CN103791585B - The control method of the outer blower fan of a kind of cabinet air conditioner direct current - Google Patents
The control method of the outer blower fan of a kind of cabinet air conditioner direct current Download PDFInfo
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- CN103791585B CN103791585B CN201410021294.6A CN201410021294A CN103791585B CN 103791585 B CN103791585 B CN 103791585B CN 201410021294 A CN201410021294 A CN 201410021294A CN 103791585 B CN103791585 B CN 103791585B
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Abstract
<b> the invention discloses the control method of the outer blower fan of a kind of cabinet air conditioner direct current, comprise: initialize the outer rotation speed of fan of direct current, and after keeping the </b><bGreatT.Gre aT.GTn</b><bGrea tT.GreaT.GT time, detect condenser middle portion temperature </b><bGreatT.Gre aT.GTTc</b><bGre atT.GreaT.GT, (</b><bGreatT.Gre aT.GT1</b><bGrea tT.GreaT.GT) is as </b><bGreatT.Gre aT.GTTc & gt, Tcm</b><bGreatT. GreaT.GT, rotating speed rises and controls, as </b><bGreatT.Gre aT.GTTc</b><bGre atT.GreaT.GT≤</b><bGreatT.Gre aT.GTT1</b><bGre atT.GreaT.GT, close the outer blower fan of direct current, as </b><bGreatT.Gre aT.GTT1 & lt, Tc & lt, during T2</b><bGreatT.G reaT.GT, and the outer rotation speed of fan ψ=</b><bGreatT.Gre aT.GT of direct current [</b><bGreatT.Gre aT.GT(</b><bGrea tT.GreaT.GTTc-Td</b>LEssT.LTs sT.LTb>) </b><bGreatT.Gre aT.GT*a+b] * 100%</b><bGreatT .GreaT.GT, as </b><bGreatT.Gre aT.GTTc</b><bGre atT.GreaT.GT >=</b><bGreatT.Gre aT.GTT2</b><bGre atT.GreaT.GT, the outer blower fan full speed running of direct current, (</b><bGreatT.Gre aT.GT2</b><bGrea tT.GreaT.GT), as </b><bGreatT.Gre aT.GTTc</b><bGre atT.GreaT.GT≤</b><bGreatT.Gre aT.GTTcm</b><bGr eatT.GreaT.GT, rotating speed declines and controls, as </b><bGreatT.Gre aT.GTTc</b><bGre atT.GreaT.GT≤</b><bGreatT.Gre aT.GTT1-T0</b><b >, close the outer blower fan of direct current, as </b><bGreatT.Gre aT.GTT1-T0 & lt, Tc & lt, during T2-T0</b><bGreat T.GreaT.GT, and the outer rotation speed of fan ψ=</b><bGreatT.Gre aT.GT of direct current [</b><bGreatT.Gre aT.GT(</b><bGrea tT.GreaT.GTTc-Td</b>LEssT.LTs sT.LTb>) </b><bGreatT.Gre aT.GT*a+b] * 100%</b><bGreatT .GreaT.GT, as </b><bGreatT.Gre aT.GTTc</b><bGre atT.GreaT.GT >=</b><bGreatT.Gre aT.GTT2-T0</b><b >, the outer blower fan full speed running of direct current, control method of the present invention makes air-conditioning refrigeration system reach efficient, reliable, energy-conservation and low noise runs.</b>
Description
Technical field
the present invention relates to a kind of technical field of air conditioner refrigeration, the control method of the outer blower fan of especially a kind of cabinet air conditioner direct current.
Background technology
along with the development of Communication in China industry, cabinet air conditioner is widely used in Miniature communication base station as Local cooling, but the outer blower fan of existing product uses AC blower fan usually, rotating speed cannot regulate, only having standard-sized sheet and stop two kinds of operational modes, is just that some products employ DC fan, and its rotating speed control mode is general only to be carried out associating with outdoor environment temperature and control, outdoor environment temperature height rotation speed of fan is high, and the low rotation speed of fan of outdoor environment temperature is also low; This type of air-blower control mode can not detect the running status of refrigeration system well, such as, when when condenser, because there is more serious dirty blocking up, heat transfer effect is poor, this type of air-blower control mode cannot improve rotation speed of fan and strengthen heat exchange, finally cause system to reduce service life because of long-term overlond running, even may cause compressor damage.And the control mode of the outer blower fan of existing direct current cannot ensure refrigerant system components Effec-tive Function owing to cannot detect the running status of refrigeration system in real time, can not meet the aim that country calls energy-saving and emission-reduction.Therefore, be badly in need of the control method proposing the outer blower fan of a kind of direct current, realize cabinet air conditioner high efficient and reliable and run.
