CN104406272B - A kind of air conditioning control method - Google Patents

A kind of air conditioning control method Download PDF

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Publication number
CN104406272B
CN104406272B CN201410690308.3A CN201410690308A CN104406272B CN 104406272 B CN104406272 B CN 104406272B CN 201410690308 A CN201410690308 A CN 201410690308A CN 104406272 B CN104406272 B CN 104406272B
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China
Prior art keywords
temperature
compressor
tube
outdoor
real time
Prior art date
Application number
CN201410690308.3A
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Chinese (zh)
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CN104406272A (en
Inventor
罗永前
熊军
吴俊鸿
魏广飞
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珠海格力电器股份有限公司
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Priority to CN201410690308.3A priority Critical patent/CN104406272B/en
Publication of CN104406272A publication Critical patent/CN104406272A/en
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Publication of CN104406272B publication Critical patent/CN104406272B/en

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Classifications

    • 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
    • F24F11/30Control 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
    • F24F11/70Control 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
    • 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
    • F24F2110/12Temperature of the outside air

Abstract

The present invention relates to operation of air conditioner control field, and in particular to a kind of air conditioning control method.Including step:The outer tube temperature T of S1, in real time detection outdoor unitOuter tube, outdoor environment temperature TOuter shroudAnd compressor exhaust temperature TRow, and try to achieve according to the running speed function of outdoor fan the real time execution rotating speed of outdoor fan;S2, in real time detection indoor environment temperature TIt is interior, and by indoor environment temperature TIt is interiorAnd outdoor environment temperature TOuter shroudBring the real time execution frequency that compressor operating frequency function asks for compressor into;The inner tube temperature T of S3, in real time detection indoor setInner tubeAnd compressor air suction temperature TInhale, and by inner tube temperature TInner tube, compressor air suction temperature TInhaleAnd outdoor environment temperature TOuter shroudWith compressor exhaust temperature TRowBring the real-time aperture that expansion valve opening function asks for expansion valve into.This method make it that the complete machine runtime system response time is shorter, can rapidly enter stable operation stage, and realization is precisely controlled so that early stage matching experiment is less.

