 is answered by the control method of compressor frequency provided in an embodiment of the present invention and the control device of compressor frequency
The structural schematic block diagram of air conditioner；
Fig. 2 is the schematic process flow diagram of the control method for the compressor frequency that one embodiment of the invention provides；
Fig. 3 is the schematic process flow diagram of the control method for the compressor frequency that further embodiment of this invention provides；
Fig. 4 is the structural schematic block diagram of the control device of compressor frequency provided in an embodiment of the present invention.
Description of symbols:
10- air conditioner；11- memory；12- controller；The control device of 100- compressor frequency；110- computing module；
120- obtains module；130- determining module；140- control module.
Specific embodiment
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Referring to Fig. 1, the embodiment provides a kind of control method of compressor frequency and compressor frequencies
Control device 100 is applied to air conditioner 10, the ambient temperature control outdoor unit for the outdoor unit according to air conditioner 10
The working frequency of compressor.The air conditioner 10 includes the control device 100 of memory 11, controller 12 and compressor frequency.
Memory 11 and controller 12 are directly or indirectly electrically connected between each other, to realize the transmission or friendship of data
Mutually.It is electrically connected for example, these elements can be realized between each other by one or more communication bus or signal wire.The compression
The control device 100 of unit frequency includes that at least one can be stored in the memory in the form of software or firmware (firmware)
In 11 or the software function module that is solidificated in the operating system (operating system, OS) of server.The controller
12 are used to execute the executable module stored in the memory 11, such as the control device 100 of the compressor frequency is wrapped
Software function module and computer program for including etc..
Wherein, the memory 11 may be, but not limited to, random access memory (Random Access Memory,
RAM), read-only memory (Read Only Memory, ROM), programmable read only memory (Programmable Read-Only
Memory, PROM), erasable read-only memory (Erasable Programmable Read-Only Memory, EPROM),
Electricallyerasable ROM (EEROM) (Electric Erasable Programmable Read-Only Memory, EEPROM) etc..
Wherein, memory 11 is for storing program, and the controller 12 executes described program after receiving and executing instruction.
The control method of the compressor frequency is applied to the outdoor unit under the refrigeration mode of air conditioner 10 and presses external environment temperature
It spends in control model of the section to control the output of compressor operating frequency.Wherein, outdoor unit is come by ambient temperature section
The control model of output for controlling compressor operating frequency may include:
As practical ambient temperature taoIt increases, and practical ambient temperature tao>=critical point temperature tnWhen, then it compresses
Machine output reduces；
As practical ambient temperature taoIt reduces, and practical ambient temperature tao< critical point temperature tnWhen, then it compresses
Machine output increases.
In cooling mode, n critically weighted t is set1、t2…tn, and t1< t2< ... < tn, n is more than or equal to 2
Positive integer.Optionally, by ambient temperature, the value range of critical point temperature can be 35-65 DEG C, adjacent critical-temperature
Interval can be 3-10 DEG C, further, be chosen as 3 DEG C, 5 DEG C, 7 DEG C, 10 DEG C etc..It should be noted that default environment temperature
Section is (tn-1, tn], then the working frequency of compressor output corresponds to Φn-1.The compressor in each default environment temperature section
The working frequency relativeness of output are as follows: ... Φn-2> Φn-1> Φn> Φn+1…。
Referring to Fig. 2, the control method of the compressor frequency the following steps are included:
Step S100 obtains multiple first external environment temperature of the outdoor unit of the air conditioner 10 detected within the first period
Degree, and the average value of multiple first ambient temperatures is calculated, obtain the first ambient temperature average value, wherein Duo Ge
One ambient temperature is to detect the ambient temperature of outdoor unit every one section of interval time T1 within the first period and obtain.
In the present embodiment, 1 ambient temperature is detected every 30s by ambient temperature sensor, that is, when being spaced
Between T1 be 30s, so that multiple first ambient temperatures are obtained, the first ambient temperature average value is calculated.First
Ambient temperature average value is with tao' indicate.It should be noted that the ambient temperature of initial time is tao, and current pressure
Contracting machine presses ΦnOutput.In addition, the first period TX can be 60min, in the present embodiment, can calculate every the first period TX should
The average value of multiple first ambient temperatures in period.
