CN102538136A - Control method for calculating outdoor environmental temperature by adopting temperature of outdoor condenser - Google Patents
Control method for calculating outdoor environmental temperature by adopting temperature of outdoor condenser Download PDFInfo
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- CN102538136A CN102538136A CN2011104358341A CN201110435834A CN102538136A CN 102538136 A CN102538136 A CN 102538136A CN 2011104358341 A CN2011104358341 A CN 2011104358341A CN 201110435834 A CN201110435834 A CN 201110435834A CN 102538136 A CN102538136 A CN 102538136A
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Abstract
The invention relates to a control method for calculating an outdoor environmental temperature by adopting a temperature of an outdoor condenser. An air conditioner is provided with a condenser coil temperature sensor which is arranged on the outdoor condenser. A coil temperature Te is sampled by the temperature sensor so as to calculate the outdoor environmental temperature To. The control method comprises the following steps of: the step A, according to a current operation state of the air conditioner, judging whether to inhibit from calculating the outdoor environmental temperature To, entering the step E if a result is yes, and entering the step B if the result is no; the step B, sampling the coil temperature Te of the outdoor condenser by the condenser coil temperature sensor; the step C, according to a current operating frequency F of a compressor of the air conditioner and a current operating mode of the air conditioner, calculating a compressor frequency compensating value G=F(f), wherein F(f) is a compressor frequency compensating formula; and the step D, calculating the outdoor environmental temperature To according to a formula that To=Te+F(f). The control method for calculating the outdoor environmental temperature by adopting the temperature of the outdoor condenser has the characteristics of flexibility for operation and wide application range.
Description
Technical field
The present invention relates to a kind of control method that adopts outdoor condenser temperature to extrapolate outdoor environment temperature.
Background technology
Traditional transducer air conditioning has generally been installed outdoor environment temperature sensor and outdoor coil pipe used temperature sensor totally two temperature sensors on outdoor condenser.Wherein, The outdoor environment temperature sensor is installed in the next door of outdoor condenser, is used to detect outdoor environment temperature, and air-conditioner can judge whether outdoor environment temperature is too high or too low according to this outdoor environment temperature; The pressure of estimation air-conditioning system; Judge whether to limit frequency or stoppage protection, guarantee the air-conditioning system security of operation, and be used to control the rotating speed of outdoor fan; And outdoor coil pipe used temperature sensor is installed on the outdoor condenser; The coil temperature that is used for sensing chamber's external condenser; Be used to judge when whether off-premises station needs defrost and judge extremes of temperature and limit frequently or stoppage protection, thus protection system, and the performance maximal efficiency.
Because this traditional transducer air conditioning has adopted two temperature sensors to be respectively applied for the coil temperature and the outdoor environment temperature of sensing chamber's external condenser simultaneously, thus cause cost higher, and also increased the maintenance rate of air-conditioner, particularly temperature sensor.
Summary of the invention
The object of the invention aims to provide the control method that a kind of simple and reasonable, flexible operation, the cost of manufacture outdoor condenser temperature of employing low, applied widely are extrapolated outdoor environment temperature, to overcome weak point of the prior art.
A kind of control method that adopts outdoor condenser temperature to extrapolate outdoor environment temperature by this purpose design; Air-conditioner is equipped with the condenser coil temperature sensor on outdoor condenser; It is characterized in that calculating outdoor environment temperature To, it is characterized in that may further comprise the steps through the coil temperature Te of the outdoor condenser of condenser coil temperature sensor sampling:
Steps A, the current running status according to air-conditioner judges whether to forbid carrying out the reckoning of outdoor environment temperature To, when its result when being, get into step e, when its result for not the time, get into step B;
Step B is through the coil temperature Te of the outdoor condenser of condenser coil temperature sensor sampling;
Step C according to the current running frequency f and the current operational mode of air-conditioner of the compressor of air-conditioner, calculates compressor frequency compensating value G=F (f), and wherein F (f) is a compressor frequency revisal formula;
Step D, counting chamber external environment temperature T o, To=Te+F (f);
Step e withdraws from the reckoning of outdoor environment temperature To.
The condition that forbidding in the said steps A carried out the reckoning of outdoor environment temperature To comprises:
It is constant to open the outdoor environment temperature of calculating before the maintenance in a period of time t1 that perhaps stops at the compressor of air-conditioner, and the span of t1 is 0～20 minute;
Perhaps, when the air conditioner heat-production defrost moves or the outdoor environment temperature calculated before keeping in a period of time t2 when finishing of defrost constant, its span of t2 is 0～20 minute;
Perhaps; At the compressor operating of air-conditioner and outdoor fan stops or the outdoor fan wind speed is forbidden carrying out outdoor environment temperature when being lower than N rev/min and calculated; The outdoor environment temperature of calculating before during this period of time keeping is constant, and wherein the span of N is 0～800 rev/min.