Summary of the invention
the present invention seeks to: the control method that the outer blower fan of a kind of efficient, reliable, energy-conservation and cabinet air conditioner direct current of low noise is provided.
technical scheme of the present invention is: the control method of the outer blower fan of a kind of cabinet air conditioner direct current, and the outer blower fan of this direct current adopts can the outer blower fan of direct current of linear speed regulation, and it is characterized in that, the control method of its rotating speed comprises:
initialize the outer rotation speed of fan of direct current, and after keeping the n time, detect condenser middle portion temperature Tc;
(1) work as Tc>Tcm, rotating speed rises and controls;
as Tc≤T1, illustrate that now condenser heat dissipation capacity is little, be not less than the minimum pressure at expulsion required by compressor stable operation in order to ensure condensing pressure, consider energy-conservation and quiet operation simultaneously, close the outer blower fan of direct current;
as T1<Tc<T2, in order to ensure that air-conditioning system is in the most efficient running status all the time, and consider to adopt etiquette mode to run, the rotating speed of the outer blower fan of direct current is regulated in real time, now rotating speed ψ=[(Tc-Td) * a+b] * 100% according to the actual load of condenser;
as Tc>=T2, illustrate that now condenser duty is very large, needs to strengthen its heat exchange amount, therefore need the outer blower fan full speed running of direct current, ensure that condensing pressure does not exceed the highest pressure at expulsion of compressor stable operation requirement;
(2) as Tc≤Tcm, rotating speed declines and controls;
as Tc≤T1-T0, illustrate that now condenser heat dissipation capacity is little, be not less than the minimum pressure at expulsion required by compressor stable operation in order to ensure condensing pressure, consider energy-conservation and quiet operation simultaneously, close the outer blower fan of direct current;
as T1-T0<Tc<T2-T0, in order to ensure that air-conditioning system is in the most efficient running status all the time, and consider to adopt etiquette mode to run, the rotating speed of the outer blower fan of direct current is regulated in real time, now rotating speed ψ=[(Tc-Td) * a+b] * 100% according to the actual load of condenser;
as Tc>=T2-T0, illustrate that now condenser duty is very large, needs to strengthen its heat exchange amount, therefore need the outer blower fan full speed running of direct current, ensure that condensing pressure does not exceed the highest pressure at expulsion of compressor stable operation requirement;
wherein Tcm is the condenser middle portion temperature before the m time; The T1 saturation temperature that minimum pressure at expulsion is corresponding needed for compressor; The T2 saturation temperature that the highest pressure at expulsion is corresponding needed for compressor; Td is under metric system cold test operating mode, condenser middle portion temperature corresponding when the outer rotation speed of fan of direct current is 80% of maximum (top) speed; A and b is corrected parameter; T0 is the temperature return difference value that rotating speed controls.
preferably, relevant physical parameter smooth change during in order to ensure that refrigeration system starts, especially pressure at expulsion vibration is little, the initial speed setting the outer blower fan of described direct current is ψ s, and conveniently the state before refrigeration system starts is predicted and associated with condenser middle portion temperature Tc by initial speed, when Tc>45 DEG C, ψ s is the outer blower fan maximum (top) speed ψ max of direct current 70% ~ 80%; When 25 DEG C of <Tc≤45 DEG C, ψ s is 50% ~ 60% of the outer blower fan maximum (top) speed ψ max of direct current; When Tc≤25 DEG C, ψ s is 30 ~ 40% of the outer blower fan maximum (top) speed ψ max of direct current; And n=3mins.
preferably, corrected parameter a and b is under the multiple operating condition of test, setting the outer rotation speed of fan of different direct currents makes refrigeration system be in the most efficient running status, and record condenser middle portion temperature now, by the matching to the optimum speed recorded under different operating mode and condenser middle portion temperature data, obtain the value of parameter a and b, and a=0.01 ~ 0.04, b=0.5 ~ 0.9.
preferably, T0 is 5 ~ 10 DEG C.
more preferably, in order to the running status of Real-Time Monitoring air-conditioning refrigeration system, the sense cycle that the outer rotation speed of fan of described direct current controls is the m time, m=1 ~ 2mins.
advantage of the present invention is: control method of the present invention mainly comprises rotating speed rising and controls and rotating speed decline control, and this rotating speed rises and to control and rotating speed decline control includes direct current exogenous wind office and closes, regulates blower fan full speed running three kinds of control modes outside the outer blower fan of direct current and direct current in real time, and regulated by the rotating speed detecting in real time the external blower fan of condenser middle portion temperature, reach efficient, reliable, the energy-conservation and low noise of air-conditioning refrigeration system and run.
