CN106839257A - A kind of method for controlling air-conditioner - Google Patents
A kind of method for controlling air-conditioner Download PDFInfo
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- CN106839257A CN106839257A CN201611088253.4A CN201611088253A CN106839257A CN 106839257 A CN106839257 A CN 106839257A CN 201611088253 A CN201611088253 A CN 201611088253A CN 106839257 A CN106839257 A CN 106839257A
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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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- 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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
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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
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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
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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
- F24F2110/30—Velocity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Atmospheric Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of method for controlling air-conditioner, including：When the airconditioning control instruction for receiving comfortably is instructed for refrigerated energy-saving, when current indoor temperature is not less than setting indoor environment temperature threshold value, control convertible frequency air-conditioner is according to the original VFC mode operation of convertible frequency air-conditioner；Otherwise, the compressor target frequency gone out according to original VFC mode computation is obtained, judges compressor target frequency whether less than the first setting compressor frequency；If so, control compressor is run with the first setting compressor frequency, control outdoor fan is run with setting speed；If it is not, control compressor and outdoor fan are according to original VFC mode operation；In original VFC pattern, room temperature PID control is performed to compressor or the dual PID control of disk temperature PID control is included；Coil pipe target temperature employed in disk temperature PID control determines according to current indoor target temperature.Using the present invention, the energy-conservation and refrigeration comfortableness of air-conditioner are improve.
Description
Technical field
It is to be related to a kind of method for controlling air-conditioner specifically the invention belongs to air-conditioning technique field.
Background technology
Hot summer, room air can be freezed using convertible frequency air-conditioner, be that user builds a nice and cool ring
Border.But, convertible frequency air-conditioner power consumption is very big, often as the power consumption electrical equipment that family is main.
Cause uncomfortable problem to solve refrigeration blowing cold air, the coil temperature that can be based on indoor heat exchanger is made
The control method of compressor operating frequency is controlled for control targe.In existing coil temperature control process, coil pipe target temperature
Fixed value is used, a temperature fixed value in accumulator for air conditioner is generally solidificated in.In actual use, often
In the presence of a phenomenon：In the case of the indoor target temperature difference of user's setting, temperature is close to indoor target temperature indoors
When, user feels uncomfortable on the contrary.Through analysis, this phenomenon is because temperature indoors is close to being based on room during user's design temperature
Compressor operating frequency is controlled as control targe for the coil temperature of interior heat exchanger and coil pipe target temperature is drawn by fixed value
Rise.
Because the coil temperature of heat exchanger is to concern the key parameter that air conditioner coolant system and integrated air are adjusted, if control
System is improper, may bring air adjustment degradation, reduce the problem of comfortableness.Therefore, how to be carried out based on coil temperature
Rationally, comfortable control, at the same can also reducing energy consumption as much as possible, be the problem urgently studied and solve.
The content of the invention
It is comfortable with the energy saving and refrigeration that improve air-conditioner it is an object of the invention to provide a kind of method for controlling air-conditioner
Property.
For achieving the above object, the present invention is achieved using following technical proposals：
A kind of method for controlling air-conditioner, methods described includes：
When the airconditioning control instruction for receiving comfortably is instructed for refrigerated energy-saving, perform following refrigerated energy-savings and comfortably controlled
Journey：
Detection current indoor temperature, and made comparisons with setting indoor environment temperature threshold value；
If current indoor temperature is not less than the setting indoor environment temperature threshold value, control convertible frequency air-conditioner is former according to convertible frequency air-conditioner
There is VFC mode operation；
If current indoor temperature is obtained according to original VFC pattern less than the setting indoor environment temperature threshold value
Whether the compressor target frequency for calculating, judge the compressor target frequency less than the first setting compressor frequency；If so,
The compressor is controlled to be run with the described first setting compressor frequency, control outdoor fan is run with setting speed；If it is not, control
The compressor and the outdoor fan are made according to original VFC mode operation；
Original VFC pattern includes：
During refrigerating operaton, current indoor temperature is detected, calculated between current indoor temperature and the indoor target temperature of setting
The temperature difference, obtain the indoor temperature difference, room temperature PID computing is carried out according to the indoor temperature difference, obtain first object frequency；
And current indoor temperature is made comparisons with the comfort temperature of setting；
If current indoor temperature is not less than the comfort temperature, following room temperature PID controls are performed：
The compressor of convertible frequency air-conditioner according to the first object FREQUENCY CONTROL；
If current indoor temperature is less than the comfort temperature, following dual PID controls are performed：
The coil temperature of A/C evaporator is detected, the temperature difference between the coil temperature and coil pipe target temperature is calculated, disk is obtained
The pipe temperature difference, disk temperature PID arithmetic is carried out according to the coil pipe temperature difference, obtains the second target frequency；According to the first object frequency
The compressor is controlled with the smaller value in second target frequency；The coil pipe target temperature is according to the indoor objects temperature
Degree determines, and it is small to meet the indoor target temperature hour coil pipe target temperature.
