CN106545966A - Air-conditioner and its control method for frequency and control device - Google Patents
Air-conditioner and its control method for frequency and control device Download PDFInfo
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- CN106545966A CN106545966A CN201610959988.3A CN201610959988A CN106545966A CN 106545966 A CN106545966 A CN 106545966A CN 201610959988 A CN201610959988 A CN 201610959988A CN 106545966 A CN106545966 A CN 106545966A
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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
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
Abstract
The invention discloses a kind of air-conditioner and its control method for frequency and control device.Methods described includes：Obtain current compressor frequency variation；If the current compressor frequency variation is more than zero, and when frequency hopping band is located at according to the compressor operating frequency after current compressor frequency variation adjustment, target operating frequency is determined according to the temperature difference between current room temperature and setting room temperature and the relation of the first given threshold；If the current compressor frequency variation is less than zero, and when frequency hopping band is located at according to the compressor operating frequency after current compressor frequency variation adjustment, target operating frequency is determined according to the temperature difference between current room temperature and setting room temperature and the relation of the second given threshold；Control compressor is run according to the target operating frequency.Using the present invention, can solve the problems, such as in prior art FREQUENCY CONTROL because of big, high frequent lifting frequency of the incorrect temperature fluctuation for causing of frequency hopping tape handling etc..
Description
Technical field
The invention belongs to air-conditioning technique field, specifically, is to be related to air-conditioner, more specifically, is to be related to sky
Adjust device and its control method for frequency and control device.
Background technology
At present, many air-conditioners can all adopt PID control method for frequency, and the method is based on indoor environment temperature and setting room
The difference of temperature approach makees PID arithmetic, output squeezing unit frequency control compressor operating, and is gradually lowered according to the size of difference
Compressor frequency, makes room temperature maintain in setting room temperature.
But, for the compressor of air-conditioner, in low frequency, Jing often occurs shaking larger situation, if not in addition
The service life of pipeline can be greatly shortened in control, longtime running.So, frequency hopping band control is both provided with the control of air-conditioner
System, the Frequency point larger to vibrations is directly skipped and is not reruned.In PID frequency control process, if calculating the pressure of output
Just in frequency hopping band, prior art is directly to skip the frequency hopping band to contracting unit frequency, and control compressor is according to the frequency hopping band
Upper one can running frequency or the next one can running frequency operation.But, so process and be easy to because of frequency jitter amplitude mistake
Cause the fluctuation of indoor temperature greatly, affect comfortableness.And, the fluctuation of indoor temperature, and then frequency is affected again
The control of rate, causes the lifting frequency action of high frequent, noise increase.
The content of the invention
It is an object of the invention to provide a kind of air-conditioner control method for frequency and control device, solve prior art frequency control
Because of the problem of big, the high frequent lifting frequency of the incorrect temperature fluctuation for causing of frequency hopping tape handling etc. in system.
For achieving the above object, the air-conditioner control method for frequency that the present invention is provided is given using following technical proposals
Realize：
A kind of air-conditioner control method for frequency, methods described include：
Current compressor frequency variation is obtained, judges the current compressor frequency variation whether more than zero；
If the current compressor frequency variation is more than zero, and judges according to after current compressor frequency variation adjustment
Compressor operating frequency when being located at frequency hopping band, judge that whether the temperature difference between current room temperature and setting room temperature is set more than first
Threshold value；If so, will be greater than the frequency hopping with upper limiting frequency first can running frequency as target operating frequency, otherwise, will
Current compressor running frequency is used as target operating frequency；
If the current compressor frequency variation is less than zero, and judges according to after current compressor frequency variation adjustment
Compressor operating frequency when being located at frequency hopping band, judge that whether the temperature difference between current room temperature and setting room temperature is set more than second
Threshold value；If so, using less than first of the frequency hopping lower limit frequency can running frequency as target operating frequency, otherwise, will
Current compressor running frequency is used as target operating frequency；
Control compressor is run according to the target operating frequency.
