CN106679071A - Method and device for realizing refrigeration control of air conditioner - Google Patents

Method and device for realizing refrigeration control of air conditioner Download PDF

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Publication number
CN106679071A
CN106679071A CN201611087689.1A CN201611087689A CN106679071A CN 106679071 A CN106679071 A CN 106679071A CN 201611087689 A CN201611087689 A CN 201611087689A CN 106679071 A CN106679071 A CN 106679071A
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CN
China
Prior art keywords
temperature
frequency
real
time
indoor
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CN201611087689.1A
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Chinese (zh)
Inventor
刘聚科
吕兴宇
王荟桦
许国景
程永甫
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Qingdao Haier Air Conditioner Gen Corp Ltd
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Qingdao Haier Air Conditioner Gen Corp Ltd
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Priority to CN201611087689.1A priority Critical patent/CN106679071A/en
Publication of CN106679071A publication Critical patent/CN106679071A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/50Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56Remote control
    • F24F11/58Remote control using Internet communication
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data

Abstract

The invention discloses a method and device for realizing refrigeration control of an air conditioner. The method comprises the steps that refrigeration operation of the air conditioner is conducted, indoor temperature PID operation is conducted, and a first frequency is obtained; a real-time distance between a target at indoor space where the air conditioner is located and the air conditioner is obtained, a real-time air speed corresponding to the real-time distance and a frequency corresponding to the real-time air speed are obtained, and the frequency serves as a second frequency; coil pipe temperature PID operation is conducted according to a temperature difference of a real-time coil pipe temperature and a coil pipe target temperature, a third frequency is obtained; the coil pipe target temperature is determined according to an indoor target temperature, and the situation that when the indoor target temperature is small, the coil pipe target temperature is small is met; if a real-time indoor environment temperature is not less than a set comfortable temperature, the smaller value between the first frequency and the second frequency is selected to serve as a target frequency; and if the real-time indoor environment temperature is less than the set comfortable temperature, the smaller value among the first frequency, the second frequency and the third frequency is selected to serve as the target frequency. By adoption of the method, energy saving and comfortable control of the air conditioner can be realized.

Description

The method and apparatus for realizing air conditioner refrigerating control
Technical field
It is the air-conditioning for being related to adjust room air, more specifically specifically the invention belongs to air-conditioning technique field Say, be to be related to the method and apparatus for realizing air conditioner refrigerating control.
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 the user comfortable Environment.While air-conditioning provides the user comfortableness, incident is the contradiction with high energy consumption.Energy ezpenditure not only increases User's financial burden is added, also the trend with energy-conserving and environment-protective is opposite.Therefore, how a home from home is being provided the user using air-conditioning While reduce air-conditioning energy consumption, be current air-conditioner producer have been working hard solve problem.
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 and Energy Saving Control, is the problem urgently studied and solve.
The content of the invention
It is an object of the invention to provide a kind of method and apparatus for realizing air conditioner refrigerating control, realize the energy-conservation of air-conditioning, relax Suitable control.
For achieving the above object, what the present invention was provided realizes that the method for air conditioner refrigerating control uses following technical proposals It is achieved:
A kind of method for realizing air conditioner refrigerating control, methods described includes:
Air conditioner refrigerating runs, and obtains real-time indoor environment temperature and setting indoor target temperature, calculates the real-time indoor environment The temperature difference between temperature and the setting indoor target temperature, as the real-time indoor temperature difference, enters according to the real-time indoor temperature difference Row room temperature PID computing, obtains first frequency;Room where air-conditioning is obtained using the infrared distance measurement unit with infrared distance sensor Real-time range between interior target and air-conditioning, the corresponding relation according to known distance and wind speed determines and the real-time range Corresponding wind speed and as real-time wind speed, obtains corresponding with the real-time wind speed according to known wind speed with the corresponding relation of frequency Frequency, as 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 controls are performed:Selection is described Smaller value in first frequency and the second frequency controls the compressor operating of air-conditioning;
If the real-time indoor environment temperature is less than the setting comfort temperature, the second following controls are performed:Air-conditioning is obtained to steam The real-time coil temperature and coil pipe target temperature of device are sent out, is calculated between the real-time coil temperature and the coil pipe target temperature The temperature difference, as the real-time coil pipe temperature difference, disk temperature PID arithmetic is carried out according to the real-time coil pipe temperature difference, obtains the 3rd frequency, selects institute State the compressor operating that the smaller value in first frequency, the second frequency and the 3rd frequency controls air-conditioning;The coil pipe Target temperature determines according to the indoor target temperature, and meets the indoor target temperature hour coil pipe target temperature It is small.