Compared with prior art, advantages and positive effects of the present invention are：When present invention execution refrigerated energy-saving is comfortably controlled,
Detection indoor temperature, if indoor temperature is higher, according to original VFC Schema control convertible frequency air-conditioner so that indoor environment temperature
Degree rapid decrease, to reach the temperature of comfortableness；If indoor temperature is close to design temperature during low-frequency operation, to compressor
Minimum operating frequency is limited, and with certain refrigerating capacity while low energy consumption is realized, maintains the balance of indoor temperature,
Avoid fluctuations in indoor temperature big and cause user uncomfortable；Meanwhile, when compressor limit frequency runs, control outdoor fan is with fixation
Setting speed operation, reach the balance of refrigeration system, further stablize indoor temperature, improve indoor temperature comfortableness.And
And, by setting comfort temperature, according to indoor temperature and the size of comfort temperature, selection is using room temperature PID control or uses base
In the disk temperature PID control of evaporator coil temperature, room can be lowered the temperature in time, quickly when room temperature is high, reach refrigeration
Purpose, again can be by coil temperature stabilization in coil pipe target temperature so that air conditioning exhausting temperature pleasant, reaches cool without cold
Comfortable cooling effect；And, the coil pipe target temperature during disk temperature PID control determines according to indoor target temperature, room
Interior target temperature hour coil pipe target temperature is also small so that coil pipe target temperature is consistent with indoor target temperature, indoors
Cooling rate is fast when disk temperature PID control is performed in the case that target temperature requirement is low, is rapidly achieved required indoor low temperature
Balance, further improves user's comfortableness.
After specific embodiment of the invention is read in conjunction with the figure, the other features and advantages of the invention will become more clear
Chu.
Brief description of the drawings
Fig. 1 is the main flow chart of method one embodiment of present invention control air-conditioner；
Fig. 2 is second main flow chart of embodiment of method of present invention control air-conditioner；
Fig. 3 is a particular flow sheet of original VFC pattern in Fig. 1 and Fig. 2.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below with reference to drawings and Examples,
The present invention is described in further detail.
Fig. 1 is referred to, the figure show the main flow chart of method one embodiment of present invention control air-conditioner.
As shown in figure 1, the flow of method that the embodiment is controlled to air-conditioner comprises the following steps：
Step 101：Receive airconditioning control instruction.
Step 102：Judge whether the control refrigeration that step 101 is received is refrigerated energy-saving comfortable cooling.If it has not, performing
Step 103；Otherwise, step 104 is performed.
User can be input into airconditioning control and instruct by convertible frequency air-conditioner control panel, it is also possible to by convertible frequency air-conditioner remote control
Input airconditioning control instruction, can also by convertible frequency air-conditioner control of intelligent terminal, be such as provided with convertible frequency air-conditioner control APP intelligence
Mobile phone input airconditioning control instruction.No matter which kind of command input device used, refrigerated energy-saving is provided with the input and is relaxed
The special specified button of suitable refrigeration.User presses the button, it is possible to triggers convertible frequency air-conditioner and comfortably runs mould into refrigerated energy-saving
Formula, realizes not only energy-conservation but also the comfortable refrigeration control of temperature adjustment.Thus, user is facilitated independently to choose whether to perform the comfortable mould of refrigerated energy-saving
Formula.If convertible frequency air-conditioner has received control button and has pressed, and judge be button corresponding to refrigerated energy-saving comfortable cooling by by
Under, representing that user input refrigerated energy-saving is comfortably instructed, then the refrigerated energy-saving for starting into step 104 is comfortably instructed.
Step 103：If step 102 judges that received airconditioning control instruction is not that refrigerated energy-saving is comfortably instructed,
According to original VFC Schema control convertible frequency air-conditioner.Then, step 101 is gone to, the instruction of reception airconditioning control is kept simultaneously
Judged.
Original VFC pattern refers to the control model that convertible frequency air-conditioner has before refrigerated energy-saving comfort mode is set up.
Original VFC pattern not only includes the process according to FREQUENCY CONTROL compressor operating, also including according to user's wind speed setting control
Indoor fan processed and outdoor fan run, aperture of electric expansion valve, etc. are controlled according to the degree of superheat.And, original frequency conversion control
The process being controlled to compressor frequency in molding formula preferably realized using Fig. 3 flows, refers to the follow-up description to Fig. 3.
Step 104：If step 102 judges that received airconditioning control instruction is that refrigerated energy-saving is comfortably instructed, enter
The comfortable control model of refrigerated energy-saving.First, current indoor temperature is detected, is made comparisons with setting indoor environment temperature threshold value.