The result of calculation of the compressor frequency revisal formula F (f) among the said step C is relevant with the current running frequency f of compressor;
Compressor frequency revisal formula F (f) draws result of calculation through the current running frequency f that inquires about compressor in the position of this form that presets according to the form that presets; Pattern different choice different preset according to the current operation of compressor is decided form;
Compressor frequency revisal formula F (f) through the interval that the current running frequency f that confirms compressor belongs to, selects different computing formula to draw result of calculation according to the curve that presets;
The curve that presets is divided into the n section, according to different computing formula below the current running frequency f selection of compressor;
As f＜f
1The time, F (f)=h1;
Work as f
1≤f＜f
2The time, F (f)=(h2-h1) * (f-f
1)/(f
2-f
1)+h1;
Work as f
2≤f＜f
3The time, F (f)=(h3-h2) * (f-f
2)/(f
3-f
2)+h2;
Work as f
3≤f＜f
4The time, F (f)=(h4-h3) * (f-f
3)/(f
4-f
3)+h3;
......；
Work as f
(n-2)≤f＜f
(n-1)The time, F (f)=(h
(n-1)-h
(n-2)) * (f-f
(n-2))/(f
(n-1)-f
(n-2))+h
(n-2)
Work as f
(n-1)≤f＜f
nThe time, F (f)=(h
n-h
(n-1)) * (f-f
(n-1))/(f
n-f
(n-1))+h
(n-1)
Work as f
nDuring≤f, F (f)=h
n
Wherein,
f
1Be compressor the 1st frequency, f
1Span be 0～60Hz;
f
2Be compressor the 2nd frequency, f
2Span be f
1～80Hz;
f
3Be compressor the 3rd frequency, f
3Span be f
2～100Hz;
f
4Be compressor the 4th frequency, f
4Span be f
3～110Hz;
......；
f
(n-2)Be compressor n-2 frequency, f
(n-2)Span be f
(n-3)～150Hz;
f
(n-1)Be compressor n-1 frequency, f
(n-1)Span be f
(n-2)～160Hz;
f
nBe compressor n frequency, f
nSpan be f
(n-1)～200Hz;
Wherein,
h
1～h
nFor compressor frequency at f
1～f
nThe time the compressor frequency compensating value,
h
1～h
nSpan be-20 ℃～30 ℃, the wherein scope of n is 1～50.
When the compressor of air-conditioner is out of service, compressor frequency revisal formula F (f)=0, i.e. the coil temperature Te of the outdoor condenser of outdoor environment temperature To=.
Control method also comprises step C1, and step C1 is between step C and step e; Step C1 according to the rotating speed of the current outdoor fan of air-conditioner, calculates outdoor fan compensating value F1 (rpm), outdoor environment temperature To=Te+F (the f)+F1 (rpm) among this moment step D; Wherein, the span of F1 (rpm) is-5 ℃～5 ℃.
Control method also comprises step C2, and step C2 is between step C and step e; Step C2 according to the electronic expansion valve opening of current air-conditioner, calculates electronic expansion valve opening compensating value F2 (PMV), at this moment outdoor environment temperature To=Te+F (the f)+F2 (PMV) among the step D; Wherein, the span of F2 (PMV) is-3 ℃～3 ℃.
Control method also comprises step C3, and step C3 is between step C and step e; Step C3 carries out the coil temperature revisal of outdoor condenser according to the coil temperature Te of the outdoor condenser of current air-conditioner, outdoor environment temperature To=Te+F (the f)+H1 among the compensating value H1 of the coil temperature of counting chamber external condenser, this moment step D; Wherein, the span of H1 is-3 ℃～10 ℃.
Control method also comprises step C1 and step C2, and step C1 and step C2 are between step C and step e; Step C1 according to the rotating speed of the current outdoor fan of air-conditioner, calculates outdoor fan compensating value F1 (rpm), and wherein, the span of F1 (rpm) is-5 ℃～5 ℃; Step C2 according to the electronic expansion valve opening of current air-conditioner, calculates electronic expansion valve opening compensating value F2 (PMV), and wherein, the span of F2 (PMV) is-3 ℃～3 ℃.Outdoor environment temperature To=Te+F (f)+F1 (rpm)+F2 (PMV) among this moment step D.
Control method also comprises step C1 and step C3, and step C1 and step C3 are between step C and step e; Step C1 according to the rotating speed of the current outdoor fan of air-conditioner, calculates outdoor fan compensating value F1 (rpm), and wherein, the span of F1 (rpm) is-5 ℃～5 ℃; Step C3 carries out the coil temperature revisal of outdoor condenser according to the coil temperature Te of the outdoor condenser of current air-conditioner, the compensating value H1 of the coil temperature of counting chamber external condenser, and wherein, the span of H1 is-3 ℃～10 ℃; Outdoor environment temperature To=Te+F (f)+F1 (rpm)+H1 among this moment step D.