To realize aforementioned invention purpose, what the present invention was provided realizes that the device of air conditioner refrigerating control uses following technical proposals It is achieved:
A kind of device that air conditioner refrigerating control is realized based on distance, described device is included:
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 temperature difference between the real-time indoor environment temperature and setting indoor target temperature, As the real-time indoor temperature difference, PID arithmetic is carried out according to the real-time indoor temperature difference, obtain and export first frequency;
Disk temperature PID arithmetic unit, for calculating the temperature difference between the real-time coil temperature and coil pipe target temperature, as real-time The coil pipe temperature difference, PID arithmetic is carried out according to the real-time coil pipe temperature difference, obtains and export the 3rd frequency;The coil pipe target temperature Determined according to the indoor target temperature, and it is small to meet the indoor target temperature hour coil pipe target temperature;
Infrared distance measurement unit, with infrared distance sensor, for obtain air-conditioning reality between target indoors and air-conditioning When distance;
Real-time wind speed acquiring unit, for obtaining corresponding with the real-time range with the corresponding relation of wind speed according to known distance Wind speed, and as real-time wind speed;
Second frequency acquiring unit, for obtaining corresponding with the real-time wind speed with the corresponding relation of frequency according to known wind speed Frequency, as second frequency;
Control model select unit, for comparing the real-time indoor environment temperature and setting comfort temperature, and knot is compared in output Fruit is used as control model selection signal;
First control unit, the comparative result for being exported in the control model select unit is the real-time indoor environment temperature When degree is not less than the setting comfort temperature, the first frequency is selected to control air-conditioning with the smaller value in the second frequency Compressor operating;
Second control unit, the comparative result for being exported in the control model select unit is the real-time indoor environment temperature It is smaller in the selection first frequency, the second frequency and the 3rd frequency when degree is less than the setting comfort temperature The compressor operating of value control air-conditioning.
Compared with prior art, advantages and positive effects of the present invention are:
In the present invention, when FREQUENCY CONTROL is carried out to compressor, the cooperation between temperature factor and wind speed factor has been considered, made The heat that the air-flow of blower fan operating driving is formed during the heat exchange amount produced by refrigerant being driven when obtaining compressor operating and being somebody's turn to do is handed over The amount of changing matches, it is to avoid press frequency is too high or rotation speed of fan it is too high produced by meaningless energy consumption, realize the energy-conservation fortune of air-conditioning OK.And, wind speed is controlled according to target with the distance of air conditioning room, improves the comfort level of user, and can be in low wind speeds Reduce noise.Additionally, in control for temperature factor to compressor frequency, according to indoor environment temperature and setting comfort temperature Size, selection using room temperature PID control or using based on evaporator coil temperature disk temperature PID control, can be high in room temperature When in time, quickly room is lowered the temperature, reach refrigeration purpose, can make by coil temperature stably in coil pipe target temperature again Have leisure and recall air temperature comfortably, reach cool without cold comfortable cooling effect.Also, the coil pipe target temperature is according to institute Indoor target temperature determination is stated, and it is small to meet the indoor target temperature hour coil pipe target temperature
After specific embodiment of the invention is read in conjunction with the figure, the other features and advantages of the invention will become clearer.
Brief description of the drawings
Fig. 1 is the flow chart of method one embodiment that the present invention realizes air conditioner refrigerating control;
Fig. 2 is the structured flowchart of device one embodiment that the present invention realizes air conditioner refrigerating control.
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 flow chart that the present invention realizes method one embodiment of air conditioner refrigerating control.