Method as above, first given threshold are less than the second given threshold.
Method as above, the acquisition current compressor frequency variation are specifically included：
The current room temperature and the setting room temperature are obtained, the temperature between the current room temperature and the setting room temperature is calculated
Difference, performs PID arithmetic based on the temperature difference, obtains the current compressor frequency variation.
Preferably, the PID is increment type PID.
Method as above, the judgement is according to the compressor operating after current compressor frequency variation adjustment
Frequency is located at frequency hopping band, specifically includes：
Current compressor running frequency is obtained, according to the current compressor frequency variation and current compressor operation frequency
Rate obtains the compressor operating frequency after the adjustment, and the compressor operating frequency after the adjustment and the frequency hopping band are made to compare
Compared with if the compressor operating frequency after the adjustment belongs to the frequency in the frequency hopping band, judging the compression after the adjustment
Machine running frequency is located at the frequency hopping band.
Method as above, if the current compressor frequency variation is zero, by current compressor operation frequency
Rate is run according to the target operating frequency as the target operating frequency, control compressor.
To realize aforementioned invention purpose, the air-conditioner frequency control apparatus that the present invention is provided are using following technical proposals come real
It is existing：
A kind of air-conditioner frequency control apparatus, described device include：
Current compressor frequency variation acquiring unit, for obtaining current compressor frequency variation；
Current compressor frequency variation judging unit, for whether judging the current compressor frequency variation more than zero,
And export judged result；
Frequency hopping band judging unit, for judging that compressor operating frequency is after adjusting according to the current compressor frequency variation
It is no positioned at frequency hopping band, and export judged result；
First frequency processing unit, the result for exporting in the current compressor frequency variation judging unit are worked as described
Front compressor frequency variable quantity is more than zero, and the frequency hopping is according to current compressor frequency with the result that judging unit is exported
When compressor operating frequency after the adjustment of rate variable quantity is located at frequency hopping band, judge that the temperature difference between current room temperature and setting room temperature is
It is no to be more than the first given threshold；If so, will be greater than the frequency hopping with upper limiting frequency first can running frequency as target transport
Line frequency, otherwise, using current compressor running frequency as target operating frequency；
Second frequency processing unit, the result for exporting in the current compressor frequency variation judging unit are worked as described
Front compressor frequency variable quantity is less than zero, and the frequency hopping is according to current compressor frequency with the result that judging unit is exported
When compressor operating frequency after the adjustment of rate variable quantity is located at frequency hopping band, judge that the temperature difference between current room temperature and setting room temperature is
It is no to be more than the second given threshold；If so, using less than first of the frequency hopping lower limit frequency can running frequency transport as target
Line frequency, otherwise, using current compressor running frequency as target operating frequency；
Compressor control unit, runs according to the target operating frequency for controlling compressor.
Device as above, first given threshold are less than the second given threshold.
Device as above, the current compressor frequency variation acquiring unit are specifically included：
Current room temperature obtains subelement, for obtaining current room temperature；
Setting room temperature obtains subelement, for obtaining setting room temperature；
The temperature difference obtains subelement, for obtaining the temperature difference between the current room temperature and the setting room temperature；
Current compressor frequency variation determination subelement, for performing PID arithmetic based on the temperature difference, determines the current pressure
Contracting unit frequency variable quantity.
Present invention also offers a kind of air-conditioner with said frequencies control device.
Compared with prior art, advantages of the present invention and good effect are：Using the method and apparatus control that the present invention is provided
During air-conditioner running frequency processed, if the compressor operating frequency after adjustment is located in frequency hopping band, and non-immediate frequency hopping band is skipped
Lifting frequency is carried out, but lifting frequency is decided whether according to the temperature difference between current room temperature and setting room temperature, set when the temperature difference is more than
When determining threshold value, lifting frequency is just performed, if the temperature difference is not more than threshold value, keep frequency is constant.Thus, greatly reduce the temperature difference little
In the case of also perform frequency hopping lifting frequency and produce indoor temperature fluctuation band is caused because frequency jitter amplitude is excessive
The problem that the comfortableness come is reduced, while it also avoid because the noise of frequent lifting frequency generation is big, compressor and pipeline life-span drop
Low problem.
