CN106052009B - Convertible frequency air-conditioner control method for frequency and control device - Google Patents
Convertible frequency air-conditioner control method for frequency and control device Download PDFInfo
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- CN106052009B CN106052009B CN201610354086.7A CN201610354086A CN106052009B CN 106052009 B CN106052009 B CN 106052009B CN 201610354086 A CN201610354086 A CN 201610354086A CN 106052009 B CN106052009 B CN 106052009B
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Classifications
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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
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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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
-
- 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
-
- 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
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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
- F24F11/65—Electronic processing for selecting an operating mode
Abstract
The invention discloses a kind of convertible frequency air-conditioner control method for frequency and control device, the method includes：Air conditioner refrigerating is run, and is carried out room temperature PID operation according to the temperature difference of real-time indoor environment temperature and setting target temperature, is obtained first frequency；Indoor heat source where detecting air-conditioning simultaneously determines the real-time range between heat source and air-conditioning, frequency corresponding with real-time range is determined, as second frequency；If real-time indoor environment temperature selects first frequency with the smaller value in second frequency as target frequency not less than setting comfort temperature；If real-time indoor environment temperature is less than setting comfort temperature, according to the fuzzy control selection target frequency based on real-time coil temperature；The compressor operating of air-conditioning is controlled according to target frequency.With the application of the invention, energy saving, the comfortable control of air-conditioning may be implemented.
Description
Technical field
The invention belongs to air-conditioning technique fields, specifically, being the air-conditioning equipment for being related to adjusting room air, more
It says to body, is to be related to convertible frequency air-conditioner control method for frequency and control device.
Background technology
Air-conditioning summer can freeze, winter can heat, and can adjust indoor temperature and reach cool in summer and warm in winter, provide to the user
Comfortable environment.While air-conditioning provides comfort to the user, incident is the contradiction with high energy consumption.Energy expenditure is not
User's financial burden is increased only, it is also opposite with energy-saving and environment-friendly trend.Therefore, how to be provided to the user comfortably using air-conditioning
The energy consumption that air-conditioning is reduced while environment, is that current air conditioner producer has been working hard solve the problems, such as.
Existing convertible frequency air-conditioner can control compressor operating frequency according to indoor environment temperature and setting target temperature, reach
To energy-saving purpose.But it can not be realized according to the control mode of temperature control compressor operating frequency merely more excellent
Energy saving and comfortable control.
Invention content
The object of the present invention is to provide a kind of convertible frequency air-conditioner control method for frequency and control device, realize air-conditioning it is energy saving,
Comfortable control.
For achieving the above object, convertible frequency air-conditioner control method for frequency provided by the invention is given using following technical proposals
To realize：
A kind of convertible frequency air-conditioner control method for frequency, the method includes：
Air conditioner refrigerating is run, and is obtained real-time indoor environment temperature and setting indoor target temperature, is calculated the real-time interior
The temperature difference between environment temperature and the setting indoor target temperature, as the real-time indoor temperature difference, according to the real-time Indoor Temperature
Difference carries out room temperature PID operation, obtains first frequency；Indoor heat source where detection air-conditioning and the determining heat source and air-conditioning in real time
Between real-time range, corresponding with real-time range frequency, work are obtained according to the correspondence of known distance and frequency
For second frequency；
The real-time indoor environment temperature is made comparisons with setting comfort temperature；
If the real-time indoor environment temperature is not less than the setting comfort temperature, the first following control is executed：Selection
The compressor operating of the first frequency and the smaller value control air-conditioning in the second frequency；
If the real-time indoor environment temperature is less than the setting comfort temperature, the second following control is executed：It obtains empty
The real-time coil temperature for adjusting evaporator makes comparisons the real-time coil temperature with setting coil pipe target temperature；If described real-time
Coil temperature is more than the setting coil pipe target temperature, select smaller value in the first frequency and the second frequency as
Target frequency controls the compressor operating of air-conditioning according to the target frequency；If the real-time coil temperature is set no more than described
The current operation frequency of compressor is reduced and obtains third frequency by price fixing pipe target temperature, selects the first frequency, described the
The compressor operating of smaller value control air-conditioning in two frequencies and the third frequency.