Setting indoor environment temperature threshold value is had been written into the memory of air-conditioner controller when convertible frequency air-conditioner dispatches from the factory.One
As, the setting indoor environment temperature threshold value is for a user not modifiable, because user is difficult to know the threshold value
Implication and function, if arbitrarily changed by user, can increase energy consumption, reduce refrigeration comfortableness on the contrary.The threshold value can be by after sale
Personnel or other professionals are operated by upgrading to air-conditioner controller etc. and carry out numerical value modification.And, setting interior ring
Border temperature threshold is that most people body-sensing is more comfortable, will not feel a too hot temperature value, for example, be set as 28 DEG C.Currently
Indoor temperature refers to a real time temperature at convertible frequency air-conditioner local environment space current time, can be by being arranged on air-conditioning air intake
Temperature sensor detection at mouthful.Into the comfortable control model of refrigerated energy-saving, detect current indoor temperature, and with the indoor ring of setting
Border temperature threshold makees the comparing of size.
Step 105：Judge current indoor temperature whether less than setting indoor environment temperature threshold value.If so, performing step
106；Otherwise, step 103 is performed.
If current indoor temperature shows that indoor environment temperature is higher not less than setting indoor environment temperature threshold value, then hold
Row step 103, according to original VFC Schema control convertible frequency air-conditioner, to enable indoor temperature rapid decrease.And,
During according to original VFC Schema control convertible frequency air-conditioner, step 104 is gone to, persistently detect current indoor temperature, and
Made comparisons with setting indoor environment temperature threshold value.
Step 106：If current indoor environment temperature shows indoor environment temperature less than setting indoor environment temperature threshold value
It is low, may be close to design temperature.And, when close to design temperature, compressor will low-frequency operation.Now, basis is obtained
The compressor target frequency that original VFC mode computation goes out.
Step 107：Judge the compressor target frequency acquired in step 106 whether less than the first setting compressor frequency.
If so, performing step 108；If it is not, showing that user's design temperature is relatively low, current indoor temperature remains above user's design temperature, needs
Further to lower the temperature, thus, step 103 is gone to, according to original VFC Schema control convertible frequency air-conditioner, to cause indoor temperature
Being capable of rapid decrease.And, during according to original VFC Schema control convertible frequency air-conditioner, step 104 is gone to, continue
Detection current indoor temperature, and made comparisons with setting indoor environment temperature threshold value.
Step 108：If the compressor target frequency acquired in step 106 is less than the first setting compressor frequency, control
Compressor is run with the first setting compressor frequency, meanwhile, control outdoor fan is run with setting speed.
When the compressor target frequency for actually calculating is less than the first setting compressor frequency, control compressor carries out low
Frequency limit frequency, makes its compressor low-limit frequency be the first setting compressor frequency, rather than according to the compressor mesh for actually calculating
Mark frequency operation.
Wherein, the first setting compressor frequency is that to be dispatched from the factory in convertible frequency air-conditioner be the memory that has been written into air-conditioner controller
An interior fixed frequency, and the frequency is obtained by theoretical research and a large amount of comprehensive experiments by research staff
Value, is the reasonable frequency value that can take into account low energy consumption and refrigeration comfortableness.For example, this first sets compressor frequency as 15Hz.
When the compressor target frequency gone out according to original VFC mode computation is less than 15Hz, show that real-time indoor environment temperature connects
Nearly user's design temperature, without more refrigerating capacity.But, if what control compressor ran according to the frequency less than 15Hz
Words, due to underfrequency, its refrigerating capacity is extremely weak, or even can not play any refrigeration.Now, although compressor is low frequency
Operation, still consumes certain electricity, and its refrigerating capacity is extremely weak, so as to cause compressor running to be now almost one
Pure power consumption and do not have the process of refrigeration, from the point of view of Energy Efficiency Ratio angle, power consumption is big.Moreover, due to compression mechanism
Cold energy power is extremely weak, it is impossible to maintain the stabilization of indoor temperature so that fluctuations in indoor temperature is big, and temperature influences comfortableness after rising.And
Temperature is lowered the temperature after rising, it is necessary to control compressor to operate in a high frequency again, therefore, from the point of view of whole process of refrigerastion, power consumption
Greatly.
And in this embodiment, when the compressor target frequency for actually calculating is less than the first setting compressor frequency,
Control compressor carries out low frequency limit frequency.Compressor runs under the first setting compressor frequency, can produce maintenance Indoor Temperature
Spend the refrigerating capacity of stabilization so that indoor temperature stabilization improves comfortableness in user's design temperature.It is additionally, since indoor temperature steady
Fixed, the cycle that compressor is operated in a high frequency again lengthens.Thus, from Energy Efficiency Ratio, the compressor consumption in whole process of refrigerastion
Electricity is small, so as to reduce the energy consumption of air conditioner refrigerating.
And, in the limit frequency running, control outdoor fan is run with fixed setting speed, rather than according to original
There is VFC mode operation, the balance of whole refrigeration system can be kept when compressor limits frequency, further stablize Indoor Temperature
Degree, improves the comfortableness of indoor temperature.Likewise, setting speed is that to be dispatched from the factory in convertible frequency air-conditioner be to have been written into air-conditioner controller
Memory in a fixed value, and the value is obtained by theoretical research and a large amount of comprehensive experiments by research staff
Individual value.