Step S200 obtains multiple first external environment temperature of the outdoor unit of the air conditioner 10 detected within the second period
Degree, and the average value of multiple second ambient temperatures is calculated, obtain the second ambient temperature average value.Wherein, Duo Ge
Two ambient temperatures are to detect the ambient temperature of outdoor unit every one section of interval time T2 within the second period and obtain,
And second the period be a period of time before terminating the first period, and the duration of the second period is less than the first period.
In the present embodiment, 1 ambient temperature is detected every 30s by ambient temperature sensor, that is, when being spaced
Between T2 be 30s, to obtain multiple second ambient temperatures, to be calculated the second ambient temperature average value, second
Ambient temperature average value is with tao' ' indicates.In addition, T2 can be identical as T1, it can not also be identical.The value of T1 and T2 can
With corresponding setting according to actual needs.Second period TY be chosen as the first period terminate before k*TX time, for example, TX=
60min, k can be chosen as 6min for 10%, TY.Certainly, the value of TX and TY and proportionality coefficient k can be according to actual needs
Corresponding setting.
Step S300, obtain air conditioner 10 first ambient temperature average value of the outdoor unit within the first period and
The second ambient temperature average value in second period.Wherein, the second period was a period of time before terminating the first period, and
The duration of second period is less than the first period.
Step S400 determines judgment criteria critical point temperature according to the first ambient temperature average value.Wherein, judge to mark
Quasi- critical point temperature is average with the first ambient temperature average value and the second ambient temperature in multiple critical point temperatures
The critical point temperature that value is closed on, multiple critical point temperatures indicate to control based on compressor operating frequency under refrigeration mode
The end point temperatures in default environment temperature section.
In the present embodiment, in step S400, if tn-1< tao’≤tn, then at the end of the first period timing, according to first
The interval midpoint temperature in ambient temperature average value and default environment temperature section determines judgment criteria critical point temperature.
Wherein, tn-1To preset environment temperature section (tn-1, tn] in interval limit value corresponding to critical point temperature, tn
To preset environment temperature section (tn-1, tn] in section upper limit value corresponding to critical point temperature.
Judgement mark is determined according to the interval midpoint temperature in the first ambient temperature average value and default environment temperature section
Quasi- critical point temperature keeps the determination of judgment criteria critical point temperature more accurate, is more conducive to according to the first external environment temperature
Average value, the second ambient temperature average value and judgment criteria critical point temperature are spent to control the working frequency of compressor.
Referring to Fig. 3, in some embodiments of the invention, further, if tn-1< tao’≤tn, then in the first period
At the end of timing, judgement is determined according to the interval midpoint temperature in the first ambient temperature average value and default environment temperature section
The step of standard critical point temperature may include:
Step S410, if tn-1< tao’≤tnAnd tao’≥(tn-1+tn)/2, it is determined that critical point temperature tnFor judgment criteria
Critical point temperature.
Wherein, (tn-1+tn)/2 indicate the interval midpoint temperature in default environment temperature section.
It should be appreciated that being greater than or equal to the interval midpoint in default environment temperature section in the first ambient temperature average value
When temperature, the first ambient temperature average value presets environment temperature section (t closer in thisn-1, tn] section upper limit value,
Accordingly, it is determined that critical point temperature tnIt is more accurate for judgment criteria critical point temperature, it is more advantageous to the working frequency to compressor
It is precisely controlled.
Step S420, if tn-1< tao’≤tnAnd tao' < (tn-1+tn)/2, it is determined that critical point temperature tn-1For judgement mark
Quasi- critical point temperature.
It should be appreciated that being less than the interval midpoint temperature in default environment temperature section in the first ambient temperature average value
When, the first ambient temperature average value presets environment temperature section (t closer in thisn-1, tn] interval limit value, therefore,
Determine critical point temperature tn-1It is more accurate for judgment criteria critical point temperature, it is more advantageous to the working frequency progress to compressor
It is precisely controlled.
It is flat according to the first ambient temperature average value, the second ambient temperature please continue to refer to Fig. 2, step S500
The working frequency of mean value and judgment criteria critical point temperature control compressor.