To realize that aforementioned invention purpose, convertible frequency air-conditioner frequency control apparatus provided by the invention are given using following technical proposals
To realize：
A kind of convertible frequency air-conditioner frequency control apparatus, described device include：
Indoor environment temperature acquiring unit, for obtaining real-time indoor environment temperature；
Coil temperature acquiring unit, the real-time coil temperature for obtaining A/C evaporator；
Room temperature PID arithmetic element, for calculating between the real-time indoor environment temperature and setting indoor target temperature
The temperature difference carries out PID arithmetic according to the real-time indoor temperature difference, obtains and export first frequency as the real-time indoor temperature difference；
Heat source is determining and distance acquiring unit, for indoor heat source where detecting air-conditioning in real time and determine the heat source with
Real-time range between air-conditioning；
Second frequency acquiring unit, for being obtained and the real-time range according to the correspondence of known distance and frequency
Corresponding frequency, as second frequency；
Control model selecting unit for the real-time indoor environment temperature and setting comfort temperature, and exports ratio
Relatively result is as control model selection signal；
First control unit, the comparison result for being exported in the control model selecting unit are the real-time indoor ring
When border temperature is not less than the setting comfort temperature, select the first frequency with the smaller value in the second frequency as mesh
Frequency is marked, the compressor operating of air-conditioning is controlled according to the target frequency；
Second control unit, the comparison result for being exported in the control model selecting unit are the real-time indoor ring
When border temperature is less than the setting comfort temperature, the real-time coil temperature is made comparisons with setting coil pipe target temperature；If institute
State real-time coil temperature be more than the setting coil pipe target temperature, select the first frequency with it is smaller in the second frequency
Value is used as target frequency, and the compressor operating of air-conditioning is controlled according to the target frequency；If the real-time coil temperature is not more than
The current operation frequency of compressor is reduced and obtains third frequency by the setting coil pipe target temperature, select the first frequency,
Smaller value in the second frequency and the third frequency controls the pressure of air-conditioning according to the target frequency as target frequency
Contracting machine is run.
Compared with prior art, the advantages and positive effects of the present invention are：
In the present invention, when the compressor to convertible frequency air-conditioner carries out FREQUENCY CONTROL, temperature factor and heat source have been considered
With the cooperation between the distance factor of air conditioning room, the energy-saving run of air-conditioning and comfortable air-supply are realized.Moreover, it is contemplated that temperature factor pair
In the control of compressor frequency, according to indoor environment temperature with setting comfort temperature size, selection using room temperature PID control or
Using the fuzzy control based on evaporator coil temperature, system can be reached when room temperature is high in time, quickly cool down to room
Cold purpose, but can by coil temperature stablize in coil pipe target temperature so that air conditioning exhausting temperature pleasant, reach it is cool without
Cold comfortable cooling effect.
After the specific implementation mode of the present invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear
Chu.
Description of the drawings
Fig. 1 is the flow chart of convertible frequency air-conditioner control method for frequency one embodiment of the present invention；
Fig. 2 is the structure diagram of convertible frequency air-conditioner frequency control apparatus one embodiment of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below with reference to drawings and examples,
Invention is further described in detail.
Fig. 1 is referred to, which show the flow chart of convertible frequency air-conditioner control method for frequency one embodiment of the present invention.
As shown in Figure 1, the embodiment realize convertible frequency air-conditioner FREQUENCY CONTROL method using the flow with following step come
It realizes：
Step 11：Air conditioner refrigerating is run, and obtains real-time indoor environment temperature, setting indoor target temperature, meanwhile, it examines in real time
Indoor heat source where surveying air-conditioning and the real-time range for determining heat source and air conditioning room.
Specifically, when air-conditioning is switched on and runs, the indoor environment temperature in room residing for air-conditioning is detected in real time, is detected in real time
Temperature as real-time indoor environment temperature.So-called real-time indoor environment temperature refers to after air-conditioning booting operation, according to setting
Constant temperature degree sample frequency constantly obtains and newer indoor environment temperature.The acquisition of real-time indoor environment temperature may be used existing
Technology is realized.For example, by being arranged in air-conditioning air inlet or being detected into wind-warm syndrome close to the temperature sensor of air-conditioning air inlet
Degree, the master control borad of air-conditioning is by the output signal of collecting temperature sensor and is handled, to get inlet air temperature, and will
The temperature is as real-time indoor environment temperature.