During step 108 is performed, detection and the decision process of step 104 are still continuously carried out.
In a word, in refrigerating of convertible frequency air conditioner running, step 101, step 102, step 104, step 105 are constantly performed
And detection and the decision process of step 107, the control which condition is put into which condition is met, when certain condition is unsatisfactory for
Just exit corresponding control.
Fig. 2 is referred to, the figure show second flow chart of embodiment of method of present invention control convertible frequency air-conditioner.At this
In embodiment, the compressor of convertible frequency air-conditioner is the compressor of changeable frequency, and the restriction in the refrigerating of convertible frequency air conditioner circulatory system
Part is the controllable electric expansion valve of aperture.
As shown in Fig. 2 the flow of method that the embodiment is controlled to convertible frequency air-conditioner comprises the following steps：
Step 201：Receive airconditioning control instruction.
Step 202：Judge whether the control refrigeration that step 201 is received is refrigerated energy-saving comfortable cooling.If it has not, performing
Step 203；Otherwise, step 204 is performed.
Step 203：If step 202 judges that received airconditioning control instruction is not that refrigerated energy-saving is comfortably instructed,
According to original VFC Schema control convertible frequency air-conditioner.Then, step 201 is gone to, the instruction of reception airconditioning control is kept simultaneously
Judged.
Step 204：If step 202 judges that received airconditioning control instruction is that refrigerated energy-saving is comfortably instructed, enter
The comfortable control model of refrigerated energy-saving.First, current indoor temperature is detected, is made comparisons with setting indoor environment temperature threshold value.
Step 205：Judge current indoor environment temperature whether less than setting indoor environment temperature threshold value.If so, performing step
Rapid 206；Otherwise, step 203 is performed.
Step 206：If current indoor environment temperature is obtained according to original frequency conversion less than setting indoor environment temperature threshold value
The compressor target frequency that control model is calculated.
Step 207：Judge the compressor target frequency acquired in step 206 whether less than the first setting compressor frequency.
If so, performing step 209；Otherwise, step 208 is performed.
Step 208：If step 206 judges compressor target frequency not less than the first setting compressor frequency, then judges
Whether compressor target frequency is less than the second setting compressor frequency.If so, performing step 210；Otherwise, step 203 is gone to, still
Continuously carry out detection and the decision process of step 204.
Step 209：If the compressor target frequency acquired in step 206 is less than the first setting compressor frequency, control
Compressor is run with the first setting compressor frequency, meanwhile, control outdoor fan is run with setting speed.Then, step is performed
210。
Above-mentioned steps 201 implement process, principle and purpose and Fig. 1 embodiments to step 207 and step 209
Correspondence step is similar to, and is no longer specifically described, and details refer to the description of Fig. 1.
By step 209, from unlike Fig. 1 embodiments, Fig. 2 embodiments increased step 208 by compressor target
The process that frequency is made comparisons with the second setting compressor frequency.Wherein, the second setting compressor frequency is than the first setting compressor
Frequency is big, for example, first sets compressor frequency as 15Hz, then second sets compressor frequency as 20Hz.And, set with first
Determine compressor frequency similar, the second setting compressor frequency is also that to be dispatched from the factory in convertible frequency air-conditioner be to have been written into airconditioning control
A fixed frequency in the memory of device, and the frequency is obtained by theoretical research and a large amount of comprehensive experiments by research staff
The value for obtaining, is the reasonable frequency value that can take into account low energy consumption and refrigeration comfortableness.
Step 210：The step is transferred by step 208 and step 209, as long as that is, step 206 is according to original VFC
The compressor target frequency that mode computation goes out then controls the electric expansion valve of convertible frequency air-conditioner less than the second setting compressor frequency
Aperture is setting aperture.
Wherein, setting aperture be convertible frequency air-conditioner dispatch from the factory be have been written into one in the memory of air-conditioner controller it is solid
Definite value, and the value is the value obtained by theoretical research and a large amount of comprehensive experiments by research staff.For example, being set first
Determine compressor frequency for 15Hz, second set compressor frequency as 20Hz when, set aperture as 100 steps.According to original frequency conversion
When the compressor target frequency that control model is calculated is less than the second setting compressor frequency, not according still further to original VFC mould
Formula is controlled to the aperture of electric expansion valve, but the aperture of control electric expansion valve is fixed.And, it is small in compressor frequency
When the second setting compressor frequency, the setting aperture is smaller than the aperture calculated according to original VFC pattern,
Because original control mode is the degree of superheat adjusts valve, refrigeration effect can not be more preferably realized by controlling valve opening at low frequency
Really.And it is fixed aperture that the embodiment controls electric expansion valve in compressor low-frequency operation, suitable refrigerating capacity is obtained in that
And cause air conditioning exhausting proper temperature.
Step 211：Judge whether compressor is reached with the actual motion frequency operation less than the second setting compressor frequency
First setting time.If so, performing step 212；Otherwise, timing is continued, until reaching the first setting time.