As shown in figure 1, the embodiment realizes that the method for air conditioner refrigerating control is realized using the flow with following step:
Step 11:Air conditioner refrigerating runs, and obtains real-time indoor environment temperature, setting indoor target temperature, meanwhile, obtain air-conditioning institute Target and the real-time range of air conditioning room indoors.
Specifically, when air-conditioning is started shooting and run, the indoor environment temperature in room, real-time detection residing for real-time detection air-conditioning Temperature as real-time indoor environment temperature.So-called real-time indoor environment temperature, refers to after air-conditioning start operation, according to setting The indoor environment temperature that constant temperature degree sample frequency is constantly obtained and updated.The acquisition of real-time indoor environment temperature can use existing Technology is realized.For example, being detected into wind-warm syndrome by being arranged on air-conditioning air inlet or being close to the temperature sensor of air-conditioning air inlet Degree, the master control borad of air-conditioning passes through the output signal of collecting temperature sensor and is processed, so as to get EAT, and will The temperature is used as real-time indoor environment temperature.
Setting indoor target temperature refers to wish the indoor environment target temperature to be reached, the setting indoor target temperature A temperature value, or air-conditioning master that can be user be input into by remote control or control terminal for air conditioner or air-conditioning panel The automatic setting value called of control plate.No matter the temperature value is set using which kind of mode, can be got by air-conditioning master control borad.
After air-conditioning start operation, except the real-time indoor environment temperature in room residing for real-time detection air-conditioning, also to examine in real time Survey air-conditioning target indoors, and determine the real-time range of target and air conditioning room.So-called real-time range, is in air-conditioning start After operation, the distance between indoor objects and air-conditioning for constantly obtaining and update according to setting sample frequency.The detection of target and Target and the distance of air conditioning room, are realized, simple structure using the infrared distance measurement unit with infrared distance sensor, easily real Existing, cost is relatively low.Specifically, it is setting infrared distance sensor and the corresponding process circuit on air-conditioning, using infrared survey The reflected intensity that the infrared signal sent away from sensor runs into obstacle target back reflection carries out the far and near detection of target.
Step 12:The temperature difference between real-time indoor environment temperature and setting indoor target temperature is calculated, as real-time interior The temperature difference, room temperature PID computing is carried out according to the real-time indoor temperature difference, obtains first frequency;It is corresponding with wind speed according to known distance Relation determines wind speed corresponding with real-time range and as real-time wind speed, and the corresponding relation according to known wind speed and frequency is obtained Frequency corresponding with real-time wind speed, as second frequency.
Master control borad calculates temperature between the two after real-time indoor environment temperature and setting indoor target temperature is got Difference, as the real-time indoor temperature difference.Then, room temperature PID computing is carried out according to the real-time indoor temperature difference, acquisition is controlled to compressor A frequency, and the frequency is defined as first frequency.Wherein, room temperature PID computing carried out according to the 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.
Meanwhile, wind speed corresponding with real-time range is obtained with the corresponding relation of wind speed always according to known distance, as reality When wind speed.Specifically, the corresponding relation of distance and wind speed is previously stored with the memory of air-conditioning master control borad, wherein, away from From referring to the distance between indoor objects and air-conditioning, wind speed refers to the speed of indoor unit fan of air conditioner operating.For it is different away from From to that should have wind speed that is incomplete same or differing completely, and distance is bigger, and wind speed is lower.Also, it is preferred that, distance with The corresponding relation of wind speed be by research staff under theoretical direction, by substantial amounts of operation of air conditioner simulated experiment obtained by, energy It is enough to take into account air-conditioning comfortableness and energy saving as far as possible.Therefore, it is corresponding with wind speed from distance after real-time range is obtained Real-time range is first found in relation, the wind speed corresponding to the real-time range is then obtained, and using the wind speed as real-time wind speed. Then, frequency corresponding with real-time wind speed is obtained with the corresponding relation of frequency according to known wind speed, as second frequency.