Accompanying drawing explanation
below in conjunction with drawings and Examples, the invention will be further described:
fig. 1 is the control method flow chart of the outer blower fan of cabinet air conditioner direct current of the present invention.
Detailed description of the invention
should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
embodiment: with reference to shown in Fig. 1, the control method of the outer blower fan of a kind of cabinet air conditioner direct current, the outer blower fan of this direct current adopts can the outer blower fan of direct current of linear speed regulation, and the control method of its rotating speed comprises:
first open air-conditioning refrigeration system, detect condenser middle portion temperature Tc, initialize the outer rotation speed of fan of direct current according to the condenser middle portion temperature Tc detected, and keep the 3mins time, again detect condenser middle portion temperature Tc; Minimum and the highest pressure at expulsion that the present embodiment requires when considering compressor stable operation also guarantees air-conditioning refrigeration system safe and reliable operation, gets T1=25 DEG C, T2=55 DEG C.
(1) when the condenser middle portion temperature that Tc>Tcm(Tcm was before the 1mins time) rotating speed rising control;
when Tc≤25 DEG C, illustrate that now condenser heat dissipation capacity is little, be not less than the minimum pressure at expulsion required by compressor stable operation in order to ensure condensing pressure, consider energy-conservation and quiet operation simultaneously, close the outer blower fan of direct current;
as 25 DEG C of <Tc<55 DEG C, in order to ensure that air-conditioning system is in the most efficient running status all the time, and consider to adopt etiquette mode to run, the rotating speed of the outer blower fan of direct current is regulated in real time, now rotating speed ψ=[(Tc-Td) * a+b] * 100% according to the actual load of condenser;
when Tc>=55 DEG C, illustrate that now condenser duty is very large, needs to strengthen its heat exchange amount, therefore need the outer blower fan full speed running of direct current, ensure that condensing pressure does not exceed the highest pressure at expulsion of compressor stable operation requirement;
(2) as Tc≤Tcm, rotating speed declines and controls;
guarantee that outer blower fan is too not frequent to close or full speed running, the present embodiment Selecting All Parameters T0=8 DEG C.
when Tc≤17 DEG C, illustrate that now condenser heat dissipation capacity is little, be not less than the minimum pressure at expulsion required by compressor stable operation in order to ensure condensing pressure, consider energy-conservation and quiet operation simultaneously, close the outer blower fan of direct current;
as 17 DEG C of <Tc<47 DEG C, in order to ensure that air-conditioning system is in the most efficient running status all the time, and consider to adopt etiquette mode to run, the rotating speed of the outer blower fan of direct current is regulated in real time, now rotating speed ψ=[(Tc-Td) * a+b] * 100% according to the actual load of condenser;
when Tc>=47 DEG C, illustrate that now condenser duty is very large, needs to strengthen its heat exchange amount, therefore need the outer blower fan full speed running of direct current, ensure that condensing pressure does not exceed the highest pressure at expulsion of compressor stable operation requirement;
wherein Td is under metric system cold test operating mode, condenser middle portion temperature when the outer rotation speed of fan of setting direct current is 80%, Td=45 DEG C in the present embodiment; Wherein coefficient a and b is under the multiple outdoor environment temperature of test, the outer rotation speed of fan of direct current is regulated to make refrigeration system be in optimum efficiency operational mode, the outer rotation speed of fan of record direct current now and condenser middle portion temperature, draw by carrying out matching to related data, as relative recording data under the measurement condition of following table:
| Outdoor environment temperature (DEG C) | Outer rotation speed of fan | Actual measurement condensation temperature (DEG C) |
| 15 | 38% | 24.5 |
| 18 | 45% | 27.6 |
| 21 | 55% | 32.4 |
| 24 | 57% | 33.5 |
| 27 | 65% | 38.1 |
| 30 | 70% | 40.5 |
| 33 | 78% | 43.9 |
| 36 | 82% | 45.8 |
| 39 | 90% | 50.1 |
a=0.02 is drawn, b=0.8 by carrying out matching to above data.
relevant physical parameter smooth change during in order to ensure that refrigeration system starts, especially pressure at expulsion vibration is little, the initial speed setting the outer blower fan of described direct current is ψ s, and conveniently the state before refrigeration system starts is predicted and associated with condenser middle portion temperature Tc by initial speed, when Tc>45 DEG C, ψ s is the outer blower fan maximum (top) speed ψ max of direct current 70% ~ 80%; When 25 DEG C of <Tc≤45 DEG C, ψ s is 50% ~ 60% of the outer blower fan maximum (top) speed ψ max of direct current; When Tc≤25 DEG C, ψ s is 30 ~ 40% of the outer blower fan maximum (top) speed ψ max of direct current; And n=3mins.
in order to the running status of Real-Time Monitoring air-conditioning refrigeration system, the sense cycle m that the present embodiment China and foreign countries rotation speed of fan controls is 1mins.
the above, be only the detailed description of the invention of invention.Protection scope of the present invention is not limited thereto, and is anyly familiar with those skilled in the art in the technical scope that the present invention discloses, the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should define with claim is as the criterion.