Step 212：If compressor is run to up to first with the actual motion frequency less than the second setting compressor frequency
Setting time, controls the actual motion frequency of compressor to rise to the 3rd setting compressor frequency, and continuous service second sets
Time.
Step 213：When compressor is run to up to the second setting time according to the 3rd setting compressor frequency, then return to
The frequency operation of the reason for before rising.
Perform above-mentioned steps 211 to the purpose of step 213 be in order to compressor low frequency and continuous operating carry out protection control,
Avoid compressor long-time low-frequency operation and damage compressor.Wherein, the first setting time, the second setting time and the 3rd setting
Compressor frequency is that to be dispatched from the factory in convertible frequency air-conditioner be to have been written into a fixed value in the memory of air-conditioner controller, and should
Value is the value obtained by theoretical research and a large amount of comprehensive experiments by research staff.For example, the first setting time is
30min, the second setting time is 10s, and the 3rd sets compressor frequency as 30Hz.When compressor is with less than the second setting compressor
After the actual motion frequency of frequency 20Hz continuously runs 30min, the running frequency of compressor is forced to rise to 30Hz, and continue fortune
Row 10s.Then, then the original frequency to rising is recovered.
Perform above-mentioned compressor limit frequency and low-frequency operation protect during, still continuously carry out step 204 detection and
Decision process.
Certainly, in refrigerating of convertible frequency air conditioner running, step 201, step 202, step 204, step still can constantly be performed
Rapid 205, detection and the decision process of step 207 and step 208, meets the control which condition is put into which condition, not
Corresponding control is just exited when meeting certain condition.
Either Fig. 1 embodiments or Fig. 2 embodiments, when the comfortable control process of refrigerated energy-saving is entered, with existing frequency conversion
Airconditioning control is similar, it is necessary to pre-set airconditioning control parameter, such as user's design temperature, wind speed setting, air supply direction
Deng the comfortable control process of refrigerated energy-saving will be according to these airconditioning control Parameters on Compressive machine, indoor fan, outdoor fan, wind-guidings
Plate etc. is controlled, and meets user's request.Refrigerated energy-saving is comfortably controlled as an optimal control process, for a specific
, there is matching for an optimal control parameter and control performance in convertible frequency air-conditioner.In order to provide Optimal Control performance, go out in air-conditioning
Before factory, the optimization control parameter for realizing optimum control performance of this air-conditioning, the optimization control parameter are prefixed in its storage
Airconditioning control parameter by default, in user using air-conditioning and when have selected the comfortable control model of refrigerated energy-saving, in airconditioning control
Acquiescence airconditioning control parameter is shown on panel or air cnoditioner remote controller display screen, optimal control parameter and control is understood for user
Benchmark processed.
But, to meet the individual demand of user, acquiescence airconditioning control parameter is not modifiable, and user can be with
The default control parameters that will be shown reset according to self-demand as reference data to control parameter.
Now, receive airconditioning control refrigeration for refrigerated energy-saving comfortable cooling and show acquiescence airconditioning control parameter it
Afterwards, if detecting the airconditioning control parameter for resetting within the setting setting time, according to the air-conditioning control for resetting
Parameter processed performs the comfortable control process of refrigerated energy-saving.And if being not detected by the air-conditioning for resetting within the setting setting time
Control parameter, then will perform the comfortable control process of refrigerated energy-saving according to airconditioning control parameter of submerging.
Fig. 3 is referred to, the figure show one particular flow sheet of original VFC pattern in Fig. 1 and Fig. 2.
Specifically, in original VFC pattern, the method flow of the one embodiment being controlled to air-conditioner
Comprise the following steps：
Step 301：Refrigerating operaton, detects indoor temperature, and room temperature PID computing is carried out according to the indoor temperature difference, obtains first object frequently
Rate.
Specifically, when VFC is started shooting and performs refrigerating operaton, the Indoor Temperature in room residing for detection convertible frequency air-conditioner
Degree.The detection of the indoor temperature is realized using prior art.For example, by being arranged on air-conditioning air inlet or being close to air-conditioning air intake
Temperature sensor detection EAT at mouthful, as indoor temperature.
Then, the temperature difference between indoor temperature and the indoor target temperature of setting is calculated, using the temperature difference as the indoor temperature difference.
Wherein, indoor target temperature refers to user's setting, the indoor target temperature for being reached of expectation.
Subsequently, room temperature PID computing is carried out according to the indoor temperature difference, obtains the target frequency being controlled to compressor, and
The target frequency is defined as first object frequency.Wherein, room temperature PID computing carried out according to the indoor temperature difference, obtained to compressor
The specific method of the target frequency being controlled can be realized using prior art, not be elaborated herein and limit.
Step 302：Judge indoor temperature whether less than comfort temperature.If so, performing the dual PID control of step 304；It is no
Then, the room temperature PID control of step 303 is performed.