After the specific embodiment of the present invention is read in conjunction with the accompanying, the other features and advantages of the invention will become more clear
Chu.
Description of the drawings
Fig. 1 is the flow chart based on air-conditioner control method for frequency one embodiment of the present invention；
Fig. 2 is the structured flowchart based on air-conditioner frequency control apparatus one embodiment of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below with reference to drawings and Examples,
The present invention is described in further detail.
Fig. 1 is referred to, the figure show the flow chart based on air-conditioning control method for frequency one embodiment of the present invention.
As shown in figure 1, the embodiment realizes that the method for air-conditioning FREQUENCY CONTROL includes the process with following steps：
Step 11：Current compressor frequency variation is obtained, judges current compressor frequency variation whether more than zero.
Current compressor frequency variation, refer to it is being obtained using certain technological means, for current working（Including
But be not limited to air-conditioner environment indoors, the operational mode of air-conditioner）Current compressor running frequency is adjusted
The frequency variation for being used.After obtaining the current compressor frequency variable quantity, judge that current compressor frequency variation is
It is no to be more than zero.Wherein, current compressor frequency variation is likely larger than zero, as on the occasion of expression compressor needs raising frequency to work；
It is likely to less than zero, as negative value, represents that compressor needs frequency reducing to work.It is of course also possible to zero is equal to, namely expression is not required to
Current operation frequency is adjusted.Also be less than zero more than zero according to current compressor frequency variation, execution step 12 or
The frequency processing process of person's step 13.
Step 12：If current compressor frequency variation is more than zero, and judges to be adjusted according to current compressor frequency variation
When compressor operating frequency after whole is located at frequency hopping band, judge the temperature difference between current room temperature and setting room temperature whether more than first
Given threshold.If so, will be greater than frequency hopping with upper limiting frequency first can running frequency as target operating frequency；Otherwise, will
Current compressor running frequency is used as target operating frequency.Then, go to step 14.
As described above, if current compressor frequency variation is more than zero, represent that compressor needs raising frequency to work.If
Frequency hopping band is located at according to the compressor operating frequency after the adjustment of current compressor frequency variation, namely needs to skip the frequency of operation
Rate, now, is not immediately performed frequency hopping process, but decides whether raising frequency according to current room temperature and setting room temperature.
Specifically, if it is decided that the compressor operating frequency after adjustment is located in frequency hopping band, obtain current room temperature and set
Determine the temperature difference between room temperature, and make comparisons with the first given threshold, to judge the temperature difference whether more than the first given threshold.Its
In, current room temperature refers to current indoor ambient temperature, can be by the temperature sensor that is arranged on air-conditioner, be for example arranged on
Temperature detected by the temperature sensor of indoor set air inlet；And set room temperature and refer to the setting for expecting that interior can reach
Temperature, and to the target temperature that cooler compressor frequency is controlled, the generally design temperature, or intelligence of user
One recommended temperature of energy air-conditioner.First given threshold is the temperature threshold for pre-setting, be one on the occasion of, for characterize work as
The size of the temperature difference between front room temperature and setting room temperature, and can be changed by authorizing.
If it is determined that the temperature difference is more than the first given threshold, show that current room temperature is larger with setting room temperature difference, in order to meet
The major regulatory target of fast temperature adjustment, needs to make compressor raising frequency control.In the case of this, due to being provided with frequency hopping band control
System, the frequency of frequency hopping band need the running frequency that skip, cannot function as compressor, then will be greater than frequency hopping with upper limiting frequency first
It is individual can running frequency as target operating frequency.For example, air-conditioner has the frequency hopping band of 31-35Hz, and the control of compressor frequency
Step-length processed is 1Hz.If being 33Hz according to the compressor operating frequency after the adjustment of current compressor frequency variation, in 31-
In the frequency hopping band of 35Hz, in the case that satisfaction makees the raising frequency process of frequency hopping, the frequency hopping band of 31-35Hz will be skipped.And due to frequency
Step-length is controlled for 1Hz, that is, more than the frequency hopping with upper limiting frequency 35Hz first can running frequency be 36Hz, then by 36Hz
As target operating frequency.