Specifically, the corresponding relation of wind speed and frequency is also previously stored with the memory of air-conditioning master control borad, wherein, Wind speed refers to the speed of indoor unit fan of air conditioner operating, and frequency refers to the running frequency of compressor.For different wind speed, correspondence There are different frequencies.Also, it is preferred that, wind speed and the corresponding relation of frequency be by research staff under theoretical direction, through excessive Obtained by the operation of air conditioner simulated experiment of amount, air-conditioning comfortableness and energy saving can be as far as possible taken into account.Set up wind speed with The starting point of the corresponding relation of frequency is:For air-conditioning system, if indoor machine fan rotating speed is certain, blower fan operating is driven Dynamic air-flow is certain, that is, air quantity is certain;Air quantity is certain, the heat exchange formed with heat exchanger when it is by indoor set heat exchanger Ability is certain.If compressor operating frequency is too small, refrigerant circulation is very few, can reduce the exchange capability of heat of indoor heat exchanger, makes Indoor wind pushing temperature is obtained to be not suitable for.And if compressor operating frequency is excessive, refrigerant circulation is big, indoor heat exchanger exchange capability of heat Greatly, but because the air quantity produced under certain interior machine rotating speed is too small, heat exchanger heat exchange efficiency can be caused to decline, and the big work(of compressor Rate operation wastes energy consumption.Therefore, it is necessary to and restriction corresponding with frequency work to wind speed.
Therefore, after real-time wind speed is obtained, real-time wind speed is first found from the corresponding relation of wind speed and frequency, then Obtain the frequency corresponding to the real-time wind speed, and using the frequency as second frequency.
And, a wind speed may correspond to a frequency, it is also possible to correspondence multiple frequency.If wind speed correspond to many Individual frequency, a namely real-time wind speed is to that should have multiple frequencies, in this case, peak frequency in the multiple frequencies of selection is used as the Two frequencies.
Step 13:Judge real-time indoor environment temperature whether less than setting comfort temperature.If so, performing step 15;If It is no, perform step 14.
The step can simultaneously be carried out with step 12, and two steps are divided into 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 is relaxed with setting Whether thermophilic degree is made comparisons, and judges real-time indoor environment temperature less than setting comfort temperature, to be performed according to comparative result The control of step 14 or step 15.Wherein, setting comfort temperature can be a default setting temperature of air-conditioning when dispatching from the factory, and also may be used Voluntarily being selected and a design temperature setting by user.If by user's sets itself, air-conditioning can provide one Reference temperature value, it is for reference.For example, 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, is performed following First control:Smaller value in selection first frequency and second frequency controls air-conditioning as target frequency according to target frequency Compressor operating.
If real-time indoor environment temperature is not less than setting comfort temperature, show that now indoor temperature is higher, it is necessary to quick Cooling.In this case, the smaller value in both first frequency and second frequency that comparison step 12 is obtained, selection, as target Frequency, the compressor operating of air-conditioning is controlled according to target frequency.
Step 15:If step 13 judges real-time indoor environment temperature less than setting comfort temperature, following the is performed Two controls:The real-time coil temperature and setting coil pipe target temperature of A/C evaporator are obtained, real-time coil temperature and coil pipe is calculated The temperature difference between target temperature, as the real-time coil pipe temperature difference, disk temperature PID arithmetic is carried out according to the real-time coil pipe temperature difference, obtains the 3rd Frequency, the smaller value in selection first frequency, second frequency and the 3rd frequency is controlled empty as target frequency according to target frequency The compressor operating of tune.
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, is reached cool without cold comfortable air-out effect.
Specifically, first, the real-time coil temperature and coil pipe target temperature of A/C evaporator are obtained, real-time coil pipe is calculated The temperature difference between temperature and coil pipe target temperature, as the real-time coil pipe temperature difference, disk temperature PID fortune is carried out according to the real-time coil pipe temperature difference Calculate, obtain the 3rd frequency.