By the working frequency of compressor according to the first ambient temperature average value, the second ambient temperature average value
And the control of judgment criteria critical point temperature is to control, that is to say, that when by the range and detection that detect to ambient temperature
Between number parameter adjustment, can make ambient temperature close on judgment criteria critical point temperature variation when, control it is more quasi-
Really, the frequent variation of the working frequency of compressor is avoided, to improve the usage experience of user.
Please continue to refer to Fig. 3, in some embodiments of the invention, after the step s 410, step S500 the following steps are included:
Step S510, if (tn-1+tn)/2≤tao' < tn- M and tao‘’≤tn- N, the then working frequency for controlling compressor are pressed
Default working frequency Φn-1Output.
Wherein, M indicates that preset first judges temperature, and N indicates that preset second judges temperature, and M and N are respectively less than default ring
Border temperature range (tn-1, tn] silicon carbide spacing value, and N < M, Φn-1To preset environment temperature section (tn-1, tn] corresponding
Default working frequency.
It should be noted that M is chosen as 1.5-3 DEG C, N is chosen as in 0-1 DEG C, such as the present embodiment, and M is 2 DEG C, N 1
℃。
In this way, when meeting (tn-1+tn)/2≤tao' < tn- M and tao‘’≤tnWhen-N, it may be said that bright ambient temperature from
Critical point temperature tnFarther out, also it is unlikely to change to next default environment temperature section (tn, tn+1], at this point, still by default ring
Border temperature range (tn-1, tn] corresponding to default working frequency Φn-1It is exported to control compressor, to be better protected from compression
The frequent variation of machine working frequency improves user experience.
Step S520, if tn-M≤tao’≤tnOr tao' < tn- M and tao' ' > tn- N then controls the work frequency of compressor
Rate presses default working frequency ΦnOutput.
Wherein, ΦnTo preset environment temperature section (tn, tn+1] corresponding to default working frequency.
In this way, when meeting tn-M≤tao’≤tnOr tao' < tn- M and tao' ' > tnWhen-N, it may be said that bright external environment temperature
It spends from critical point temperature tnIt is relatively close, have and has changed to next default environment temperature section (tn, tn+1] trend, at this point, by pre-
If environment temperature section (tn, tn+1] corresponding to default working frequency ΦnIt is exported to control compressor, to be better protected from pressure
The frequent variation of contracting machine working frequency improves user experience.
In some embodiments of the present invention, after step S420, step S500 the following steps are included:
Step S530, if tn-1≤tao’≤tn-1+ M or tao' > tn-1+ M and tao' ' < tn-1+ N then controls compressor
Working frequency presses default working frequency Φn-2Output.Wherein, Φn-2For the default environment temperature section (tn-2, tn-1] corresponding
Default working frequency, n is positive integer more than or equal to 3.
If in this way, when meeting tn-1≤tao’≤tn-1+ M or tao' > tn-1+ M and tao' ' < tn-1When+N, it may be said that bright outer
Portion's environment temperature is from critical point temperature tn-1It is relatively close, a default environment temperature section (t is changed at this point, having hadn-2, tn-1]
Trend, by default environment temperature section (tn-2, tn-1] corresponding to default working frequency Φn-2It is exported to control compressor, from
And it is better protected from the frequent variation of compressor operating frequency, improve user experience.
Particularly, when meeting t1≤tao’≤t1+ M or tao' > t1+ M and tao' ' < t1When+N, has to change to and be lower than
t1Trend, at this point, according to t1The fixation operating frequency value of corresponding preset compressor exports.
Step S540, if (tn-1+tnThe > t of)/2ao' > tn-1+ M and tao‘’≥tn-1+ N then controls the working frequency of compressor
By default working frequency Φn-1Output.Wherein, Φn-1For the default environment temperature section (tn-2, tn-1] corresponding to default work
Working frequency, n are the positive integer more than or equal to 2.
In this way, when meeting (tn-1+tnThe > t of)/2ao' > tn-1+ M and tao‘’≥tn-1When+N, it may be said that bright ambient temperature
From critical point temperature tn-1Farther out, at this point, by default environment temperature section (tn-1, tn] corresponding to default working frequency Φn-1Come
Compressor output is controlled, to be better protected from the frequent variation of compressor operating frequency, improves user experience.