Setting indoor target temperature refers to wishing the attainable target temperature of indoor environment institute, the setting indoor target temperature
It can be the temperature value that user is inputted by remote controler or control terminal for air conditioner or air-conditioning panel, can also be air-conditioning master
The setting value that control plate calls automatically.No matter the temperature value is set using which kind of mode, can be got by air-conditioning master control borad.
After air-conditioning booting operation, the real-time indoor environment temperature in addition to detecting room residing for air-conditioning in real time will also be examined in real time
Indoor heat source where surveying air-conditioning, and determine the real-time range of heat source and air conditioning room.So-called real-time range is opened in air-conditioning
After machine operation, according to setting sample frequency constantly acquisition and the distance between newer indoor airflow and air-conditioning.The detection of heat source
And the prior art may be used to realize in the determination of distance of heat source and air conditioning room.For example, by the way that infrared battle array is arranged on air-conditioning
Sensor or common infrared sensor, calculate in conjunction with certain algorithm.
As preferred embodiment, indoor heat source where detection air-conditioning and determine between heat source and air-conditioning it is real-time away from
From being obtained, specifically included using following technological means：
The infrared sensor controlled in air-conditioning carries out rotary scanning, the temperature information in scanning range is obtained, according to temperature
Information acquisition heat source temperature curve.
Specifically, infrared sensor and rotating mechanism can be arranged on air-conditioning, the controller of air-conditioning controls rotating machine
Structure driving infrared sensor rotates in larger angular range.The infrared sensor of rotation is to the region within the scope of scanning angle
It is scanned, the temperature information in real-time acquisition scans region.Temperature information reflection is sweeping of currently acquiring of infrared sensor
The radiation intensity of object in range is retouched, radiation intensity is stronger, then it represents that the temperature value of infrared sensor acquisition is higher.Therefore, exist
In the scanning process of infrared sensor, scanning is arrived again to the process after heat source, infrared sensing to source center before scanning to heat source
The temperature value of device sampling is to arrive a low process again from low to high, this is process of the scanning to a heat source.Air-conditioning receives red
The temperature information of outer sensor sampling is generated indoor by the analysis of the i.e. radiation intensity of temperature information acquired to infrared sensor
The temperature curve of heat source.
Infrared sensor rotation is driven by rotational structure, so only needing single-point infrared sensor that entire sky can be realized
Between range temperature scanning, do not need array infrared sensor, data processing is relatively simple, expend the time it is short.
Then, according to heat source temperature curve determine where air-conditioning between indoor heat source and heat source and air-conditioning it is real-time away from
From.
Specifically, for air conditioner by the crest value in analysis temperature curve, crest value corresponds to the radiation intensity of heat source, according to
Crest value may determine that the number of heat source in current environment, wherein the coordinate value of crest value is the coordinate value i.e. position of heat source.
Moreover, the temperature value of infrared sensor sampling and the distance of object have relationship, and when object distance air-conditioning is remoter, infrared sensing
The temperature value of device acquisition is lower, conversely, closer to object true temperature value.It specifically, can be according to temperature in temperature curve most
Difference between high level and minimum determines the distance between heat source and air conditioner, is acquired according to infrared sensor in the scan period
The maximum value of temperature value and the difference of minimum value can judge that the heat source of Current Scan and the relative distance of background, difference are got over
It is small, illustrate that heat source and background are close, i.e., heat source with air-conditioning farther out.
Step 12：It calculates real-time indoor environment temperature and sets the temperature difference between indoor target temperature, as real-time interior
The temperature difference carries out room temperature PID operation according to the real-time indoor temperature difference, obtains first frequency；It is corresponding with frequency according to known distance
Relation acquisition frequency corresponding with real-time range, as second frequency.
Master control borad calculates temperature between the two after getting real-time indoor environment temperature and setting indoor target temperature
Difference, as the real-time indoor temperature difference.Then, room temperature PID operation is carried out according to the real-time indoor temperature difference, acquisition controls compressor
A frequency, and the frequency is defined as first frequency.Wherein, room temperature PID operation carried out according to the temperature difference, obtained to compressor
The prior art may be used to realize in the specific method of the target frequency controlled, is not elaborated and limits herein.