Control method also comprises step C2 and step C3, and step C2 and step C3 are between step C and step e; Step C2 according to the electronic expansion valve opening of current air-conditioner, calculates electronic expansion valve opening compensating value F2 (PMV), and wherein, the span of F2 (PMV) is-3 ℃～3 ℃; Step C3 carries out the coil temperature revisal of outdoor condenser according to the coil temperature Te of the outdoor condenser of current air-conditioner, the compensating value H1 of the coil temperature of counting chamber external condenser, and wherein, the span of H1 is-3 ℃～10 ℃; Outdoor environment temperature To=Te+F (f)+F2 (PMV)+H1 among this moment step D.
Control method also comprises step C1, step C2 and step C3, and step C1, step C2 and step C3 are between step C and step e; Step C1 according to the rotating speed of the current outdoor fan of air-conditioner, calculates outdoor fan compensating value F1 (rpm), and wherein, the span of F1 (rpm) is-5 ℃～5 ℃; Step C2 according to the electronic expansion valve opening of current air-conditioner, calculates electronic expansion valve opening compensating value F2 (PMV), and wherein, the span of F2 (PMV) is-3 ℃～3 ℃; Step C3 carries out the coil temperature revisal of outdoor condenser according to the coil temperature Te of the outdoor condenser of current air-conditioner, the compensating value H1 of the coil temperature of counting chamber external condenser, and wherein, the span of H1 is-3 ℃～10 ℃; Outdoor environment temperature To=Te+F (f)+F1 (rpm)+F2 (PMV)+H1 among this moment step D.
The present invention only adopts a temperature sensor; This temperature sensor is arranged on the outdoor condenser; Just can extrapolate outdoor environment temperature To according to the coil temperature Te of the outdoor condenser in the air-conditioner running and the running frequency of compressor; And can add any in the aperture of rotating speed, electric expansion valve of outdoor fan, and improve the accuracy rate of the reckoning of outdoor environment temperature To.
The present invention has reduced by a temperature sensor with respect to prior art, but but can extrapolate outdoor environment temperature To accurately, and it has simple and reasonable, flexible operation, low, the advantage of wide range of application of cost of manufacture.
Description of drawings
Fig. 1 is the control flow chart of the embodiment of the invention one.
Fig. 2 is the running frequency and the temperature revisal curve map of compressor.
Fig. 3 is the running frequency and the temperature revisal curve of the compressor under the heating mode among the embodiment one.
Fig. 4 is the compressor frequency revisal table under the refrigeration mode among the embodiment two.
Fig. 5 is the outdoor fan rotating speed operation revisal table of air-conditioner.
Fig. 6 is the control flow chart of embodiment two.
Fig. 7 is the control flow chart of embodiment three.
Fig. 8 is the electronic expansion valve opening revisal table of the air-conditioner among the embodiment three.
Fig. 9 is the control flow chart of embodiment four.
Figure 10 is the revisal table of the outdoor condenser coil temperature of the air-conditioner among the embodiment four
Figure 11 is the control flow chart of embodiment five.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Embodiment one
The transducer air conditioning of present embodiment is equipped with the condenser coil temperature sensor on outdoor condenser, do not have installation room external environment temperature sensor, through the coil temperature Te reckoning outdoor environment temperature To of the outdoor condenser of condenser coil temperature sensor sampling.
Referring to Fig. 1, may further comprise the steps during concrete operations:
Steps A, the current running status according to air-conditioner judges whether to forbid carrying out the reckoning of outdoor environment temperature To, when its result when being, get into step e, when its result for not the time, get into step B;
The condition that forbidding in the said steps A carried out the reckoning of outdoor environment temperature To comprises:
It is constant to open the outdoor environment temperature of calculating before the maintenance in a period of time t1 that perhaps stops at the compressor of air-conditioner, and the span of t1 is 0～20 minute; The value of the t1 of present embodiment is 5 minutes;
Perhaps, when the air conditioner heat-production defrost moves or the outdoor environment temperature calculated before keeping in a period of time t2 when finishing of defrost constant, its span of t2 is 0～20 minute; The value of the t2 of present embodiment is 5 minutes;
Perhaps; At the compressor operating of air-conditioner and outdoor fan stops or the outdoor fan wind speed is forbidden carrying out outdoor environment temperature when being lower than N rev/min and calculated; The outdoor environment temperature of calculating before during this period of time keeping is constant, and wherein the span of N is 0～800 rev/min; The value of present embodiment N is 300 rev/mins.
Step B is through the coil temperature Te of the outdoor condenser of condenser coil temperature sensor sampling;
Step C according to the current running frequency f and the current operational mode of air-conditioner of the compressor of air-conditioner, calculates compressor frequency compensating value G=F (f), and wherein F (f) is a compressor frequency revisal formula;
The result of calculation of the compressor frequency revisal formula F (f) among the step C is relevant with the current running frequency f of compressor.
Compressor frequency revisal formula F (f) draws result of calculation through the current running frequency f that inquires about compressor in the position of this form that presets according to the form that presets; Pattern different choice different preset according to the current operation of compressor is decided form; Compressor frequency revisal formula F (f) through the interval that the current running frequency f that confirms compressor belongs to, selects different computing formula to draw result of calculation according to the curve that presets; When the compressor of air-conditioner is out of service, compressor frequency revisal formula F (f)=0, i.e. the coil temperature Te of the outdoor condenser of outdoor environment temperature To=.