If it is determined that and the temperature difference is not more than the first given threshold, showing current room temperature with setting room temperature difference less, now,
Major regulatory target stabilized to temperature and frequency, does not make the control of compressor raising frequency, and it is constant to remain on frequency, that is,
Using current compressor running frequency as target operating frequency.For example, still by taking the frequency hopping band of above-mentioned 31-35Hz as an example, if worked as
Front compressor operating frequency is 30Hz, is 33Hz according to the compressor operating frequency after the adjustment of current compressor frequency variation,
In the frequency hopping band of 31-35Hz, as the temperature difference is not more than the first given threshold, meets the situation that raising frequency is not processed, then will
30Hz is used as target operating frequency.
Step 13：If current compressor frequency variation is less than zero, and judges to be adjusted according to current compressor frequency variation
When compressor operating frequency after whole is located at frequency hopping band, judge the temperature difference between current room temperature and setting room temperature whether more than second
Given threshold.If so, using less than first of frequency hopping lower limit frequency can running frequency as target operating frequency；Otherwise, will
Current compressor running frequency is used as target operating frequency.Then, go to step 14.
As described above, if current compressor frequency variation is less than zero, represent that compressor needs frequency reducing to work.If
Frequency hopping band is located at according to the compressor operating frequency after the adjustment of current compressor frequency variation, namely needs to skip the frequency of operation
Rate, now, is not immediately performed frequency hopping process, but decides whether frequency reducing according to current room temperature and setting room temperature.
Specifically, if it is decided that the compressor operating frequency after adjustment is located in frequency hopping band, obtain current room temperature and set
Determine the temperature difference between room temperature, and make comparisons with the second given threshold, to judge the temperature difference whether more than the second given threshold.Its
In, current room temperature refers to current indoor ambient temperature, can be by the temperature sensor that is arranged on air-conditioner, be for example arranged on
Temperature detected by the temperature sensor of indoor set air inlet；And set room temperature and refer to the setting for expecting that interior can reach
Temperature, and to the target temperature that cooler compressor frequency is controlled, the generally design temperature, or intelligence of user
One recommended temperature of energy air-conditioner.Second given threshold is the temperature threshold for pre-setting, be one on the occasion of, for characterize work as
The size of the temperature difference between front room temperature and setting room temperature, and can be changed by authorizing.
If it is determined that the temperature difference is more than the second given threshold, show that current room temperature is larger with setting room temperature difference, in order to meet
Fast temperature is adjusted and energy-saving major regulatory target, needs to make compressor frequency reducing control.In the case of this, due to arranging
There is frequency hopping band to control, the frequency of frequency hopping band needs the running frequency that skip, cannot function as compressor, then will be less than frequency hopping lower limit
First of frequency can running frequency as target operating frequency.For example, still with air-conditioner have 31-35Hz frequency hopping band and
Compressor frequency controls step-length for as a example by 1Hz.If according to the compressor operating after the adjustment of current compressor frequency variation
Frequency is 33Hz, in the frequency hopping band of 31-35Hz, in the case that satisfaction makees the down conversion process of frequency hopping, will skip 31-35Hz's
Frequency hopping band.And as FREQUENCY CONTROL step-length is 1Hz, that is, first less than frequency hopping lower limit frequency 31Hz can run frequency
Rate is 30Hz, then using 30Hz as target operating frequency.