Meanwhile corresponding with real-time range frequency is obtained also according to the correspondence of known distance and frequency, as the
Two frequencies.
Specifically, being previously stored with correspondence of the distance with frequency in the memory of air-conditioning master control borad, wherein away from
From referring to the distance between indoor airflow and air-conditioning, frequency refers to the running frequency of compressor.Preferably, pair of distance and frequency
Should be related to be by research staff under theoretical direction, it is obtained by a large amount of operation of air conditioner simulated experiment, can be as far as possible
Take into account air-conditioning comfort and energy saving.Moreover, positively related relationship is presented between distance and frequency.That is, apart from smaller, frequency
Rate is also lower；Vice versa.Moreover, the correspondence between distance and frequency, can be calculated by specific calculation
A kind of relationship, can also be the one-to-one relationship of form by table.It is calculated if it is by calculation,
Calculation is prestored, after obtaining real-time range, real-time range is calculated according to real-time range and calculation and is corresponded to
Frequency and as second frequency.And if the one-to-one relationship that the form by table is formed, obtaining real-time range
Later, the mode tabled look-up can be taken to read out the corresponding frequency of real-time range and as second frequency according to real-time range.It builds
Vertical distance and the starting point of the correspondence of frequency are：Heat source is different from air-conditioning distance, and the requirement to leaving air temp is different.It is making
Under chill formula, when to enable air-conditioning to provide outlet air comfort the most rational, heat source and smaller air-conditioning distance for heat source, the phase
Hope increase leaving air temp, the wind for avoiding temperature too low to heat source and cause discomfort, then to compressor frequency carry out limit frequency, limiting
After frequency, leaving air temp can be increased, while energy consumption can also be reduced.
Step 13：Judge whether real-time indoor environment temperature is less than setting comfort temperature.If so, executing step 15；If
It is no, execute step 14.
The step can be carried out at the same time with step 12, be divided into two steps herein merely to clearly stating the reality
Apply the control process of example.After step 11 gets real-time indoor environment temperature, real-time indoor environment temperature and setting are relaxed
Thermophilic degree is made comparisons, and judges whether real-time indoor environment temperature is less than setting comfort temperature, to be executed according to comparison result
The control of step 14 or step 15.Wherein, one default setting temperature of air-conditioning, also may be used when setting comfort temperature can be manufacture
To be the set temperature voluntarily selected by user and be arranged.If it is by user's sets itself, air-conditioning can provide one
Reference temperature value, it is for reference.Such as, it is proposed that the comfort temperature is set as 27 DEG C.
Step 14：If step 13 judges that real-time indoor environment temperature not less than setting comfort temperature, executes as follows
First control：First frequency is selected, as target frequency, air-conditioning to be controlled according to target frequency with the smaller value in second frequency
Compressor operating.
If real-time indoor environment temperature shows that indoor temperature is higher at this time not less than setting comfort temperature, need quickly
Cooling.In this case, first frequency and second frequency that comparison step 12 obtains, select the smaller value in the two, as target
Frequency controls the compressor operating of air-conditioning according to target frequency.
Step 15：If step 13 judges that real-time indoor environment temperature is less than setting comfort temperature, following the is executed
Two controls：It obtains the real-time coil temperature of A/C evaporator and makes comparisons with setting coil pipe target temperature；If more than setting coil pipe
Target temperature selects first frequency with the smaller value in second frequency as target frequency；If no more than setting coil pipe target temperature
The current operation frequency of compressor is reduced and obtains third frequency by degree, is selected in first frequency, second frequency and third frequency
Smaller value is as target frequency；The compressor operating of air-conditioning is controlled according to target frequency.
If step 13 judges that indoor temperature is less than comfort temperature, to avoid the too fast decline of temperature from causing body-sensing uncomfortable,
Evaporator coil temperature is further considered, to adjust compressor operating frequency in time so that evaporator coil temperature can be steady
Surely coil pipe target temperature is arrived, to adjust air conditioning exhausting temperature, reaches cool without cold comfortable air-out effect.