Claims (5)
1. a control method for the outer blower fan of cabinet air conditioner direct current, the outer blower fan of this direct current adopts can the outer blower fan of direct current of linear speed regulation, and it is characterized in that, the control method of its rotating speed comprises:
Initialize the outer rotation speed of fan of direct current, and after keeping the n time, detect condenser middle portion temperature Tc;
(1) work as Tc>Tcm, rotating speed rises and controls;
As Tc≤T1, close the outer blower fan of direct current; As T1<Tc<T2, outer rotation speed of fan ψ=[(Tc-Td) * a+b] the * 100%* ψ max of direct current; As Tc >=T2, the outer blower fan full speed running of direct current;
(2) as Tc≤Tcm, rotating speed declines and controls;
As Tc≤T1-T0, close the outer blower fan of direct current; As T1-T0<Tc<T2-T0, outer rotation speed of fan ψ=[(Tc-Td) * a+b] the * 100%* ψ max of direct current; As Tc >=T2-T0, the outer blower fan full speed running of direct current;
Wherein ψ max is the outer blower fan maximum (top) speed of direct current; Tcm is the condenser middle portion temperature before the m time; The T1 saturation temperature that minimum pressure at expulsion is corresponding needed for compressor; The T2 saturation temperature that the highest pressure at expulsion is corresponding needed for compressor; Td is under metric system cold test operating mode, condenser middle portion temperature corresponding when the outer rotation speed of fan of direct current is 80% of maximum (top) speed; A and b is corrected parameter; T0 is the temperature return difference value that rotating speed controls.
2. the control method of the outer blower fan of cabinet air conditioner direct current according to claim 1, is characterized in that, the initial speed of the outer blower fan of described direct current is ψ s, when Tc>45 DEG C, ψ s is 70% ~ 80% of the outer blower fan maximum (top) speed ψ max of direct current; When 25 DEG C of <Tc≤45 DEG C, ψ s is 50% ~ 60% of the outer blower fan maximum (top) speed ψ max of direct current; When Tc≤25 DEG C, ψ s is 30 ~ 40% of the outer blower fan maximum (top) speed ψ max of direct current; And n=3min.
3. the control method of the outer blower fan of cabinet air conditioner direct current according to claim 1, is characterized in that, a=0.01 ~ 0.04, b=0.5 ~ 0.9.
4. the control method of the outer blower fan of cabinet air conditioner direct current according to claim 1, it is characterized in that, T0 is 5 ~ 10 DEG C.
5. the control method of the outer blower fan of the cabinet air conditioner direct current according to any one of Claims 1-4, is characterized in that, the sense cycle that the outer rotation speed of fan of described direct current controls is the m time, m=1 ~ 2min.
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| CN105240987A (en) * | 2014-07-08 | 2016-01-13 | 青岛海尔空调器有限总公司 | Air conditioner and pressure relief control circuit and method thereof |
| CN104748326A (en) * | 2015-03-17 | 2015-07-01 | 广东申菱空调设备有限公司 | Chilled water precision air conditioner and energy-conservation control method thereof |
| WO2017163296A1 (en) * | 2016-03-22 | 2017-09-28 | 三菱電機株式会社 | Refrigeration device |
| CN106091298B (en) * | 2016-08-19 | 2020-03-06 | 广东美的暖通设备有限公司 | Control method and control device of air conditioner and air conditioner |
| CN107062542B (en) * | 2017-04-07 | 2019-08-30 | 广东美的暖通设备有限公司 | Air-conditioning system and its control method of outdoor fan, device |
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| CN107906682B (en) * | 2017-11-03 | 2020-07-14 | 广东美的暖通设备有限公司 | Control method and device of air conditioning system and air conditioner |
| CN111023393A (en) * | 2019-11-15 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Control method and system of outdoor fan and air conditioner |
| CN111750506A (en) * | 2020-07-06 | 2020-10-09 | 深圳市英维克科技股份有限公司 | Control system and control method of condensing fan |
| CN114061067A (en) * | 2020-08-07 | 2022-02-18 | 美的集团股份有限公司 | Wind gear adjusting method, air conditioner and storage medium |
| CN114754475A (en) * | 2022-05-20 | 2022-07-15 | 深圳市英维克科技股份有限公司 | Air conditioner operation control method, operation device, air conditioner and storage medium |
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