It should be noted that when ambient temperature is lower than default environment temperature section (t1, t2] interval limit value institute it is right
The critical point temperature t answered1It is that control compressor is exported according to preset fixed operating frequency value.
The workflow of the control method of compressor frequency provided in an embodiment of the present invention is introduced with a specific embodiment below
Journey:
In cooling mode, 40 DEG C of critically weighted, 45 DEG C, 50 DEG C, 55 DEG C are set, 5 DEG C are divided between adjacent critical-temperature,
Then preset environment temperature section be (40 DEG C, 45 DEG C], (45 DEG C, 50 DEG C], (50 DEG C, 55 DEG C].Pass through outside within the first period
Environment temperature sensor detects an ambient temperature every 30s and obtains multiple first ambient temperatures, i.e. interval time
T1 is 30s.Within the second period by ambient temperature sensor every 30s detect an ambient temperature obtain it is multiple
Second ambient temperature, i.e. interval time T2 are 30s.The first ambient temperature average value t is calculated every 60minao', i.e.,
First period TX is 60min, in the embodiment, the first ambient temperature average value tao'=43 DEG C.In above-mentioned 60min
55-60min period in calculate the second ambient temperature average value tao' ', the second ambient temperature in the embodiment
Average value tao' '=41 DEG C.Due to 40 DEG C 43 DEG C≤45 DEG C of <, and 43 DEG C >=42.5 DEG C, that is to say, that meet condition tn-1<
tao’≤tnAnd tao’≥(tn-1+tn)/2, it is determined that critical point temperature tn=45 DEG C are judgment criteria critical point temperature.Take first
Temperature M is judged for 2 DEG C, and second judges that temperature for 1 DEG C, due to 43 DEG C≤43 DEG C≤45 DEG C, meets condition tn-M≤tao’≤tn,
The working frequency of compressor is then controlled by default working frequency ΦnOutput, i.e. control compressor is according to default environment temperature section
(45 DEG C, 50 DEG C] corresponding to working frequency output.In conclusion the controlling party of compressor frequency provided in an embodiment of the present invention
Method is adjusted by the parameter of the range and detection time number that detect to ambient temperature, and ambient temperature can be made to face
When nearly judgment criteria critical point temperature variation, it is more accurate to control, and avoids the frequent variation of the working frequency of outdoor compressor,
To improve the usage experience of user.
Referring to Fig. 4, in addition, the control device 100 for the compressor frequency that the embodiment of the present invention provides includes calculating mould
Block 110 obtains module 120, determining module 130 and control module 140.
Computing module 110, for obtain the outdoor unit of the air conditioner 10 detected within the first period multiple first outside
Portion's environment temperature, and the average value of multiple first ambient temperatures is calculated, obtain the first ambient temperature average value；With
And multiple first ambient temperatures of the outdoor unit for obtaining the air conditioner 10 detected within the second period, and calculate
The average value of multiple second ambient temperatures obtains the second ambient temperature average value.
In the embodiment of the present invention, step S100 and step S200 are executed by computing module 110.
Module 120 is obtained, it is flat for obtaining first ambient temperature of the outdoor unit of air conditioner 10 within the first period
Mean value and the second ambient temperature average value within the second period.
In the embodiment of the present invention, step S300 is executed by acquisition module 120.
Determining module 130, for determining judgment criteria critical point temperature according to the first ambient temperature average value.
In the embodiment of the present invention, step S400 is executed by determining module 130.
Further, it is determined that if module 130 is also used to tn-1< tao’≤tnAnd tao’≥(tn-1+tn)/2, it is determined that critical
Point temperature tnFor judgment criteria critical point temperature.If determining module 130 is also used to tn-1< tao’≤tnAnd tao' < (tn-1+tn)/
2, it is determined that critical point temperature tn-1For judgment criteria critical point temperature.
In the embodiment of the present invention, step S410 and step S420 are executed by determining module 130.