Specifically, first, the real-time coil temperature and setting coil pipe target temperature for obtaining A/C evaporator, by real-time disk
Tube temperature degree is made comparisons with setting coil pipe target temperature, to judge whether real-time coil temperature is more than setting coil pipe target temperature.Its
In, the detection of evaporator coil temperature can be detected by the way that coil temperature sensor is arranged on an evaporator.Set coil pipe mesh
One default setting temperature of air-conditioning when mark temperature can be manufacture, naturally it is also possible to be one for voluntarily being selected by user and being arranged
A set temperature.If it is by user's sets itself, since user is for the concept of coil temperature and its performance indicator of representative
It is not very clear, a reference temperature value is preferably provided by air-conditioning, it is for reference selected.Such as, it is proposed that by the coil pipe target
Temperature is set as 14 DEG C.
If real-time coil temperature is more than setting coil pipe target temperature, show that air conditioning exhausting temperature will not be relatively low, thus, it will
The adjustment of room temperature adjusts main target as temperature, select smaller value in first frequency and second frequency as target frequency,
The compressor operating of air-conditioning is controlled according to target frequency.And if coil temperature shows at this time no more than setting coil pipe target in real time
Coil temperature is relatively low, and it is relatively low and send out cold wind to be easy to cause air conditioning exhausting temperature.To solve the problems, such as this, by the current fortune of compressor
Line frequency reduces and obtains third frequency.Then, select the smaller value in first frequency, second frequency and third frequency as mesh
Frequency is marked, the compressor operating of air-conditioning is controlled according to target frequency.
Frequency of air condition compressor is controlled using the above method, has considered temperature factor and heat source and air conditioning room
Distance factor between cooperation, realize the energy-saving run of air-conditioning and comfortable air-supply.In addition, in temperature factor to compressor frequency
Control in, according to indoor environment temperature with setting comfort temperature size, selection using room temperature PID control or using based on steam
Send out device coil temperature fuzzy control, can when room temperature is high in time, quickly cool down to room, reach refrigeration purpose, again
Coil temperature can be stablized in coil pipe target temperature so that air conditioning exhausting temperature pleasant reaches cool without cold comfortable
Refrigeration effect.
It should be noted that when fuzzy control during executing the second control, still constantly obtain indoor in real time
Environment temperature, and compare the size of itself and setting comfort temperature.Once real-time indoor environment temperature is not less than setting comfort temperature,
The second control process is then exited, the first control process is transferred to.
As preferred embodiment, prestored in the memory of air-conditioning master control borad there are one highest frequency is set, such as
Fruit step 14 judges that the smaller value in first frequency and second frequency is more than the first frequency of setting highest frequency or step 15 judgement
Smaller value in rate, second frequency and third frequency is more than setting highest frequency, then will set highest frequency as target frequency.
That is, either according to which FREQUENCY CONTROL compressor, ensure that the running frequency of compressor is no more than setting most high frequency
Rate.
Can also include following control processes for the second control as preferred embodiment：
If it is determined that real-time coil temperature is no more than setting coil pipe target temperature, then determines whether little for the first time after being switched on
In, and different processing is executed according to judging result.
Specifically, if coil temperature is not more than setting coil pipe target temperature, third frequency for the first time after air-conditioning booting in real time
Rate is setting refrigeration minimum frequency；If real-time coil temperature is non-after air-conditioning booting to be not more than setting coil pipe target temperature for the first time,
Third frequency is between current operation frequency and refrigeration minimum frequency.Wherein, refrigeration minimum frequency is that air conditioner refrigerating was run
The minimum frequency of setting in journey.Usually, which is the preceding parameter set of air-conditioning manufacture.
That is, if non-after coil temperature booting in real time be not more than setting coil pipe target temperature for the first time, compressor is read
Current operation frequency, then by third frequency be chosen to be between current operation frequency and refrigeration minimum frequency between a frequency
Rate value.
The purpose handled in this way is, if coil temperature is not more than setting coil pipe target temperature for the first time in real time, to avoid
The reduction of air conditioning exhausting temperature and cause outlet air be cold wind, first the frequency of compressor is construed as limiting so that coil temperature as early as possible on
Rise to setting coil pipe target temperature.And if coil temperature is non-in real time is not more than setting coil pipe target temperature for the first time, show
The fuzzy control of the second control process was executed, then coil temperature will not be less than very much setting coil pipe target temperature, at this point, third frequency
Rate is unnecessary near minimum, but between current operation frequency and refrigeration minimum frequency, to take into account the speed of room temperature adjusting.