If it is determined that and the temperature difference is not more than the second given threshold, showing current room temperature with setting room temperature difference less, now,
Major regulatory target stabilized to temperature and frequency, does not make compressor frequency reducing control, and it is constant to remain on frequency, that is,
Using current compressor running frequency as target operating frequency.For example, still by taking the frequency hopping band of above-mentioned 31-35Hz as an example, if worked as
Front compressor operating frequency is 37Hz, is 33Hz according to the compressor operating frequency after the adjustment of current compressor frequency variation,
In the frequency hopping band of 31-35Hz, as the temperature difference is not more than the second given threshold, meets the situation of not down conversion process, then will
37Hz is used as target operating frequency.
Step 14：The compressor of control air-conditioning is run according to target operating frequency.
Specifically, it is to control compressor to run according to the target operating frequency determined by step 12 or step 13.
It should be appreciated that during operation of air conditioner, the process of continuous execution step 11 to step 14 is realized transporting compressor
The continuous control of line frequency.
During the method control air-conditioner running frequency provided using above-described embodiment, if the compressor operating frequency after adjustment
Rate is located in frequency hopping band, and non-immediate frequency hopping band of skipping carries out lifting frequency, but according between current room temperature and setting room temperature
Deciding whether lifting frequency, when the temperature difference is more than given threshold, just execution lifting frequency, if the temperature difference is not more than threshold value, protects the temperature difference
Hold frequency constant.Thus, greatly reduce the temperature difference it is little in the case of also perform frequency hopping lifting frequency and produce because of frequency
The problem that the excessive comfortableness for causing indoor temperature fluctuation to bring of bounce amplitude is reduced, while it also avoid because of frequently lifting
Noise that frequency is produced is big, the problem of compressor and pipeline service life reduction etc..
As previously indicated, if the current compressor frequency variation obtained in step 11 is zero, expression need not be to working as
Front running frequency is adjusted, then using current compressor running frequency as target operating frequency, control compressor is according to the target
Running frequency is continued to run with.
For the second given threshold in the first given threshold and step 13 in above-mentioned steps 12, identical can be taken
Value.Used as preferred embodiment, the first given threshold is less than the second given threshold.That is, judging whether to perform frequency hopping liter
The temperature threshold of frequency is less than the temperature threshold for judging whether execution frequency hopping frequency reducing.So process purpose be, selection of small
Raising frequency judgement threshold value, so as to timely enter raising frequency process, reach under refrigerating state by room temperature drop quickly to setting room
Temperature, under the state that heats by room temperature quickly be increased to setting room temperature fast regulating temperature purpose, improve user Thermal comfort.
As preferred embodiment, current compressor frequency variation is obtained in step 11, is specifically included：
Current room temperature and setting room temperature are obtained, the temperature difference between current room temperature and setting room temperature is calculated, PID fortune is performed based on the temperature difference
Calculate, obtain current compressor frequency variation, to realize that quick, stable frequency is adjusted.
Used as preferred embodiment, PID is increment type PID, to obtain more preferable regulating effect.
In step 12 and step 13, it is required to judge the compressor operating according to after the adjustment of current compressor frequency variation
Whether frequency is located in frequency hopping band.As a kind of preferred embodiment, can be judged using following processes：
Current compressor running frequency is obtained, is adjusted according to current compressor frequency variation and current compressor running frequency
Compressor operating frequency after whole；Then, the compressor operating frequency after adjustment is made comparisons with frequency hopping band；If the pressure after adjustment
Contracting machine running frequency belongs to the frequency in frequency hopping band, then judge that the compressor operating frequency after adjustment is located in frequency hopping band, conversely,
Then it is not located in frequency hopping band.
Compressor operating frequency after being adjusted according to current compressor frequency variation and current compressor running frequency
The concrete grammar of rate may be referred to prior art to realize.
Fig. 2 is referred to, the figure show the structured flowchart of the one embodiment based on air-conditioning frequency control apparatus of the present invention.
As shown in Fig. 2 the embodiment realizes construction unit included by the device of air-conditioning FREQUENCY CONTROL, each construction unit
Function and annexation each other it is as follows：
Current compressor frequency variation acquiring unit 21, for obtaining current compressor frequency variation.