The step 302 can simultaneously be carried out with step 301, and two steps are divided into herein merely to clearly stating
The control process of the embodiment.After step 301 detects indoor temperature, indoor temperature is made to compare with the comfort temperature of setting
Compared with, and judge indoor temperature whether less than comfort temperature.Wherein, comfort temperature can be an acquiescence of convertible frequency air-conditioner when dispatching from the factory
Design temperature, or the design temperature voluntarily selected by user and set.If by user's sets itself, frequency conversion
Air-conditioning can provide a reference temperature value, for reference.For example, it is proposed that the comfort temperature is set as 27 DEG C.
Step 303：If indoor temperature is not less than comfort temperature, room temperature PID control is performed, according to first object frequency control
Compressor processed.
If step 302 judges that indoor temperature is not less than comfort temperature, show that now indoor temperature is higher, then perform room temperature
PID control, according to first object FREQUENCY CONTROL compressor so that indoor temperature fast cooling to indoor target temperature.
Step 304：If indoor temperature is less than comfort temperature, dual PID control is performed.
If step 302 judges that indoor temperature is less than comfort temperature, to avoid the too fast decline of temperature from causing body-sensing uncomfortable,
Dual PID control is performed, to adjust compressor operating frequency in time so that evaporator coil temperature can be stabilized to coil pipe mesh
Mark temperature, to adjust air conditioning exhausting temperature, reaches cool without cold comfortable air-out effect.The process ginseng of specific dual PID control
See below the description of step 305 and step 306.
Step 305：The coil temperature of evaporator is detected, disk temperature PID arithmetic is carried out according to the coil pipe temperature difference, obtain the second target
Frequency.
The detection of the coil temperature of evaporator can be detected by setting temperature sensor on evaporator coil.Detection
Go out after coil temperature, the temperature difference between coil temperature and coil pipe target temperature is calculated, using the temperature difference as the coil pipe temperature difference.Its
In, coil pipe target temperature determines according to indoor target temperature, and it is also small to meet indoor target temperature hour coil pipe target temperature.So
Afterwards, disk temperature PID arithmetic is carried out according to the coil pipe temperature difference, the target frequency that acquisition is controlled to compressor, and by the target frequency
It is defined as the second target frequency.The method that disk temperature PID arithmetic obtains the target frequency being controlled to compressor may be referred to now
The method for having the room temperature PID computing in technology and obtaining compressor target frequency.Wherein, the original frequency of disk temperature PID arithmetic can
Think an original frequency for setting.Preferably, the original frequency of disk temperature PID arithmetic is that step 12 judges indoor temperature less than easypro
The current operation frequency of compressor when thermophilic degree, execution dual PID control.And, the current operation frequency is at least in compression
Machine operation a period of time（Such as 3min）A running frequency afterwards.
Step 306：In the second target frequency that the first object frequency calculated according to step 301 is calculated with step 305
Smaller value controls compressor.
When temperature is less than comfort temperature indoors, disk temperature PID arithmetic is performed according to coil temperature and coil pipe target temperature, and
Smaller value control in the second target frequency that the first object frequency level disk temperature PID arithmetic exported according to room temperature PID computing is exported
Compressor operating processed, coil temperature is checked and regulated while refrigeration cool-down so that coil temperature can be approached to coil pipe target temperature.
Refrigeration control is carried out to convertible frequency air-conditioner using said process, when temperature is higher indoors, controls to press using room temperature PID
Contracting machine runs so that indoor temperature fast cooling simultaneously approaches indoor target temperature.When temperature is less than comfort temperature indoors, use
Room temperature PID controls the dual PID control with disk temperature PID control：When disk temperature PID control is had just enter into, disk temperature PID control rises main
Act on, preferentially rise to coil temperature while cooling and approach coil pipe target temperature；And in coil temperature close to coil pipe mesh
During mark temperature, room temperature PID plays a major role so that the stable target temperature indoors of indoor temperature, it is to avoid led because of room temperature overshoot
Air-conditioning is caused to shut down the generation of phenomenon.So that during whole refrigeration control, indoor target temperature is approached indoor temperature is caused
On the basis of cause coil temperature approach coil pipe target temperature, both met room temperature regulation, the comfortableness of air conditioning exhausting is realized again, reach
It is cool without cold refrigeration to going out.And, the coil pipe target temperature during disk temperature PID control is according to indoor target temperature
To determine, indoor target temperature hour coil pipe target temperature is also small so that coil pipe target temperature keeps one with indoor target temperature
Cause, cooling rate is fast when performing disk temperature PID control in the case that target temperature requirement indoors is low, is rapidly achieved required room
The balance of interior low temperature, further improves user's comfortableness.
Used as preferred embodiment, coil pipe target temperature determines according to indoor target temperature, specifically includes：
Obtain indoor recommendation target temperature and coil pipe recommends target temperature；
The difference of indoor recommendation target temperature and indoor target temperature is calculated, as the first difference；
Second difference is obtained according to the differences of the second difference of formula=a* first；A is no more than 1 positive number；
The difference that coil pipe recommends target temperature and the second difference is calculated, result of calculation is defined as performing the actual disk of disk temperature PID arithmetic
Pipe target temperature.