The non-determination for being not more than third frequency when setting coil pipe target temperature for the first time after being switched on for real-time coil temperature, can
With with a variety of methods, it is preferred to use following methods：
Current operation frequency is reduced setting adjustment frequency by the current operation frequency for obtaining compressor every setting adjustment time
Rate, the frequency after reduction are third frequency.
Wherein, a pre-set frequency values before setting adjustment frequency as air-conditioning manufacture, or voluntarily set for user
A fixed frequency values, for example, being set as 5Hz.The frequency values are indicated as a frequency adjusting step every time to currently running
The reduction amplitude of frequency.Moreover, to frequency reduction using every setting adjustment time reduce it is primary by the way of, realize gradually adjust
Section.
Current operation frequency is reduced setting adjustment frequency as third frequency by embodiment more preferably every time
Afterwards, first judge the difference for setting coil pipe target temperature and real-time coil temperature whether not less than setting overshoot temperature value.If so,
Setting adjustment time continues to execute after reaching reduces setting adjustment frequency as the process of third mark frequency using current operation frequency；
Otherwise, keep third frequency constant.Wherein, overshoot temperature value is also the temperature value of a setting, for example, being set as 1 DEG C.
It is using the advantages of above-mentioned processing：If it is determined that the difference of setting coil pipe target temperature and real-time coil temperature is more than
Overshoot temperature value shows coil temperature far below setting coil pipe target temperature, it is still necessary to further frequency reducing.Moreover, as previously mentioned,
Down conversion process process, which is interval setting adjustment time, to be reduced once.Adjustment time is also a pre-set value, indicates frequency
The interval time of rate adjustment.For example, can be set as 2min.That is, after adjustment is primary, first using the frequency after adjusting as
Third frequency keeps third frequency constant when adjustment time is not up to.After adjustment time arrival, then reads compressor and work as
Preceding running frequency continues to carry out frequency reducing according to setting adjustment frequency based on current operation frequency.
And if the difference of step judgement setting coil pipe target temperature and real-time coil temperature is not more than overshoot temperature value, show
Though coil temperature, which does not reach also, sets coil pipe target temperature, and the difference of setting coil pipe target temperature is smaller, is not more than overshoot temperature
Angle value to avoid there is the overshoot of coil temperature, and influences room temperature governing speed at this point, then no longer reducing frequency.Thus, it protects
It is constant to hold third frequency.
Fig. 2 is referred to, the figure shows the structure diagrams of convertible frequency air-conditioner frequency control apparatus one embodiment of the present invention.
As shown in Fig. 2, the structural unit and its function that the convertible frequency air-conditioner frequency control apparatus of the embodiment is included are as follows：
Indoor environment temperature acquiring unit 201, for obtaining real-time indoor environment temperature.
Room temperature PID arithmetic element 202, the real-time indoor environment for calculating the acquisition of indoor environment temperature acquiring unit 201
The temperature difference between temperature and setting indoor target temperature carries out PID fortune as the real-time indoor temperature difference according to the real-time indoor temperature difference
It calculates, obtains and export first frequency.
Coil temperature acquiring unit 203, the real-time coil temperature for obtaining A/C evaporator.
Heat source is determining and distance acquiring unit 204, for indoor heat source where detecting air-conditioning in real time and determine heat source with
Real-time range between air-conditioning.
Second frequency acquiring unit 205, for according to the acquisition of the correspondence of known distance and frequency and real-time range
Corresponding frequency, as second frequency.
Control model selecting unit 206, for comparing the real-time indoor ring acquired in indoor environment temperature acquiring unit 201
Border temperature and setting comfort temperature, and comparison result is exported as control model selection signal.
First control unit 207, the comparison result for being exported in control model selecting unit 206 are real-time indoor environment
When temperature is not less than setting comfort temperature, the first frequency of 202 output of room temperature PID arithmetic element is selected to be obtained with second frequency single
Smaller value in the second frequency of 205 output of member controls the compressor operating of air-conditioning according to target frequency as target frequency.