Control module 140 for foundation the first ambient temperature average value, the second ambient temperature average value and is sentenced
The working frequency of disconnected standard critical point temperature control compressor.
In the embodiment of the present invention, step S500 is executed by control module 140.
If control module 140 is also used to (tn-1+tn)/2≤tao' < tn- M and tao‘’≤tn- N then controls the work of compressor
Working frequency presses default working frequency Φn-1Output.
In the embodiment of the present invention, step S510 is executed by control module 140.
If control module 140 is also used to tn-M≤tao’≤tnOr tao' < tn- M and tao' ' > tn- N then controls compressor
Working frequency press default working frequency ΦnOutput.
In the embodiment of the present invention, step S520 is executed by control module 140.
If control module 140 is also used to tn-1≤tao’≤tn-1+ M or tao' > tn-1+ M and tao' ' < tn-1+ N is then controlled
The working frequency of compressor presses default working frequency Φn-2Output.
In the embodiment of the present invention, step S530 is executed by control module 140.
If control module 140 is also used to (tn-1+tnThe > t of)/2ao' > tn-1+ M and tao‘’≥tn-1+ N then controls compressor
Working frequency presses default working frequency Φn-1Output.
In the embodiment of the present invention, step S540 is executed by control module 140.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (10)
1. a kind of control method of compressor frequency characterized by comprising
Obtain the first ambient temperature average value of the outdoor unit within the first period of air conditioner (10) and within the second period
The second ambient temperature average value, wherein second period is a period of time before terminating first period, and institute
The duration for stating for the second period is less than first period；
Judgment criteria critical point temperature is determined according to the first ambient temperature average value, wherein the judgment criteria is faced
Boundary's point temperature be multiple critical point temperatures in the first ambient temperature average value and second ambient temperature
The critical point temperature that average value closes on, the multiple critical point temperature indicate the pressure that the outdoor unit is controlled under refrigeration mode
The end point temperatures in environment temperature section are preset based on the working frequency of contracting machine；
Face according to the first ambient temperature average value, the second ambient temperature average value and the judgment criteria
Boundary's point temperature controls the working frequency of the compressor.
2. the control method of compressor frequency according to claim 1, which is characterized in that described according to outside described first
Environment temperature average value determines that the step of judgment criteria critical point temperature includes:
If tn-1< tao’≤tn, then at the end of the first period timing, according to the first ambient temperature average value
The judgment criteria critical point temperature is determined with the interval midpoint temperature in the default environment temperature section；
Wherein, tn-1For the default environment temperature section (tn-1, tn] in interval limit value corresponding to critical point temperature, tn
For the default environment temperature section (tn-1, tn] in section upper limit value corresponding to critical point temperature, tao' it is described first
Ambient temperature average value, n are the positive integer more than or equal to 2.
3. the control method of compressor frequency according to claim 2, which is characterized in that if the tn-1< tao’≤tn,
Then at the end of the first period timing, according to the first ambient temperature average value and the default environment temperature area
Between interval midpoint temperature the step of determining the judgment criteria critical point temperature include:
If tn-1< tao’≤tnAnd tao’≥(tn-1+tn)/2, it is determined that critical point temperature tnFor the judgment criteria critical point temperature
Degree；
Wherein, (tn-1+tn)/2 indicate the interval midpoint temperature in the default environment temperature section.
4. the control method of compressor frequency according to claim 3, which is characterized in that
It is described to be marked according to the first ambient temperature average value, the second ambient temperature average value and the judgement
Quasi- critical point temperature controls the step of working frequency of the compressor and includes:
If (tn-1+tn)/2≤tao' < tn- M and tao″≤tn- N then controls the working frequency of the compressor by default work frequency
Rate Φn-1Output；
Wherein, tao" indicate that the second ambient temperature average value, M indicate that preset first judges temperature, N indicates default
Second judge temperature, M and N are respectively less than the default environment temperature section (tn-1, tn] silicon carbide spacing value, and N < M,
Φn-1For the default environment temperature section (tn-1, tn] corresponding to default working frequency.