Description

A kind of air conditioning control method
Technical field
The present invention relates to operation of air conditioner control field, and in particular to a kind of air conditioning control method.
Background technology
As the improvement of people's living standards, people have many families or office space to the dependence more and more higher of air-conditioning Inside heated or cooling in summer using air-conditioning progress winter.Generally, in the prior art, most air conditioner is using adopting The state modulator such as temperature collected compressor operating frequency, expansion valve opening, four-way valve member and internal-external machine rotating speed, realize refrigeration The function of heating, by the response speed of control logic realize indoor environment comfort level stabilization whether.
In the prior art, during operation of air conditioner, to compressor operating frequency, expansion valve opening, four-way valve member and internal-external machine Fuzzy control method plus PID control method are used when rotating speed is controlled more.However, adding PID control using fuzzy control method When method is controlled, the complete machine runtime system response time is longer.High today comfortably lived, such a control are pursued in people Method can not be precisely controlled, and need the time longer when reaching stable, and complete machine needs largely in fact when formulating control parameter Test or empirical value.
Based on above description, need badly and want a kind of new air conditioning control method, transported with solving complete machine present in prior art System response time is longer during row, it is impossible to be precisely controlled, and outer blower fan, expansion valve opening coordinated control system stabilization time are longer easily Fluctuation, it is poor that the change of airconditioning control frequency comparatively fast causes fluctuations in indoor temperature comfortableness occur with indoor working conditions change, and The problem of complete machine needs many experiments or empirical value when formulating control parameter.
The content of the invention
In view of this, it is an object of the invention to provide a kind of air conditioning control method, this method cause be when complete machine is run The system response time is shorter, can rapidly enter stable operation stage, and realization is precisely controlled so that early stage matching experiment is less.
It is another object of the present invention to provide a kind of air conditioning control method, this method enables air-conditioning self-operating to reach Best operating point, complete machine operational energy efficiency is higher.
It is yet a further object of the present invention to provide a kind of air conditioning control method, this method causes outer blower fan, expansion valve to open Degree coordinated control system stabilization time is shorter and is difficult fluctuation, by that can realize complete machine stable operation to interference information processing, Complete machine concussion is smaller.
The embodiment of the present invention uses following technical scheme:
A kind of air conditioning control method, including step:
The outer tube temperature T of S1, in real time detection outdoor unitOuter tube, outdoor environment temperature TOuter shroudAnd compressor during operation of air conditioner Delivery temperature TRow, and the running speed function for bringing detected value into outdoor fan tries to achieve the real time execution turn of outdoor fan Speed;
S2, in real time detection indoor environment temperature TIt is interior, and by detected indoor environment temperature TIt is interior, detected in step S1 The outdoor environment temperature T arrivedOuter shroudAnd be preset indoor temperature TSettingBring the reality that compressor operating frequency function asks for compressor into When running frequency;
The inner tube temperature T of S3, in real time detection indoor setInner tubeAnd compressor air suction temperature TInhale, and by detected inner tube Temperature TInner tube, compressor air suction temperature TInhaleAnd the outdoor environment temperature T detected by step S1Outer shroudAnd compressor exhaust temperature TRowBring the real-time aperture that expansion valve opening function asks for expansion valve into.
Preferably, in step sl, the function for asking for the running speed l_F of the outdoor fan is;
L_F=a1(TOuter tube-TOuter shroud)+b1*TRow
Wherein,
Parameter a1For the principal impact factor of outdoor fan running speed;
Parameter b1For the secondary factor of influence of outdoor fan running speed.
Preferably, the parameter a1With parameter b1Drawn all in accordance with fitting experimental data.
Preferably, in step s 2, the function for asking for the compressor operating frequency λ _ f is:
Wherein,
TSettingFor preset indoor temperature;
η is compressor operating frequency principal impact factor;
fAmendmentFor compressor operating frequency time factor of influence.
Preferably, the parameter η and parameter fAmendmentDrawn all in accordance with fitting experimental data.
Preferably, in step s3, the function for asking for the expansion valve opening λ _ P is:
Wherein,
Q is expanding valve body actual flow;
qmFor the maximum stream flow of expanding valve body aperture.
Preferably, the initial opening of the expansion valve is drawn according to fitting experimental data.
Preferably, when the running speed of the outdoor fan reaches stable, outdoor unit records now outdoor fan Running speed, the initial value of outdoor fan running speed when being started shooting as next similar environments.
The advantageous effects of technical scheme that the embodiment of the present invention is proposed are:
Because air conditioning control method provided herein introduces neural control method, the control method relates to domestic air conditioning And outdoor fan rotating speed, expansion valve opening, the three parameter piecemeals of compressor operating frequency arrived are controlled, but it is again interrelated. Institute can make it that the complete machine runtime system response time is shorter in this way, can rapidly enter stable operation stage, and realize essence Quasi- control so that early stage matching experiment is less.And this method enables air-conditioning self-operating to reach best operating point, complete machine operation Efficiency is higher.It can be made a response when operating mode is fluctuated so that when outer blower fan, expansion valve opening coordinated control system are stable Between it is shorter and be difficult fluctuation.Because individually control will not link, by the way that complete machine stable operation can be realized to interference information processing, So that concussion is smaller during complete machine operation.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, institute in being described below to the embodiment of the present invention The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to present invention implementation The content and these accompanying drawings of example obtain other accompanying drawings.
Fig. 1 is the airconditioning control flow chart that the present invention is provided.
Embodiment
For make present invention solves the technical problem that, the technical scheme that uses and the technique effect that reaches it is clearer, below The technical scheme of the embodiment of the present invention will be described in further detail with reference to accompanying drawing, it is clear that described embodiment is only It is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, those skilled in the art exist The every other embodiment obtained under the premise of creative work is not made, the scope of protection of the invention is belonged to.
This application provides a kind of air conditioning control method, the control method includes step:
The outer tube temperature T of S1, in real time detection outdoor unitOuter tube, outdoor environment temperature TOuter shroudAnd compressor during operation of air conditioner Delivery temperature TRow, and the running speed function for bringing detected value into outdoor fan tries to achieve the real time execution turn of outdoor fan Speed.
S2, in real time detection indoor environment temperature TIt is interior, and by detected indoor environment temperature TIt is interior, detected in step S1 The outdoor environment temperature T arrivedOuter shroudAnd be preset indoor temperature TSettingBring the reality that compressor operating frequency function asks for compressor into When running frequency.