Second control unit 208, the comparison result for being exported in control model selecting unit 206 are real-time indoor environment
When temperature is less than setting comfort temperature, real-time coil temperature is made comparisons with setting coil pipe target temperature.If real-time coil temperature
More than setting coil pipe target temperature, select first frequency with the smaller value in second frequency as target frequency, according to target frequency
Rate controls the compressor operating of air-conditioning；If real-time coil temperature is no more than setting coil pipe target temperature, by the current fortune of compressor
Line frequency, which reduces, obtains third frequency, selects smaller value in first frequency, second frequency and third frequency as target frequency,
The compressor operating of air-conditioning is controlled according to target frequency.
Heat source is determining and distance acquiring unit 204 may be used can detect heat source and determine the knot of distance in the prior art
Structure is realized.As preferred embodiment, heat source is determining and distance acquiring unit 204 is realized using following structures：
Including：
Infrared sensor is arranged in air-conditioning；
Rotating mechanism, for driving infrared sensor to rotate；
Heat source is determining and apart from subelement is obtained, for obtaining the temperature information in infrared sensor scanning range, according to
Temperature information obtains heat source temperature curve, according to heat source temperature curve determine indoor heat source where air-conditioning and heat source and air-conditioning it
Between real-time range.
Each structural unit in above-mentioned apparatus runs corresponding software program, and executes convertible frequency air-conditioner according to the flow of Fig. 1
FREQUENCY CONTROL realizes the energy saving comfortable operation of convertible frequency air-conditioner.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although with reference to aforementioned reality
Applying example, invention is explained in detail, for those of ordinary skill in the art, still can be to aforementioned implementation
Technical solution recorded in example is modified or equivalent replacement of some of the technical features；And these are changed or replace
It changes, the spirit and scope for claimed technical solution of the invention that it does not separate the essence of the corresponding technical solution.
Claims (9)
1. a kind of convertible frequency air-conditioner control method for frequency, which is characterized in that the method includes：
Air conditioner refrigerating is run, and is obtained real-time indoor environment temperature and setting indoor target temperature, is calculated the real-time indoor environment
The temperature difference between temperature and the setting indoor target temperature, as the real-time indoor temperature difference, according to the real-time indoor temperature difference into
Row room temperature PID operation obtains first frequency；In real time where detection air-conditioning between indoor heat source and the determining heat source and air-conditioning
Real-time range, corresponding with real-time range frequency is obtained according to the correspondence of known distance and frequency, as the
Two frequencies；
The real-time indoor environment temperature is made comparisons with setting comfort temperature；
If the real-time indoor environment temperature is not less than the setting comfort temperature, the first following control is executed：Described in selection
The compressor operating of first frequency and the smaller value control air-conditioning in the second frequency；
If the real-time indoor environment temperature is less than the setting comfort temperature, the second following control is executed：Air-conditioning is obtained to steam
The real-time coil temperature for sending out device makes comparisons the real-time coil temperature with setting coil pipe target temperature；If the real-time coil pipe
Temperature is more than the setting coil pipe target temperature, selects the first frequency with the smaller value in the second frequency as target
Frequency controls the compressor operating of air-conditioning according to the target frequency；If the real-time coil temperature is not more than the setting disk
The current operation frequency of compressor is reduced and obtains third frequency by pipe target temperature, selects the first frequency, second frequency
The compressor operating of smaller value control air-conditioning in rate and the third frequency.
2. according to the method described in claim 1, it is characterized in that, the correspondence of the distance and frequency closes for positive correlation
System.
3. according to the method described in claim 1, it is characterized in that, described in indoor heat source where the detection air-conditioning and determination
Real-time range between heat source and air-conditioning, specifically includes：
The infrared sensor controlled in air-conditioning carries out rotary scanning, the temperature information in scanning range is obtained, according to the temperature
Information acquisition heat source temperature curve；
The real-time range between the indoor heat source in air-conditioning place and the heat source and air-conditioning is determined according to the heat source temperature curve.