Wherein, the detection of evaporator coil temperature can be detected by setting coil temperature sensor on an evaporator. Real-time detection goes out after coil temperature, the temperature difference between real-time coil temperature and setting coil pipe target temperature is calculated, by the temperature difference As the coil pipe temperature difference.Wherein, coil pipe target temperature determines according to indoor target temperature, and meets indoor target temperature hour coil pipe Target temperature is also small.Then, disk temperature PID arithmetic is carried out according to the coil pipe temperature difference, obtains the target frequency being controlled to compressor, And the target frequency is defined as the 3rd target frequency.The target frequency that the acquisition of disk temperature PID arithmetic is controlled to compressor The method that method may be referred to room temperature PID computing of the prior art and obtain compressor target frequency.Wherein, disk temperature PID fortune The original frequency of calculation can be an original frequency for setting.Preferably, the original frequency of disk temperature PID arithmetic is judged for step 12 Real-time indoor environment temperature is less than setting comfort temperature, the current operation frequency into compressor during the second control process.And, The current operation frequency is at least in compressor operating for a period of time(Such as 3min)A running frequency afterwards.
Then, the smaller value in selection first frequency, second frequency and the 3rd frequency is used as target frequency, according to target frequently Rate controls the compressor operating of air-conditioning.
Frequency of air condition compressor is controlled using the above method, has been considered between temperature factor and wind speed factor Coordinate so that during compressor operating drive refrigerant produced by heat exchange amount with should during blower fan operating driving air-flow formed Heat exchange amount match, it is to avoid press frequency is too high or rotation speed of fan it is too high produced by meaningless energy consumption, realize air-conditioning Energy-saving run.And, wind speed is controlled according to target with the distance of air conditioning room, also improves the comfortableness of air-supply and relaxing for user Appropriateness.Additionally, in control for temperature factor to compressor frequency, it is big with setting comfort temperature according to indoor environment temperature It is small, selection using room temperature PID control or using based on evaporator coil temperature disk temperature PID control, can when room temperature is high and When, quickly room is lowered the temperature, reach refrigeration purpose, again can be by coil temperature stabilization in coil pipe target temperature so that empty Recall air temperature comfortable, reach cool without cold comfortable cooling effect.And, the coil pipe mesh during disk temperature PID control Mark temperature determines that indoor target temperature hour coil pipe target temperature is also small so that coil pipe target temperature according to indoor target temperature Degree is consistent with indoor target temperature, cooling speed when disk temperature PID control is performed in the case that target temperature requirement indoors is low Degree is fast, is rapidly achieved the balance of required indoor 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 the second control is performed, real-time indoor environment temperature is still constantly obtained, and it is relatively more real-time Indoor environment temperature and the size for setting comfort temperature.Once real-time indoor environment temperature is then moved back not less than setting comfort temperature Go out the second control process, be transferred to the first control process, to cause indoor temperature stabilization in setting indoor target temperature.
As preferred embodiment, in real-time indoor environment temperature not less than comfort temperature and real-time indoor environment temperature When the difference of degree and setting comfort temperature is more than setting difference, then the second control process is exited, be transferred to the first control process.Pass through Reasonable selection sets 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 Without cold comfortableness.
As preferred implementation method, a setting highest frequency is previously stored with the memory of air-conditioning master control borad, If step 14 judges that the smaller value in first frequency and second frequency judges first more than setting highest frequency, or step 15 Smaller value in frequency, second frequency and the 3rd frequency more than setting highest frequency, then will setting highest frequency as target frequently Rate.That is, either according to which FREQUENCY CONTROL compressor, ensureing the running frequency of compressor no more than setting highest Frequency.
Fig. 2 is referred to, the structured flowchart of device one embodiment of air conditioner refrigerating control is realized the figure shows the present invention.
As shown in Fig. 2 the construction unit that is included of the air conditioner refrigerating control device of the embodiment and its function 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, as the real-time indoor temperature difference, PID fortune is carried out according to the real-time indoor temperature difference Calculate, obtain and export first frequency.
Coil temperature acquiring unit 203, the real-time coil temperature for obtaining A/C evaporator.
Disk temperature PID arithmetic unit 204, real-time coil temperature and disk for calculating the acquisition of coil temperature acquiring unit 203 The temperature difference between pipe target temperature, as the real-time coil pipe temperature difference, PID arithmetic is carried out according to the real-time coil pipe temperature difference, is obtained and is exported 3rd frequency.Wherein, coil pipe target temperature determines according to indoor target temperature, and meets indoor target temperature hour coil pipe target Temperature is small.