The compressor frequency revisal formula F (f) of present embodiment through confirming the interval at the current running frequency f of air-conditioning place, selects different computing formula to draw result of calculation according to the curve that presets.
Referring to Fig. 2, the curve that presets is divided into the n section, according to different computing formula below the current running frequency f selection of compressor;
As f＜f
1The time, F (f)=h1;
Work as f
1≤f＜f
2The time, F (f)=(h2-h1) * (f-f
1)/(f
2-f
1)+h1;
Work as f
2≤f＜f
3The time, F (f)=(h3-h2) * (f-f
2)/(f
3-f
2)+h2;
Work as f
3≤f＜f
4The time, F (f)=(h4-h3) * (f-f
3)/(f
4-f
3)+h3;
......；
Work as f
(n-2)≤f＜f
(n-1)The time, F (f)=(h
(n-1)-h
(n-2)) * (f-f
(n-2))/(f
(n-1)-f
(n-2))+h
(n-2)
Work as f
(n-1)≤f＜f
nThe time, F (f)=(h
n-h
(n-1)) * (f-f
(n-1))/(f
n-f
(n-1))+h
(n-1)
Work as f
nDuring≤f, F (f)=h
n
Wherein,
f
1Be compressor the 1st frequency, f
1Span be 0～60Hz;
f
2Be compressor the 2nd frequency, f
2Span be f
1～80Hz;
f
3Be compressor the 3rd frequency, f
3Span be f
2～100Hz;
f
4Be compressor the 4th frequency, f
4Span be f
3～110Hz;
......；
f
(n-2)Be compressor n-2 frequency, f
(n-2)Span be f
(n-3)～150Hz;
f
(n-1)Be compressor n-1 frequency, f
(n-1)Span be f
(n-2)～160Hz;
f
nBe compressor n frequency, f
nSpan be f
(n-1)～200Hz;
Wherein,
h
1～h
nFor compressor frequency at f
1～f
nThe time the compressor frequency compensating value,
h
1～h
nSpan be-20 ℃～30 ℃, the wherein scope of n is 1～50.
The value of n can not be too big, and too big words can cause the calculating very complicated.
f
1～f
nBe the branch of size, might f
1Greater than f
2, also maybe f
2Greater than f
1
In the present embodiment, this curve that presets is divided into 3 sections, sees Fig. 3, different computing formula below selecting according to the current running frequency of air-conditioning.
As f＜f
1The time, F (f)=h1;
Work as f
1≤f＜f
2The time, F (f)=(h2-h1) * (f-f
1)/(f
2-f
1)+h1;
Work as f
2≤f＜f
3The time, F (f)=(h3-h2) * (f-f
2)/(f
3-f
2)+h2;
Work as f
3≤f＜f
4The time, F (f)=(h4-h3) * (f-f
3)/(f
4-f
3)+h3;
Work as f
4During≤f, F (f)=h4.
F in the present embodiment
1=4Hz, f
2=25Hz, f
3=45Hz, f
4=85Hz.
H1=1 ℃ of compressor frequency compensating value under the heating mode of present embodiment, h2=2 ℃, h3=3.5 ℃, h4=6 ℃.
Step D, counting chamber external environment temperature T o, To=Te+F (f);
Step e withdraws from the reckoning of outdoor environment temperature To.
Below again with model be the heating mode of 35 transducer air conditioning when the current running frequency of compressor is 35Hz, calculate that outdoor environment temperature at that time is an example, do further this control method of explanation again.Judge that at first current compressor opens or whether stopped less than 5 minutes, judge that then whether just in service or defrost finishes in 5 minutes in defrost air-conditioner current, judge again whether the rotating speed of the outdoor fan of air-conditioner is lower than 300 rev/mins; If when below not satisfying, through condenser coil temperature sensor sampling this moment coil temperature Te=25 ℃ of outdoor condenser; Shown in the figure three,, confirm each parameter f in the formula F (f) for another example according to the heating mode of the current operation of air-conditioner
1=4Hz, f
2=25Hz, f
3=45Hz, f
4=85Hz; H1=1 ℃ of compressor frequency compensating value under the heating mode, h2=2 ℃, h3=3.5 ℃, h4=6 ℃; Because of the compressor frequency f=35Hz according to the current operation of air-conditioner, 25Hz＜35Hz＜45Hz is so confirm that the interval at the current running frequency of compressor place is f
2＜f＜f
3, again according to formula F (f)=(h3-h2) * (f-f
2)/(f
3-f
2)+h2=(3.5-2) * (35-25)/(45-25)+2=2.5 ℃; Thereby draw outdoor environment temperature To=Te+2.5 ℃=25+2.5=27.5 ℃.
As stated, this transducer air conditioning has adopted the control method of calculating outdoor environment temperature according to outdoor coil pipe used temperature value, can reduce by a temperature sensor for air-conditioner, has reduced the complete machine cost of air-conditioner, and easy to use.