If 4. according to the method described in claim 1, it is characterized in that, the first frequency with it is smaller in the second frequency
Smaller value in value or the first frequency, the second frequency and the third frequency is more than setting highest frequency, then will
The setting highest frequency controls the compressor operating of air-conditioning according to the target frequency as the target frequency.
5. method according to claim 1 to 4, which is characterized in that if the real-time coil temperature is in air-conditioning
It is not more than the setting coil pipe target temperature after booting for the first time, the third frequency is setting refrigeration minimum frequency；If the reality
When coil temperature the air-conditioning booting after it is non-for the first time be not more than the setting coil pipe target temperature, the third frequency is between institute
It states between current operation frequency and the refrigeration minimum frequency.
6. if according to the method described in claim 5, it is characterized in that, the real-time coil temperature is non-after air-conditioning booting
It is not more than the setting coil pipe target temperature for the first time, the third frequency is determined using following methods：
The current operation frequency is reduced setting every setting adjustment time and adjusted by the current operation frequency for obtaining compressor
Whole frequency, the frequency after reduction are the third frequency.
7. according to the method described in claim 6, being adjusted it is characterized in that, the current operation frequency is reduced the setting every time
After whole frequency is as the third frequency, first judge that the setting coil pipe target temperature and the difference of the real-time coil temperature are
It is no to be not less than setting overshoot temperature value；If so, being continued to execute after setting adjustment time arrival by the current operation frequency
Rate reduces process of the setting adjustment frequency as the third frequency and otherwise keeps the third frequency constant.
8. a kind of convertible frequency air-conditioner frequency control apparatus, which is characterized in that described device includes：
Indoor environment temperature acquiring unit, for obtaining real-time indoor environment temperature；
Coil temperature acquiring unit, the real-time coil temperature for obtaining A/C evaporator；
Room temperature PID arithmetic element, for calculating the real-time indoor environment temperature and setting the temperature difference between indoor target temperature,
As the real-time indoor temperature difference, PID arithmetic is carried out according to the real-time indoor temperature difference, obtains and exports first frequency；
Heat source is determining and distance acquiring unit, indoor heat source where being used to detect air-conditioning in real time simultaneously determine the heat source and air-conditioning
Between real-time range；
Second frequency acquiring unit, it is corresponding with the real-time range for being obtained with the correspondence of frequency according to known distance
Frequency, as second frequency；
Control model selecting unit for the real-time indoor environment temperature and setting comfort temperature, and exports and compares knot
Fruit is as control model selection signal；
First control unit, the comparison result for being exported in the control model selecting unit are the real-time indoor environment temperature
When degree is not less than the setting comfort temperature, the first frequency and the smaller value control air-conditioning in the second frequency are selected
Compressor operating；
Second control unit, the comparison result for being exported in the control model selecting unit are the real-time indoor environment temperature
When degree is less than the setting comfort temperature, the real-time coil temperature is made comparisons with setting coil pipe target temperature；If the reality
When coil temperature be more than the setting coil pipe target temperature, select the smaller value work in the first frequency and the second frequency
For target frequency, the compressor operating of air-conditioning is controlled according to the target frequency；If the real-time coil temperature is no more than described
Coil pipe target temperature is set, the current operation frequency of compressor is reduced and obtains third frequency, selects the first frequency, described
The compressor operating of smaller value control air-conditioning in second frequency and the third frequency.
9. device according to claim 8, which is characterized in that the heat source is determining and distance acquiring unit includes：
Infrared sensor is arranged in air-conditioning；
Rotating mechanism, for driving the infrared sensor to rotate；
Heat source is determining and apart from subelement is obtained, for obtaining the temperature information in the infrared sensor scanning range, according to
The temperature information obtains heat source temperature curve, indoor heat source where determining air-conditioning according to the heat source temperature curve and described
Real-time range between heat source and air-conditioning.
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| CN113776157B (en) * | 2021-10-14 | 2022-10-18 | 宁波奥克斯电气股份有限公司 | Comfortable temperature regulation control method and device, air conditioner and storage medium |
| CN114811890A (en) * | 2022-02-28 | 2022-07-29 | 青岛海尔空调器有限总公司 | Method and device for controlling air conditioner, air conditioner and storage medium |
| CN114909787B (en) * | 2022-04-25 | 2023-10-20 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device and air conditioner |
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