5. the control method of compressor frequency according to claim 3, which is characterized in that described according to outside described first
Environment temperature average value, the second ambient temperature average value and the judgment criteria critical point temperature control the compression
The step of working frequency of machine includes:
If tn-M≤tao’≤tnOr tao' < tn- M and tao" > tn- N then controls the working frequency of the compressor by default work
Working frequency ΦnOutput；
Wherein, tao" indicate that the second ambient temperature average value, M indicate that preset first judges temperature, N indicates default
Second judge temperature, M and N are respectively less than the default environment temperature section (tn-1, tn] silicon carbide spacing value, and N < M,
ΦnFor the default environment temperature section (tn, tn+1] corresponding to default working frequency.
6. the control method of compressor frequency according to claim 2, which is characterized in that if the tn-1< tao’≤tn,
Then at the end of the first period timing, according to the first ambient temperature average value and the default environment temperature area
Between interval midpoint temperature the step of determining the judgment criteria critical point temperature include:
If tn-1< tao’≤tnAnd tao' < (tn-1+tn)/2, it is determined that critical point temperature tn-1For the judgment criteria critical point temperature
Degree；
Wherein, (tn-1+tn)/2 indicate the interval midpoint temperature in the default environment temperature section.
7. the control method of compressor frequency according to claim 6, which is characterized in that described according to outside described first
Environment temperature average value, the second ambient temperature average value and the judgment criteria critical point temperature control the compression
The step of working frequency of machine includes:
If tn-1≤tao’≤tn-1+ M or tao' > tn-1+ M and tao" < tn-1+ N, the then working frequency for controlling the compressor are pressed
Default working frequency Φn-2Output；
Wherein, tao" indicate that the second ambient temperature average value, M indicate that preset first judges temperature, N indicates default
Second judge temperature, M and N are respectively less than the default environment temperature section (tn-1, tn] silicon carbide spacing value, and N < M,
Φn-2For the default environment temperature section (tn-2, tn-1] corresponding to default working frequency, n be it is just whole more than or equal to 3
Number.
8. the control method of compressor frequency according to claim 6, which is characterized in that described according to outside described first
Environment temperature average value, the second ambient temperature average value and judgment criteria critical point temperature control the compressor
The step of working frequency includes:
As (tn-1+tnThe > t of)/2ao' > tn-1+ M and tao″≥tn-1+ N then controls the working frequency of the compressor by default work
Frequency Φn-1Output；
Wherein, tao" indicate that the second ambient temperature average value, M indicate that preset first judges temperature, N indicates default
Second judge temperature, M and N are respectively less than the default environment temperature section (tn-1, tn] silicon carbide spacing value, and N < M,
Φn-1For the default environment temperature section (tn-1, tn] corresponding to default working frequency, n be it is just whole more than or equal to 2
Number.
9. a kind of control device of compressor frequency characterized by comprising
It obtains module (120), it is flat for obtaining first ambient temperature of the outdoor unit of air conditioner (10) within the first period
Mean value and the second ambient temperature average value within the second period, wherein second period is first period knot
A period of time before beam, and the duration of second period is less than first period；
Determining module (130), for determining judgment criteria critical point temperature according to the first ambient temperature average value,
In, the judgment criteria critical point temperature be in multiple critical point temperatures with the first ambient temperature average value and described
The critical point temperature that second ambient temperature average value closes on, the multiple critical point temperature indicate to control under refrigeration mode
Make the end point temperatures that environment temperature section is preset based on the working frequency of the compressor of the outdoor unit；
Control module (140), for average according to the first ambient temperature average value, second ambient temperature
Value and the judgment criteria critical point temperature control the working frequency of the compressor.
10. a kind of air conditioner characterized by comprising
Memory (11)；And
Controller (12)；
The memory (11) is stored with computer program, and the computer program is read and run by the controller (12)
When, realize the method according to claim 1.
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| CN113091275A (en) * | 2021-04-08 | 2021-07-09 | 青岛海尔空调器有限总公司 | Preheating method, device and system for air conditioner compressor |
| CN113531774A (en) * | 2021-07-13 | 2021-10-22 | 珠海拓芯科技有限公司 | Air conditioner external ring temperature calculation method and device, air conditioner and computer storage medium |
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| CN109520098B (en) | 2020-07-03 |
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