Embodiment two
The difference of the control method of present embodiment and embodiment one is, in order to calculate the outdoor environment temperature value more accurately, reduces error; And the not same embodiment one of the computational methods of step C, its concrete control method is as shown in Figure 6 among the present embodiment step C, increases step C1, and step C1 is between step C and step e; Step C1 according to the rotating speed of the current outdoor fan of air-conditioner, calculates outdoor fan compensating value F1 (rpm), outdoor environment temperature To=Te+F (the f)+F1 (rpm) among this moment step D; Wherein, the span of F1 (rpm) is-5 ℃～5 ℃.F1 (rpm) is relevant with the rotating speed of outdoor fan.
Rotating speed according to outdoor fan carries out fine tuning outdoor environment temperature: To=Te+F (f)+F1 (rpm); The current running frequency of the result of calculation of wherein said compressor frequency revisal formula F (f) and air-conditioning is relevant; This compressor frequency revisal formula F (f) is according to the form that presets; And the pattern different choice different preset according to the current operation of air-conditioning is decided form; Draw calculating compressor frequency revisal result in the position of this form through the current running frequency f of searching air conditioner, be illustrated in figure 4 as the compressor frequency revisal form under the refrigeration mode; Wherein, Outdoor fan compensating value F1 (rpm) is relevant with the actual running speed of outdoor fan; Be illustrated in figure 5 as the rotation speed of fan compensating value under the refrigeration mode; According to the rotating speed of the current outdoor fan of air-conditioner, confirm the interval at place, table look-up at Fig. 5 according to this interval then and draw current compensating value F1 (rpm).The coil temperature of other outdoor condenser and embodiment one are similar, no longer do further description, thereby extrapolate outdoor environment temperature To=Te+F (f)+F1 (rpm).
Under refrigeration mode; The current running frequency of compressor is f=35Hz; The rotating speed of outdoor fan be 430 rev/mins for example, according to the running frequency f=35Hz of current compressor, tabling look-up from the form of Fig. 4 draws current compressor frequency revisal formula F (f)=-4.5 ℃; Tabling look-up from the form of Fig. 5, to draw current outdoor fan rotating speed compensating value be F1 (rpm)=-0.5 ℃, thereby extrapolate outdoor environment temperature To=Te+F (f)+F1 (rpm)=Te-4.5-0.5=Te-5=25-0.5=20 ℃
As stated, the air-conditioner of present embodiment has increased according to the outdoor fan rotating speed and has carried out fine tuning according to the control method of the coil temperature reckoning outdoor environment temperature of outdoor condenser, makes that the outdoor environment temperature of extrapolating is more accurate.
Embodiment three
Present embodiment is different with the air-conditioner of top two embodiment to be; This air-conditioner according to coil temperature reckoning outdoor environment temperature control method of outdoor condenser has been installed electric expansion valve; In order to calculate the outdoor environment temperature value more accurately; As shown in Figure 7, increased step C2, step C2 is between step C and step e; Step C2 according to the electronic expansion valve opening of current air-conditioner, calculates electronic expansion valve opening compensating value F2 (PMV), at this moment outdoor environment temperature To=Te+F (the f)+F2 (PMV) among the step D; Wherein, the span of F2 (PMV) is-3 ℃～3 ℃.F2 (PMV) is relevant with the number of degrees of the aperture of current electric expansion valve.
Carry out fine tuning outdoor environment temperature: To=Te+F (f)+F2 (PMV) according to electronic expansion valve opening, F2 (PMV) is relevant with the number of degrees of the aperture of current electric expansion valve; As shown in Figure 8; Size according to the electronic expansion valve opening of current system; Judge the interval at current electronic expansion valve opening place, table look-up at Fig. 8 according to this interval then and draw current compensating value F2 (PMV) that the result of calculation and the embodiment one of the coil temperature of other outdoor condenser and formula F (f) are similar; No longer do further description, thereby extrapolate outdoor environment temperature To=Te+F (f)+F2 (PMV).
As stated, the air-conditioner of present embodiment has increased according to electronic expansion valve opening and has carried out fine tuning according to the control method of the coil temperature reckoning outdoor environment temperature of outdoor condenser, makes that the outdoor environment temperature of extrapolating is more accurate.
Embodiment four
Present embodiment is different with the air-conditioner of top three embodiment to be; This air-conditioner of calculating the outdoor environment temperature control method according to coil temperature of outdoor condenser causes during the preliminary frosting of outdoor condenser coil when preventing that air-conditioning system from heating and calculates the outdoor temperature deviation; As shown in Figure 9; Increased step C3, step C3 is between step C and step e; Step C3 carries out the coil temperature revisal of outdoor condenser according to the coil temperature Te of the outdoor condenser of current air-conditioner, outdoor environment temperature To=Te+F (the f)+H1 among the compensating value H1 of the coil temperature of counting chamber external condenser, this moment step D; Wherein, the span of H1 is-3 ℃～10 ℃.