Current compressor frequency variation judging unit 22, for judging current compressor frequency variation acquiring unit 21
Whether acquired current compressor frequency variation is more than zero, and export judged result.
Frequency hopping band judging unit 23, for judging working as according to acquired in current compressor frequency variation acquiring unit 21
After front compressor frequency variable quantity adjustment, whether compressor operating frequency is located at frequency hopping band, and export judged result.
First frequency processing unit 24, the result for exporting in current compressor frequency variation judging unit 22 are to work as
Front compressor frequency variable quantity is more than zero, and frequency hopping is to be changed according to current compression unit frequency with the result that judging unit 23 is exported
When compressor operating frequency after amount adjustment is located at frequency hopping band, judge whether the temperature difference between current room temperature and setting room temperature is more than
First given threshold；If so, will be greater than frequency hopping with upper limiting frequency first can running frequency as target operating frequency, it is no
Then, using current compressor running frequency as target operating frequency.
Second frequency processing unit 25, the result for exporting in current compressor frequency variation judging unit 22 are to work as
Front compressor frequency variable quantity is less than zero, and frequency hopping is to be changed according to current compression unit frequency with the result that judging unit 23 is exported
When compressor operating frequency after amount adjustment is located at frequency hopping band, judge whether the temperature difference between current room temperature and setting room temperature is more than
Second given threshold；If so, using less than first of frequency hopping lower limit frequency can running frequency as target operating frequency, it is no
Then, using current compressor running frequency as target operating frequency.
Compressor control unit 26, for controlling the object run frequency that compressor is determined according to first frequency processing unit 24
The target operating frequency that rate or second frequency processing unit 25 determine is running.
Each construction unit in above-described embodiment runs corresponding software program, and it is right to realize according to the method for Fig. 1 embodiments
The FREQUENCY CONTROL of air-conditioning, produced technique effect may be referred to the description of Fig. 1 embodiments of the method.
In as preferred embodiment, the first above-mentioned given threshold is less than the second given threshold.
Also, in a preferred embodiment, current compressor frequency variation acquiring unit is specifically included：
Current room temperature obtains subelement, for obtaining current room temperature.
Setting room temperature obtains subelement, for obtaining setting room temperature.
The temperature difference obtains subelement, and for obtaining, current outdoor obtains the current room temperature of subelement acquisition and setting room temperature is obtained
The temperature difference between the setting room temperature that subelement is obtained.
Current compressor frequency variation determination subelement, for obtaining the temperature difference execution that subelement is obtained based on the temperature difference
PID arithmetic, determines current compressor frequency variation.
It is furthermore preferred that being carried out increment type PID computing.
The frequency control apparatus of the various embodiments described above can be applied in air-conditioner, realized to cooler compressor frequency
Control.
Above example is only illustrating technical scheme, rather than is limited；Although with reference to aforementioned reality
Apply example to be described in detail the present invention, for the person of ordinary skill of the art, still can be to aforementioned enforcement
Technical scheme described in example is modified, or carries out equivalent to which part technical characteristic；And these are changed or replace
Change, do not make the essence of appropriate technical solution depart from the spirit and scope of claimed technical solution of the invention.
Claims (10)
1. a kind of air-conditioner control method for frequency, it is characterised in that methods described includes：
Current compressor frequency variation is obtained, judges the current compressor frequency variation whether more than zero；
If the current compressor frequency variation is more than zero, and judges according to after current compressor frequency variation adjustment
Compressor operating frequency when being located at frequency hopping band, judge that whether the temperature difference between current room temperature and setting room temperature is set more than first
Threshold value；If so, will be greater than the frequency hopping with upper limiting frequency first can running frequency as target operating frequency, otherwise, will
Current compressor running frequency is used as target operating frequency；
If the current compressor frequency variation is less than zero, and judges according to after current compressor frequency variation adjustment
Compressor operating frequency when being located at frequency hopping band, judge that whether the temperature difference between current room temperature and setting room temperature is set more than second
Threshold value；If so, using less than first of the frequency hopping lower limit frequency can running frequency as target operating frequency, otherwise, will
Current compressor running frequency is used as target operating frequency；
Control compressor is run according to the target operating frequency.