Wherein, indoor recommendation target temperature is a temperature that is known, prestoring, is research staff's warp usually
It is that a large amount of theoretical researches and experiment test are obtained, take into account human body comfort and a temperature of air conditioner energy saving, be 27 for example
℃.It is also a temperature that is known, prestoring that coil pipe recommends target temperature, is a large amount of theoretical research staff's warp usually
Research and experiment test obtained, indoors recommend target temperature as actual set indoor target temperature when can send out
One coil temperature of the heat exchange air of proper temperature, is 14 DEG C for example.Certainly, the indoor recommendation target temperature and the disk
Pipe recommendation target temperature can also be changed by mandate, for example, be entered by special instruction in user family by personnel after sale
Row modification.A is also known, prestores as a coefficient according to first the second difference of mathematic interpolation, its value, is
Research staff is obtained through a large amount of theoretical researches and experiment test.Preferably, a is the positive number less than 1, and for example, a values are
0.5.So, in the case that target temperature is recommended indoors is 27 DEG C, indoor recommendation coil pipe target temperature is 14 DEG C, a is 0.5,
If actual indoor target temperature is 26 DEG C, actual coil pipe target temperature is 13.5 DEG C；If indoor target temperature is 25 DEG C,
Then actual coil pipe target temperature is 13 DEG C.
Adopt with the aforedescribed process, when coil pipe target temperature is determined according to indoor target temperature, if indoor target temperature
Less than indoor recommendation target temperature, show that current desired indoor temperature is low, indoor recommendation target temperature and indoor objects temperature
The first difference between degree is negative value, is also negative value according to the first mathematic interpolation the second difference out；So, it is poor according to second
The actual coil pipe target temperature that value and coil pipe recommendation target temperature are calculated will recommend target temperature less than coil pipe.So,
When then performing disk temperature PID arithmetic according to actual coil pipe target temperature, because coil pipe target temperature is small, compressor operating frequency is big,
Cooling rate is fast, so that indoor temperature can rapidly reach required relatively low indoor temperature, meets to low
The comfortableness of the user of warm demand.And, indoor target temperature is lower, and the coil pipe target temperature for being obtained is also lower so that disk
The speed and cooling demand of warm PID control process are consistent with room temperature PID control, further increase the comfortableness of user.
And, during dual PID control is performed, still constantly real-time detection indoor temperature, and it is relatively more indoor
The size of temperature and comfort temperature.Once indoor temperature is not less than comfort temperature, then dual PID control process is exited, be transferred to
Room temperature PID control process, to cause indoor temperature temperature in the indoor target temperature of setting.
Used as preferred embodiment, temperature is not less than comfort temperature and the difference of indoor temperature and comfort temperature indoors
During more than the difference for setting, then dual PID control process is exited, be transferred to room temperature PID control process.Set by reasonable selection
Difference, for example, being set as 1 DEG C, it can be ensured that coil temperature is not less than coil pipe target temperature, it is ensured that go out cool to be relaxed without cold
Adaptive.
And, in the air conditioner refrigerating operation control process of the embodiment, if the non-wind speed setting of user, controls air-conditioning
Blower fan runs according to highest wind velocity, because under same refrigerating capacity, the leaving air temp of high wind speed is higher than the air-out of low wind speed
Temperature, further ensures that leaving air temp will not be too low.And if detect user setting wind speed, control blower fan according to setting
Wind speed runs.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than is limited；Although with reference to foregoing reality
Example is applied to be described in detail the present invention, for the person of ordinary skill of the art, still can be to foregoing implementation
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 spirit and scope of the essence disengaging claimed technical solution of the invention of appropriate technical solution.
Claims (10)
1. it is a kind of control air-conditioner method, it is characterised in that methods described includes：
When the airconditioning control instruction for receiving comfortably is instructed for refrigerated energy-saving, perform following refrigerated energy-savings and comfortably controlled
Journey：
Detection current indoor temperature, and made comparisons with setting indoor environment temperature threshold value；
If current indoor temperature is not less than the setting indoor environment temperature threshold value, control convertible frequency air-conditioner is former according to convertible frequency air-conditioner
There is VFC mode operation；
If current indoor temperature is obtained according to original VFC pattern less than the setting indoor environment temperature threshold value
Whether the compressor target frequency for calculating, judge the compressor target frequency less than the first setting compressor frequency；If so,
The compressor is controlled to be run with the described first setting compressor frequency, control outdoor fan is run with setting speed；If it is not, control
The compressor and the outdoor fan are made according to original VFC mode operation；
Original VFC pattern includes：
During refrigerating operaton, current indoor temperature is detected, calculated between current indoor temperature and the indoor target temperature of setting
The temperature difference, obtain the indoor temperature difference, room temperature PID computing is carried out according to the indoor temperature difference, obtain first object frequency；
And current indoor temperature is made comparisons with the comfort temperature of setting；
If current indoor temperature is not less than the comfort temperature, following room temperature PID controls are performed：
The compressor of convertible frequency air-conditioner according to the first object FREQUENCY CONTROL；
If current indoor temperature is less than the comfort temperature, following dual PID controls are performed：
The coil temperature of A/C evaporator is detected, the temperature difference between the coil temperature and coil pipe target temperature is calculated, disk is obtained
The pipe temperature difference, disk temperature PID arithmetic is carried out according to the coil pipe temperature difference, obtains the second target frequency；According to the first object frequency
The compressor is controlled with the smaller value in second target frequency；The coil pipe target temperature is according to the current indoor mesh
Mark temperature determines, and it is small to meet the current indoor target temperature hour coil pipe target temperature.