Infrared distance measurement unit 205, includes infrared distance sensor, for obtain in real time air-conditioning institute's target indoors and Real-time range between air-conditioning.
Real-time wind speed acquiring unit 206, for being obtained and real-time range with the corresponding relation of wind speed according to known distance Corresponding wind speed, and as real-time wind speed.
Second frequency acquiring unit 207, for being obtained and real-time wind speed with the corresponding relation of frequency according to known wind speed Corresponding frequency, as second frequency.
Control model select unit 208, for comparing the real-time indoor ring acquired in indoor environment temperature acquiring unit 201 Border temperature and setting comfort temperature, and comparative result is exported as control model selection signal.
First control unit 209, the comparative result for being exported in control model select unit 208 is real-time indoor environment When temperature is not less than setting comfort temperature, the first frequency of the output of selection room temperature PID arithmetic element 202 obtains single with second frequency Smaller value in the second frequency of the output of unit 207 controls the compressor operating of air-conditioning according to target frequency as target frequency.
Second control unit 210, the comparative result for being exported in control model select unit 208 is real-time indoor environment When temperature is less than setting comfort temperature, first frequency, the second frequency acquiring unit of the output of selection room temperature PID arithmetic element 202 Smaller value in the second frequency of 207 outputs and the 3rd frequency of the output of disk temperature PID arithmetic unit 204 is used as target frequency, root The compressor operating of air-conditioning is controlled according to target frequency.
Used as preferred embodiment, refrigeration control device can also include:
Indoor recommendation target temperature acquiring unit, for obtaining indoor recommendation target temperature;
Coil pipe recommends target temperature acquiring unit, and target temperature is recommended for obtaining coil pipe;
First difference computational unit, it is poor as first with the difference of indoor target temperature for calculating indoor recommendation target temperature Value;
Second difference computational unit, for obtaining the second difference according to the differences of the second difference of formula=a* first;A is no more than 1 Positive number;
Coil pipe target temperature determining unit, recommends the difference of target temperature and the second difference, result of calculation to determine for calculating coil pipe To perform the actual coil pipe target temperature of disk temperature PID arithmetic and exporting to disk temperature PID arithmetic unit.
Each construction unit in said apparatus runs corresponding software program, and according to the flow execution air-conditioning of preceding method Refrigeration control, realizes that the energy-conservation of air-conditioning is comfortably controlled.
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 (9)

1. it is a kind of to realize the method that air conditioner refrigerating is controlled, it is characterised in that methods described includes:
Air conditioner refrigerating runs, and obtains real-time indoor environment temperature and setting indoor target temperature, calculates the real-time indoor environment The temperature difference between temperature and the setting indoor target temperature, as the real-time indoor temperature difference, enters according to the real-time indoor temperature difference Row room temperature PID computing, obtains first frequency;Room where air-conditioning is obtained using the infrared distance measurement unit with infrared distance sensor Real-time range between interior target and air-conditioning, the corresponding relation according to known distance and wind speed determines and the real-time range Corresponding wind speed and as real-time wind speed, obtains corresponding with the real-time wind speed according to known wind speed with the corresponding relation of frequency Frequency, as 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 controls are performed:Selection is described Smaller value in first frequency and the second frequency controls the compressor operating of air-conditioning;
If the real-time indoor environment temperature is less than the setting comfort temperature, the second following controls are performed:Air-conditioning is obtained to steam The real-time coil temperature and coil pipe target temperature of device are sent out, is calculated between the real-time coil temperature and the coil pipe target temperature The temperature difference, as the real-time coil pipe temperature difference, disk temperature PID arithmetic is carried out according to the real-time coil pipe temperature difference, obtains the 3rd frequency, selects institute State the compressor operating that the smaller value in first frequency, the second frequency and the 3rd frequency controls air-conditioning;The coil pipe Target temperature determines according to the indoor target temperature, and meets the indoor target temperature hour coil pipe target temperature It is small.