According to the outer coil temperature revisal H1 of the coil temperature Te counting chamber of outdoor condenser, thereby calculate outdoor environment temperature To, To=Te+F (f)+H1; As shown in Figure 9; Size according to the coil temperature Te of the outdoor condenser of current system; Table look-up at Figure 10 according to the coil temperature Te of outdoor condenser then and draw current compensating value H1; The result of calculation and the embodiment one of the coil temperature of other outdoor condenser and formula F (f) are similar, no longer do further description, thereby extrapolate outdoor environment temperature To=Te+F (f)+H1.
As stated; The air-conditioner of present embodiment is calculated the control method of outdoor environment temperature according to the coil temperature of outdoor condenser; Increased according to coil temperature and carried out the temperature revisal according to outdoor condenser, thus the offset issue of the reckoning outdoor environment temperature that causes during the preliminary frosting of resolution system.
Above embodiment two, embodiment three and embodiment four can make up respectively, to improve the precision of calculating.Such as: control method also comprises step C1 and step C2, and step C1 and step C2 are between step C and step e; Step C1 according to the rotating speed of the current outdoor fan of air-conditioner, calculates outdoor fan compensating value F1 (rpm), and wherein, the span of F1 (rpm) is-5 ℃～5 ℃; Step C2 according to the electronic expansion valve opening of current air-conditioner, calculates electronic expansion valve opening compensating value F2 (PMV), and wherein, the span of F2 (PMV) is-3 ℃～3 ℃.Outdoor environment temperature To=Te+F (f)+F1 (rpm)+F2 (PMV) among this moment step D.
Control method also comprises step C1 and step C3, and step C1 and step C3 are between step C and step e; Step C1 according to the rotating speed of the current outdoor fan of air-conditioner, calculates outdoor fan compensating value F1 (rpm), and wherein, the span of F1 (rpm) is-5 ℃～5 ℃; Step C3 carries out the coil temperature revisal of outdoor condenser according to the coil temperature Te of the outdoor condenser of current air-conditioner, the compensating value H1 of the coil temperature of counting chamber external condenser, and wherein, the span of H1 is-3 ℃～10 ℃; Outdoor environment temperature To=Te+F (f)+F1 (rpm)+H1 among this moment step D.
Control method also comprises step C2 and step C3, and step C2 and step C3 are between step C and step e; Step C2 according to the electronic expansion valve opening of current air-conditioner, calculates electronic expansion valve opening compensating value F2 (PMV), and wherein, the span of F2 (PMV) is-3 ℃～3 ℃; Step C3 carries out the coil temperature revisal of outdoor condenser according to the coil temperature Te of the outdoor condenser of current air-conditioner, the compensating value H1 of the coil temperature of counting chamber external condenser, and wherein, the span of H1 is-3 ℃～10 ℃; Outdoor environment temperature To=Te+F (f)+F2 (PMV)+H1 among this moment step D.
Embodiment five
The air-conditioner of present embodiment is different with the air-conditioner of above four embodiment.It has not only installed the coil temperature sensor of outdoor condenser, and the outdoor environment temperature sensor also has been installed simultaneously, only when judging that the appearance of outdoor environment temperature sensor is unusual, calculates outdoor environment temperature according to the coil temperature of outdoor condenser again.When air-conditioner judges that the outdoor environment temperature sensor breaks down, calculate the outdoor environment temperature value according to the coil temperature of outdoor condenser, shown in figure 11, its concrete control method has increased step C1, step C2 and step C3.
Step C1, step C2 and step C3 are between step C and step e; Step C1 according to the rotating speed of the current outdoor fan of air-conditioner, calculates outdoor fan compensating value F1 (rpm), and wherein, the span of F1 (rpm) is-5 ℃～5 ℃; Step C2 according to the electronic expansion valve opening of current air-conditioner, calculates electronic expansion valve opening compensating value F2 (PMV), and wherein, the span of F2 (PMV) is-3 ℃～3 ℃; Step C3 carries out the coil temperature revisal of outdoor condenser according to the coil temperature Te of the outdoor condenser of current air-conditioner, the compensating value H1 of the coil temperature of counting chamber external condenser, and wherein, the span of H1 is-3 ℃～10 ℃; Outdoor environment temperature To=Te+F (f)+F1 (rpm)+F2 (PMV)+H1 among this moment step D.
And its detailed account form and embodiment 1, embodiment 2, embodiment 3 and embodiment 4 are similar, no longer further explain.
As stated; The air-conditioner of present embodiment has adopted the air-conditioner of calculating outdoor environment temperature according to outdoor condenser temperature when the outdoor environment temperature sensor abnormality occurring, can reduce the fault rate of air-conditioner; Thereby reduce the maintenance cost of air-conditioner, reduce user's complaint.Increased simultaneously that step C1 carries out fine tuning according to the outdoor fan rotating speed and step C2 carries out fine tuning according to electronic expansion valve opening; The outdoor environment temperature that feasible reckoning is come out is more accurate; Also increase the coil temperature compensating value of counting chamber external condenser, further reduced the error of the outdoor environment temperature of calculating.