2. method according to claim 1, it is characterised in that the coil pipe target temperature is according to the current indoor target
Temperature determines, specifically includes：
Obtain indoor recommendation target temperature and coil pipe recommends target temperature；
The difference of the indoor recommendation target temperature and the current indoor target temperature is calculated, as the first difference；
Second difference is obtained according to the differences of the second difference of formula=a* first；A is no more than 1 positive number；
The difference that the coil pipe recommends target temperature and second difference is calculated, result of calculation is defined as performing the disk temperature PID
The actual coil pipe target temperature of computing.
3. method according to claim 1, it is characterised in that when the dual PID control is performed, in real-time detection room
Temperature, and the indoor temperature of real-time detection is made comparisons with the comfort temperature, it is not less than institute in the indoor temperature of real-time detection
When stating comfort temperature, the dual PID control is exited, perform the room temperature PID control.
4. method according to claim 3, it is characterised in that when the dual PID control is performed, in real-time detection room
Temperature, and the indoor temperature of real-time detection is made comparisons with the comfort temperature, it is not less than institute in the indoor temperature of real-time detection
When stating the difference of comfort temperature and the indoor temperature of real-time detection and the comfort temperature more than the difference for setting, exit described double
Weight PID control, performs the room temperature PID control.
5. method according to claim 1, it is characterised in that when the dual PID control is performed, obtains the compression
The current operation frequency of machine, using the current operation frequency as the disk temperature PID arithmetic original frequency, and according to the disk
The pipe temperature difference carries out the disk temperature PID arithmetic.
6. method according to claim 1, it is characterised in that in original VFC pattern, if detecting use
The wind speed of family setting, then control the outdoor fan to be run according to the wind speed of the setting；Otherwise, the outdoor fan is controlled to press
According to highest wind velocity operation.
7. method according to any one of claim 1 to 6, it is characterised in that comfortably controlled in the refrigerated energy-saving
Cheng Zhong, if current indoor temperature less than it is described setting indoor environment temperature threshold value, and the compressor actual motion frequency
Less than the second setting compressor frequency, the aperture of the electric expansion valve of air-conditioning is controlled to be fixed as setting aperture, otherwise, according to described
The aperture of electronic valve described in original VFC Schema control；The second setting compressor frequency is more than the described first setting pressure
Contracting unit frequency.
8. method according to claim 7, it is characterised in that in the comfortable control process of the refrigerated energy-saving, if worked as
Preceding indoor temperature is less than the setting indoor environment temperature threshold value, and the compressor is with less than the described second setting compressor frequently
The actual motion frequency of rate has run the first setting time, controls the actual motion frequency of the compressor to rise to the 3rd setting
Compressor frequency and the setting time of continuous service second, then control compressor to be run with the original frequency before frequency rising.
9. method according to any one of claim 1 to 6, it is characterised in that be in the airconditioning control instruction for receiving
When refrigerated energy-saving is comfortably instructed, the acquiescence airconditioning control parameter that display refrigerated energy-saving is comfortably controlled；If within the setting setting time
The airconditioning control parameter for resetting is not detected by, it is comfortable to perform the refrigerated energy-saving according to the acquiescence airconditioning control parameter
Control process；If detecting the airconditioning control parameter for resetting within the setting setting time, reset according to described
Airconditioning control parameter perform the comfortable control process of refrigerated energy-saving.
10. method according to any one of claim 1 to 6, it is characterised in that comfortably instruction passes through the refrigerated energy-saving
The specified button being arranged on convertible frequency air-conditioner control panel or convertible frequency air-conditioner remote control or convertible frequency air-conditioner control of intelligent terminal sends.
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| CN111649442A (en) * | 2020-06-15 | 2020-09-11 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device, air conditioner and storage medium |
| CN114087744A (en) * | 2020-07-29 | 2022-02-25 | 广东美的制冷设备有限公司 | Air conditioner, air conditioner control method and device and readable storage medium |
| CN114087745A (en) * | 2020-07-29 | 2022-02-25 | 广东美的制冷设备有限公司 | Air conditioner, air conditioner control method and device and readable storage medium |
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