The inner tube temperature T of S3, in real time detection indoor setInner tubeAnd compressor air suction temperature TInhale, and by detected inner tube Temperature TInner tube, compressor air suction temperature TInhaleAnd the outdoor environment temperature T detected by step S1Outer shroudAnd compressor exhaust temperature TRowBring the real-time aperture that expansion valve opening function asks for expansion valve into.
Specifically, as shown in figure 1, the main outer tube temperature T by outdoor unit of control of outdoor fan running speedOuter tubeWith room External environment temperature TOuter shroudControl.Also, outdoor fan also suffers from the compressor exhaust temperature T during operation of air conditioner when runningRowShadow Ring, compressor exhaust temperature T is detected so working asRowOutdoor fan can be made to run at high speed when too high, to reduce compressor air-discharging temperature Spend TRow, to realize the reliability of system.Wherein, the function for asking for the running speed l_F of the outdoor fan is;
L_F=a1(TOuter tube-TOuter shroud)+b1*TRow
Wherein,
Parameter a1For the principal impact factor of outdoor fan running speed;
Parameter b1For the secondary factor of influence of outdoor fan running speed.
Preferably, the parameter a1With parameter b1Drawn all in accordance with fitting experimental data.
When outdoor fan is started working, the outer tube temperature T of data, i.e. outdoor unit is detected by more thanOuter tube, outdoor environment temperature TOuter shroudAnd compressor exhaust temperature TRowBring the running speed function of outdoor fan into, calculate the running speed l_ of outdoor fan F。
It is preferably, outdoor when the running speed of the outdoor fan reaches that system is stable in the present embodiment Chance voluntarily records the running speed of now outdoor fan, outdoor fan running speed when being started shooting as next similar environments Initial value.
In the present embodiment, preferably, the outer tube temperature T of outdoor unitOuter tubePass through what is arranged on outdoor side condenser Pipe warming thermometer bulb detects, outdoor environment temperature TOuter shroudDetected by the circumstance temperature temperature-sensitive bag for being disposed in the outdoor side.Compressor air-discharging temperature Spend TRowDetected by being arranged on the temperature-sensitive bag at compressor exhaust pipe.Certainly, the outer tube temperature T of outdoor unitOuter tube, outdoor environment Temperature TOuter shroudAnd compressor exhaust temperature TRowDetection device and detection mode be not limited thereto, can also be by other Mode or equipment detection.
Because complete machine running frequency becomes with indoor set load variations, but indoor environment temperature is in actual motion Alternation, therefore this control method directly uses preset indoor temperature TSettingTo control the parameter of compressor operating frequency, such as Fig. 1 It is shown, by outdoor environment temperature TOuter shroudWith preset indoor temperature TSettingThe initial value of compressor operating frequency is determined, then with indoor ring Border temperature TIt is interiorWith preset indoor temperature TSettingRate of change as the correction value of compressor operating frequency, so can quickly realize Preset indoor temperature TSettingSetting value is reached, again will not be because of indoor environment temperature TIt is interiorChange produce concussion cause compressor frequency Energy consumption caused by the frequent lifting frequency of rate is higher, and then causes fluctuations in indoor temperature is larger to cause human body uncomfortable.Ask for the pressure Contracting machine running frequency λ _ f function is:
Wherein,
TSettingFor preset indoor temperature;
η is compressor operating frequency principal impact factor;
fAmendmentFor compressor operating frequency time factor of influence.
The parameter η and parameter fAmendmentDrawn all in accordance with fitting experimental data.
In the present embodiment, preferably, the preset indoor temperature TSettingBy the direct setting value of remote control.
To sum up, the control process of compressor operating frequency is:After outdoor fan is opened, by outdoor environment temperature TOuter shroudAnd it is pre- If indoor temperature TSettingBring into and ask for compressor operating frequency λ _ f function and calculate the initial optimum frequency of compressor, according to interior Environment temperature TIt is interiorAnd preset indoor temperature TSettingDifference rate of change carry out frequency trim, prevent from rising soon soon dropping causing Indoor Temperature Degree fluctuation.
The aperture control of expansion valve is from compressor starts operation, and the initial control aperture of the expansion valve is according to experiment number Drawn according to fitting.As shown in figure 1, the operation aperture of expansion valve is according to compressor air suction temperature TInhaleWith inner tube temperature TInner tubeChange Detected outdoor environment temperature T in rate and step S1Outer shroudWith compressor exhaust temperature TRowIt is determined that.By detected room External environment temperature TOuter shroud, compressor exhaust temperature TRow, compressor air suction temperature TInhaleAnd inner tube temperature TInner tubeBring into and ask for expansion valve and open Degree λ _ P function is calculated, by compressor air suction temperature TInhaleWith inner tube temperature TInner tubeRate of change, compressor exhaust temperature TRow With outdoor environment temperature TOuter shroudRate of change coordinated signals expansion valve operation curve adjusted in real time so that system is automatically achieved Optimal operational condition.The function for asking for the expansion valve opening λ _ P is:
Wherein,
Q is expanding valve body actual flow;
qmFor the maximum stream flow of expanding valve body aperture.
Real time execution frequency of this control method from algorithm to compressor, the real time execution rotating speed of outdoor fan, expansion The real-time aperture of valve is separately controlled, but compressor exhaust temperature TRowWith the real time execution rotating speed of outdoor fan and compressor Real time execution frequency, which has, a little to be associated, indoor environment temperature TIt is interiorWith the real time execution rotating speed and the real-time fortune of compressor of outdoor fan Line frequency close relation, so whole control system is all to be adjusted by constant or relative steadiness parameter as leading certainty factor Saving associated components work, (the real time execution frequency of compressor is by outdoor environment temperature TOuter shroudWith preset indoor temperature TSettingControl, room The real time execution rotating speed of outer blower fan by outdoor unit outer tube temperature TOuter tubeWith outdoor environment temperature TOuter shroudDifference is controlled, the reality of expansion valve Shi Kaidu is by compressor exhaust temperature TRowWith outdoor environment temperature TOuter shroudDifference is controlled).So system early stage can be stablized and quickly reach Refrigeration and heat-production functions are realized to target set temperature, because additional revisory coefficient can make complete machine stable operation, and according to nerve Parameters revision is carried out according to the benchmark of upper section arithmetic result when control method is calculated, reaches that optimum operation is combined, in whole early stage Air conditioner intelligent regulation can be achieved in the value that coefficient correlation need to be only found in experiment.
In the present embodiment, the parameter of best operating point can be remembered during three's coordinated signals every time, operation next time is used as Adjustment, so that using former data memory as with reference to progress quick regulation when each temperature-sensitive bag temperature changes so that Complete machine is rapidly achieved stable state.
This programme is by introducing neural control method, the real time execution frequency for the compressor that domestic air conditioning is related to, room The real time execution rotating speed of outer blower fan, the three parameter piecemeal controls of the real-time aperture of expansion valve, but it is again interrelated.Such complete machine Stable operation can be rapidly entered, can be made a response when operating mode is fluctuated, it is single due to individually controlling to link so that whole Concussion is smaller when machine is run.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art it is various it is obvious change, Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.