2. method according to claim 1, it is characterised in that the coil pipe target temperature is according to the indoor target temperature It is determined that, specifically include:
Obtain indoor recommendation target temperature and coil pipe recommends target temperature;
The difference of the indoor recommendation target temperature and the 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 and 2, it is characterised in that in the wind speed and the corresponding relation of frequency, a wind Speed correspond to multiple frequencies, and the second frequency is the corresponding peak frequency of the real-time wind speed.
4. method according to claim 1 and 2, it is characterised in that if in the first frequency and the second frequency Smaller value in smaller value or the first frequency, the second frequency and the 3rd frequency is more than setting highest frequency, Then using the setting highest frequency as the target frequency, the compressor operating of air-conditioning is controlled according to the target frequency.
5. method according to claim 1 and 2, it is characterised in that during second control is performed, continue to obtain Take the real-time indoor environment temperature and the real-time indoor environment temperature is made comparisons with the setting comfort temperature, described When real-time indoor environment temperature is not less than the setting comfort temperature, the second described control is exited, perform first control.
6. method according to claim 5, it is characterised in that during second control is performed, continue to obtain The real-time indoor environment temperature simultaneously makes comparisons the real-time indoor environment temperature with the setting comfort temperature, in the reality When indoor environment temperature not less than it is described setting comfort temperature and the real-time indoor environment temperature and the setting comfort temperature Difference more than setting difference when, exit the second described control, perform first control.
7. method according to claim 1 and 2, it is characterised in that when second control is performed, obtains compressor Current operation frequency, using the current operation frequency as the disk temperature PID arithmetic original frequency, and according to the coil pipe temperature Difference carries out the disk temperature PID arithmetic.
8. it is a kind of to realize the device that air conditioner refrigerating is controlled, it is characterised 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 temperature difference between the real-time indoor environment temperature and setting indoor target temperature, As the real-time indoor temperature difference, PID arithmetic is carried out according to the real-time indoor temperature difference, obtain and export first frequency;
Disk temperature PID arithmetic unit, for calculating the temperature difference between the real-time coil temperature and coil pipe target temperature, as real-time The coil pipe temperature difference, PID arithmetic is carried out according to the real-time coil pipe temperature difference, obtains and export the 3rd frequency;The coil pipe target temperature Determined according to the indoor target temperature, and it is small to meet the indoor target temperature hour coil pipe target temperature;
Infrared distance measurement unit, with infrared distance sensor, for obtain air-conditioning reality between target indoors and air-conditioning When distance;
Real-time wind speed acquiring unit, for obtaining corresponding with the real-time range with the corresponding relation of wind speed according to known distance Wind speed, and as real-time wind speed;
Second frequency acquiring unit, for obtaining corresponding with the real-time wind speed with the corresponding relation of frequency according to known wind speed Frequency, as second frequency;
Control model select unit, for comparing the real-time indoor environment temperature and setting comfort temperature, and knot is compared in output Fruit is used as control model selection signal;
First control unit, the comparative result for being exported in the control model select unit is the real-time indoor environment temperature When degree is not less than the setting comfort temperature, the first frequency is selected to control air-conditioning with the smaller value in the second frequency Compressor operating;
Second control unit, the comparative result for being exported in the control model select unit is the real-time indoor environment temperature It is smaller in the selection first frequency, the second frequency and the 3rd frequency when degree is less than the setting comfort temperature The compressor operating of value control air-conditioning.
9. device according to claim 8, it is characterised in that described device also includes:
Indoor recommendation target temperature acquiring unit, for obtaining indoor recommendation target temperature;
Coil pipe recommends target temperature acquiring unit, and target temperature is recommended for obtaining coil pipe;
First difference computational unit, the difference conduct for calculating the indoor recommendation target temperature and the indoor target temperature First difference;
Second difference computational unit, for obtaining the second difference according to the differences of the second difference of formula=a* first;A is no more than 1 Positive number;
Coil pipe target temperature determining unit, the difference of target temperature and second difference is recommended for calculating the coil pipe, is calculated Result is defined as performing the actual coil pipe target temperature of the disk temperature PID arithmetic and exports to the disk temperature PID arithmetic unit.
CN201611087689.1A 2016-12-01 2016-12-01 Method and device for realizing refrigeration control of air conditioner Pending CN106679071A (en)

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