The above embodiment is merely the preferred embodiments of the present invention, is not limited to present embodiment, says to those skilled in the art, and the present invention can have various changes and variation.All any modifications of within spirit of the present invention and principle, being done are equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. control method that adopts outdoor condenser temperature to extrapolate outdoor environment temperature; Air-conditioner is equipped with the condenser coil temperature sensor on outdoor condenser; It is characterized in that calculating outdoor environment temperature To, it is characterized in that may further comprise the steps through the coil temperature Te of the outdoor condenser of condenser coil temperature sensor sampling:
Steps A, the current running status according to air-conditioner judges whether to forbid carrying out the reckoning of outdoor environment temperature To, when its result when being, get into step e, when its result for not the time, get into step B;
Step B is through the coil temperature Te of the outdoor condenser of condenser coil temperature sensor sampling;
Step C according to the current running frequency f and the current operational mode of air-conditioner of the compressor of air-conditioner, calculates compressor frequency compensating value G=F (f), and wherein F (f) is a compressor frequency revisal formula;
Step D, counting chamber external environment temperature T o, To=Te+F (f);
Step e withdraws from the reckoning of outdoor environment temperature To.
2. the outdoor condenser temperature of employing according to claim 1 is extrapolated the control method of outdoor environment temperature, it is characterized in that the condition that forbidding in the said steps A carry out the reckoning of outdoor environment temperature To comprises:
It is constant to open the outdoor environment temperature of calculating before the maintenance in a period of time t1 that perhaps stops at the compressor of air-conditioner, and the span of t1 is 0～20 minute;
Perhaps, when the air conditioner heat-production defrost moves or the outdoor environment temperature calculated before keeping in a period of time t2 when finishing of defrost constant, its span of t2 is 0～20 minute;
Perhaps; At the compressor operating of air-conditioner and outdoor fan stops or the outdoor fan wind speed is forbidden carrying out outdoor environment temperature when being lower than N rev/min and calculated; The outdoor environment temperature of calculating before during this period of time keeping is constant, and wherein the span of N is 0～800 rev/min.
3. the outdoor condenser temperature of employing according to claim 1 is extrapolated the control method of outdoor environment temperature, it is characterized in that the result of calculation of the compressor frequency revisal formula F (f) among the said step C is relevant with the current running frequency f of compressor;
Compressor frequency revisal formula F (f) draws result of calculation through the current running frequency f that inquires about compressor in the position of this form that presets according to the form that presets; Pattern different choice different preset according to the current operation of compressor is decided form;
Compressor frequency revisal formula F (f) through the interval that the current running frequency f that confirms compressor belongs to, selects different computing formula to draw result of calculation according to the curve that presets.
The curve that presets is divided into the n section, according to different computing formula below the current running frequency f selection of compressor;
As f＜f
1The time, F (f)=h1;
Work as f
1≤f＜f
2The time, F (f)=(h2-h1) * (f-f
1)/(f
2-f
1)+h1;
Work as f
2≤f＜f
3The time, F (f)=(h3-h2) * (f-f
2)/(f
3-f
2)+h2;
Work as f
3≤f＜f
4The time, F (f)=(h4-h3) * (f-f
3)/(f
4-f
3)+h3;
......；
Work as f
(n-2)≤f＜f
(n-1)The time, F (f)=(h
(n-1)-h
(n-2)) * (f-f
(n-2))/(f
(n-1)-f
(n-2))+h
(n-2)
Work as f
(n-1)≤f＜f
nThe time, F (f)=(h
n-h
(n-1)) * (f-f
(n-1))/(f
n-f
(n-1))+h
(n-1)
Work as f
nDuring≤f, F (f)=h
n
Wherein,
f
1Be compressor the 1st frequency, f
1Span be 0～60Hz;
f
2Be compressor the 2nd frequency, f
2Span be f
1～80Hz;
f
3Be compressor the 3rd frequency, f
3Span be f
2～100Hz;
f
4Be compressor the 4th frequency, f
4Span be f
3～110Hz;
......；
f
(n-2)Be compressor n-2 frequency, f
(n-2)Span be f
(n-3)～150Hz;
f
(n-1)Be compressor n-1 frequency, f
(n-1)Span be f
(n-2)～160Hz;
f
nBe compressor n frequency, f
nSpan be f
(n-1)～200Hz;
h
1～h
nFor compressor frequency at f
1～f
nThe time the compressor frequency compensating value,
h
1～h
nSpan be-20 ℃～30 ℃; The wherein scope of n is 1～50.
4. the outdoor condenser temperature of employing according to claim 1 is extrapolated the control method of outdoor environment temperature; It is characterized in that when the compressor of air-conditioner is out of service; Compressor frequency revisal formula F (f)=0, i.e. the coil temperature Te of the outdoor condenser of outdoor environment temperature To=.