Claims (8)

1. a kind of air conditioning control method, it is characterised in that including step:
The outer tube temperature T of S1, in real time detection outdoor unitOuter tube, outdoor environment temperature TOuter shroudAnd compressor air-discharging during operation of air conditioner Temperature TRow, and the running speed function for bringing detected value into outdoor fan tries to achieve the real time execution rotating speed of outdoor fan;
S2, in real time detection indoor environment temperature TIt is interior, and by detected indoor environment temperature TIt is interior, it is detected in step S1 Outdoor environment temperature TOuter shroudAnd be preset indoor temperature TSettingBring the real-time fortune that compressor operating frequency function asks for compressor into Line frequency;
The inner tube temperature T of S3, in real time detection indoor setInner tubeAnd compressor air suction temperature TInhale, and by detected inner tube temperature TInner tube, compressor air suction temperature TInhaleAnd the outdoor environment temperature T detected by step S1Outer shroudWith compressor exhaust temperature TRowBand Enter the real-time aperture that expansion valve opening function asks for expansion valve.
2. air conditioning control method as claimed in claim 1, it is characterised in that in step sl, asks for the outdoor fan Running speed l_F function is;
L_F=a1(TOuter tube-TOuter shroud)+b1*TRow
Wherein,
Parameter a1For the principal impact factor of outdoor fan running speed;
Parameter b1For the secondary factor of influence of outdoor fan running speed.
3. air conditioning control method as claimed in claim 2, it is characterised in that the parameter a1With parameter b1All in accordance with experiment number Drawn according to fitting.
4. air conditioning control method as claimed in claim 1, it is characterised in that in step s 2, asks for the compressor operating Frequency lambda _ f function is:
Wherein,
TSettingFor preset indoor temperature;
η is compressor operating frequency principal impact factor;
fAmendmentFor compressor operating frequency time factor of influence.
5. air conditioning control method as claimed in claim 4, it is characterised in that the parameter η and parameter fAmendmentAll in accordance with experiment number Drawn according to fitting.
6. air conditioning control method as claimed in claim 1, it is characterised in that in step s3, asks for the expansion valve opening λ _ P function is:
Wherein,
Q is expanding valve body actual flow;
qmFor the maximum stream flow of expanding valve body aperture.
7. air conditioning control method as claimed in claim 6, it is characterised in that the initial opening of the expansion valve is according to experiment number Drawn according to fitting.
8. air conditioning control method as claimed in claim 2, it is characterised in that when the running speed of the outdoor fan reaches surely Regularly, outdoor unit records the running speed of now outdoor fan, and outdoor fan operation turns when being started shooting as next similar environments The initial value of speed.
CN201410690308.3A 2014-11-25 2014-11-25 A kind of air conditioning control method CN104406272B (en)

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