2. method according to claim 1, it is characterised in that first given threshold is less than the second given threshold.
3. method according to claim 1, it is characterised in that the acquisition current compressor frequency variation is concrete to wrap
Include：
The current room temperature and the setting room temperature are obtained, the temperature between the current room temperature and the setting room temperature is calculated
Difference, performs PID arithmetic based on the temperature difference, obtains the current compressor frequency variation.
4. method according to claim 3, it is characterised in that the PID is increment type PID.
5. method according to any one of claim 1 to 4, it is characterised in that the judgement is according to the current compression
Compressor operating frequency after the adjustment of unit frequency variable quantity is located at frequency hopping band, specifically includes：
Current compressor running frequency is obtained, according to the current compressor frequency variation and current compressor operation frequency
Rate obtains the compressor operating frequency after the adjustment, and the compressor operating frequency after the adjustment and the frequency hopping band are made to compare
Compared with if the compressor operating frequency after the adjustment belongs to the frequency in the frequency hopping band, judging the compression after the adjustment
Machine running frequency is located at the frequency hopping band.
6. method according to any one of claim 1 to 4, it is characterised in that if current compression unit frequency change
Amount is zero, and using the current compressor running frequency as the target operating frequency, control compressor is transported according to the target
Line frequency is run.
7. a kind of air-conditioner frequency control apparatus, it is characterised in that described device includes：
Current compressor frequency variation acquiring unit, for obtaining current compressor frequency variation；
Current compressor frequency variation judging unit, for whether judging the current compressor frequency variation more than zero,
And export judged result；
Frequency hopping band judging unit, for judging that compressor operating frequency is after adjusting according to the current compressor frequency variation
It is no positioned at frequency hopping band, and export judged result；
First frequency processing unit, the result for exporting in the current compressor frequency variation judging unit are worked as described
Front compressor frequency variable quantity is more than zero, and the frequency hopping is according to current compressor frequency with the result that judging unit is exported
When compressor operating frequency after the adjustment of rate variable quantity is located at frequency hopping band, judge that the temperature difference between current room temperature and setting room temperature is
It is no to be more than the first given threshold；If so, will be greater than the frequency hopping with upper limiting frequency first can running frequency as target transport
Line frequency, otherwise, using current compressor running frequency as target operating frequency；
Second frequency processing unit, the result for exporting in the current compressor frequency variation judging unit are worked as described
Front compressor frequency variable quantity is less than zero, and the frequency hopping is according to current compressor frequency with the result that judging unit is exported
When compressor operating frequency after the adjustment of rate variable quantity is located at frequency hopping band, judge that the temperature difference between current room temperature and setting room temperature is
It is no to be more than the second given threshold；If so, using less than first of the frequency hopping lower limit frequency can running frequency transport as target
Line frequency, otherwise, using current compressor running frequency as target operating frequency；
Compressor control unit, runs according to the target operating frequency for controlling compressor.
8. device according to claim 7, it is characterised in that first given threshold is less than the second given threshold.
9. the device according to claim 7 or 8, it is characterised in that the current compressor frequency variation acquiring unit
Specifically include：
Current room temperature obtains subelement, for obtaining current room temperature；
Setting room temperature obtains subelement, for obtaining setting room temperature；
The temperature difference obtains subelement, for obtaining the temperature difference between the current room temperature and the setting room temperature；
Current compressor frequency variation determination subelement, for performing PID arithmetic based on the temperature difference, determines the current pressure
Contracting unit frequency variable quantity.
10. a kind of air-conditioner, it is characterised in that the air-conditioner includes the sky any one of the claims 7 to 9
Adjust device frequency control apparatus.
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| CN113324328A (en) * | 2021-05-11 | 2021-08-31 | Tcl空调器(中山)有限公司 | Method and device for determining shielding frequency of refrigeration equipment and storage medium |
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