5. the outdoor condenser temperature of employing according to claim 1 is extrapolated the control method of outdoor environment temperature, it is characterized in that also comprising step C1, and step C1 is between step C and step e;
Step C1 according to the rotating speed of the current outdoor fan of air-conditioner, calculates outdoor fan compensating value F1 (rpm), outdoor environment temperature To=Te+F (the f)+F1 (rpm) among this moment step D; Wherein, the span of F1 (rpm) is-5 ℃～5 ℃.
6. the outdoor condenser temperature of employing according to claim 1 is extrapolated the control method of outdoor environment temperature, it is characterized in that also comprising step C2, and step C2 is between step C and step e;
Step C2 according to the electronic expansion valve opening of current air-conditioner, calculates electronic expansion valve opening compensating value F2 (PMV), at this moment outdoor environment temperature To=Te+F (the f)+F2 (PMV) among the step D; Wherein, the span of F2 (PMV) is-3 ℃～3 ℃.
7. the outdoor condenser temperature of employing according to claim 1 is extrapolated the control method of outdoor environment temperature, it is characterized in that also comprising step C3, and step C3 is between step C and step e;
Step C3 carries out the coil temperature revisal of outdoor condenser according to the coil temperature Te of the outdoor condenser of current air-conditioner, outdoor environment temperature To=Te+F (the f)+H1 among the compensating value H1 of the coil temperature of counting chamber external condenser, this moment step D; Wherein, the span of H1 is-3 ℃～10 ℃.
8. the outdoor condenser temperature of employing according to claim 1 is extrapolated the control method of outdoor environment temperature, it is characterized in that also comprising step C1 and step C2, and step C1 and step C2 are between step C and step e;
Step C1 according to the rotating speed of the current outdoor fan of air-conditioner, calculates outdoor fan compensating value F1 (rpm), and wherein, the span of F1 (rpm) is-5 ℃～5 ℃;
Step C2 according to the electronic expansion valve opening of current air-conditioner, calculates electronic expansion valve opening compensating value F2 (PMV), and wherein, the span of F2 (PMV) is-3 ℃～3 ℃.
Outdoor environment temperature To=Te+F (f)+F1 (rpm)+F2 (PMV) among this moment step D.
9. the outdoor condenser temperature of employing according to claim 1 is extrapolated the control method of outdoor environment temperature, it is characterized in that also comprising step C1 and step C3, and step C1 and step C3 are between step C and step e;
Step C1 according to the rotating speed of the current outdoor fan of air-conditioner, calculates outdoor fan compensating value F1 (rpm), and wherein, the span of F1 (rpm) is-5 ℃～5 ℃;
Step C3 carries out the coil temperature revisal of outdoor condenser according to the coil temperature Te of the outdoor condenser of current air-conditioner, the compensating value H1 of the coil temperature of counting chamber external condenser, and wherein, the span of H1 is-3 ℃～10 ℃;
Outdoor environment temperature To=Te+F (f)+F1 (rpm)+H1 among this moment step D.
10. the outdoor condenser temperature of employing according to claim 1 is extrapolated the control method of outdoor environment temperature, it is characterized in that also comprising step C2 and step C3, and step C2 and step C3 are between step C and step e;
Step C2 according to the electronic expansion valve opening of current air-conditioner, calculates electronic expansion valve opening compensating value F2 (PMV), and wherein, the span of F2 (PMV) is-3 ℃～3 ℃;
Step C3 carries out the coil temperature revisal of outdoor condenser according to the coil temperature Te of the outdoor condenser of current air-conditioner, the compensating value H1 of the coil temperature of counting chamber external condenser, and wherein, the span of H1 is-3 ℃～10 ℃;
Outdoor environment temperature To=Te+F (f)+F2 (PMV)+H1 among this moment step D.
11. the outdoor condenser temperature of employing according to claim 1 is extrapolated the control method of outdoor environment temperature, it is characterized in that also comprising step C1, step C2 and step C3, step C1, step C2 and step C3 are between step C and step e;
Step C1 according to the rotating speed of the current outdoor fan of air-conditioner, calculates outdoor fan compensating value F1 (rpm), and wherein, the span of F1 (rpm) is-5 ℃～5 ℃;
Step C2 according to the electronic expansion valve opening of current air-conditioner, calculates electronic expansion valve opening compensating value F2 (PMV), and wherein, the span of F2 (PMV) is-3 ℃～3 ℃;
Step C3 carries out the coil temperature revisal of outdoor condenser according to the coil temperature Te of the outdoor condenser of current air-conditioner, the compensating value H1 of the coil temperature of counting chamber external condenser, and wherein, the span of H1 is-3 ℃～10 ℃;
Outdoor environment temperature To=Te+F (f)+F1 (rpm)+F2 (PMV)+H1 among this moment step D.
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| CN2011104358341A CN102538136A (en) | 2011-12-22 | 2011-12-22 | Control method for calculating outdoor environmental temperature by adopting temperature of outdoor condenser |
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Application publication date: 20120704 |