CN102331072B - Energy-saving control method for air conditioner with double-mode double-rotor variable frequency compressor - Google Patents
Energy-saving control method for air conditioner with double-mode double-rotor variable frequency compressor Download PDFInfo
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- CN102331072B CN102331072B CN201110280299.7A CN201110280299A CN102331072B CN 102331072 B CN102331072 B CN 102331072B CN 201110280299 A CN201110280299 A CN 201110280299A CN 102331072 B CN102331072 B CN 102331072B
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Abstract
The invention discloses an energy-saving control method for an air conditioner with a double-mode double-rotor variable frequency compressor. The compressor has a double-cylinder variable frequency working mode and a single-cylinder variable frequency working mode. The method comprises the following steps of: starting the air conditioner; keeping the compressor in the double-cylinder variable frequency working mode; after operating the compressor for time T at the lowest operation frequency A, switching the compressor from the double-cylinder variable frequency working mode to the single-cylinder variable frequency working mode, wherein the operation frequency of the compressor is greater than the limiting frequency; and switching the compressor from the single-cylinder variable frequency working mode to the double-cylinder variable frequency working mode. When the air conditioner is just started, the compressor is in the double-cylinder variable frequency working mode and operates at high frequency to achieve a quick refrigeration effect; and after indoor temperature is close to a set value, the compressor is switched into the single-cylinder variable frequency working mode, so that the refrigerating output is reduced to fulfill the aim of keeping the indoor temperature, the compressor is kept to continuously operate, the stop frequency and the starting frequency of the compressor are reduced, and the energy conservation effect is achieved.
Description
Technical field
The present invention relates to a kind of air-conditioner, specifically a kind of energy-saving control method with the double-mode double-rotor variable frequency compressor air-conditioner.
Background technology
After the traditional frequency conversion air-conditioner is opened refrigeration mode, thermic load variation in temperature variation curve and room in room, as shown in Figure 1, wherein the x axle is the transducer air conditioning opening time, the y axle is indoor temperature, and in figure, curve is temperature variation curve in room, the refrigerating capacity that dash area is transducer air conditioning.In the 0-t1 section time after transducer air conditioning is opened refrigeration, because temperature in room is higher, transducer air conditioning needs fast-refrigerating that indoor temperature is reduced, through t1 after the time, indoor temperature approaches the temperature that the user sets, and transducer air conditioning only need maintain the thermal balance in room afterwards, temperature is remained on to the temperature that the user sets and get final product, now the thermic load in room is mainly from human body, electrical equipment etc., and the non-airtight caused thermal convection current fully in room.
Traditional transducer air conditioning, according to the variation of Indoor Thermal load, is adjusted the refrigeration output quantity automatically, and within the 0-t1 section time, air-conditioner is with higher running frequency operation, to obtain larger refrigerating capacity; At t1 after the time, air-conditioner is with lower running frequency operation, to obtain less refrigerating capacity, if when the refrigerating capacity of output still is greater than the constant needed temperature of Current Temperatures maintained in room when air-conditioner moves with minimum frequency, stop compressor operating to stop refrigeration.Again open compressor cooling when temperature rises in room, but, when compressor starts again, often need large electric current to produce staring torque.Therefore, the intermitten operation of compressor causes energy waste, not energy-conservation.Therefore, require further improvement.
Summary of the invention
It is reasonable that purpose of the present invention aims to provide a kind of simplicity of design, safe and reliable, and energy consumption is low, and the energy-saving control method with the double-mode double-rotor variable frequency compressor air-conditioner of good refrigeration effect, to overcome weak point of the prior art.
The energy-saving control method with the double-mode double-rotor variable frequency compressor air-conditioner by this purpose design, described compressor has twin-tub variable frequency work pattern and single cylinder variable frequency work pattern, it is characterized in that by judgement compressor operating frequency, running time, outdoor environment temperature, outdoor condenser temperature and indoor evaporator temperature, carry out twin-tub variable frequency work pattern and the switching of single cylinder variable frequency work pattern, the steps include:
Step 1, air-conditioner start, and the user sets operational mode instruction and the temperature instruction of air-conditioner;
Step 2, compressor are twin-tub variable frequency work pattern, and indoor set is calculated refrigeration or dehumidifier or heats demand according to indoor environment temperature, thus calculating compressor operating frequency instruction value F, and be sent to off-premises station; After off-premises station receives compressor operating frequency instruction value F, running frequency command value F and system minimum operation frequency A are compared, if F >=A, compressor is with running frequency command value F operation, if F<A, compressor moves with minimum operation frequency A;
Step 3, compressor with minimum operation frequency A running time T after, compressor transfers single cylinder variable frequency work pattern to by twin-tub variable frequency work pattern;
Step 4, indoor set are sent to off-premises station to required compressor operating frequency instruction value F, after off-premises station is received compressor operating frequency instruction value F, 2 times of running frequency command value F, be that 2*F and minimum operation frequency A compare, if 2*F<A, compressor is with minimum operation frequency A operation, if 2*F >=A, compressor is with 2 times of running frequency command value F, and 2*F moves;
Step 5, compressor operating frequency 2*F>limit frequency B, compressor transfers twin-tub variable frequency work pattern to by single cylinder variable frequency work pattern.
Described minimum operation frequency A is compressor lowest reliable running frequency, and its span is 1-10Hz.
Described time T is the time of room thermic load that still meets after compressor moves with minimum operation frequency A, and its span is 1-15 minute.
Described limit frequency B is 2 times of minimum operation frequency A, and its span is 2-20Hz.
Air-conditioner of the present invention adopts double-mode double-rotor variable frequency compressor, and two rotors in it have independently cylinder, and compressor can be worked by two cylinders together, it is twin-tub variable frequency work pattern, also can close one of them cylinder, only stay a cylinder operation, i.e. single cylinder variable frequency work pattern.In a period of time of just having opened at air-conditioner, compressor is twin-tub variable frequency work pattern, moves to reach the purpose of fast-refrigerating by high-frequency, makes indoor temperature approach as early as possible setting value.When indoor temperature approaches settings, compressor switches to single cylinder variable frequency work pattern, by closing one of them cylinder, reduce refrigerating capacity to reach the purpose that keeps indoor temperature, and keep the compressor continuous service, and reduce the frequency that compressor stops, opening, reach energy-conservation purpose.It is reasonable that it has simplicity of design, safe and reliable, and energy consumption is low, the characteristics of good refrigeration effect.
The accompanying drawing explanation
Fig. 1 is that the traditional frequency conversion air-conditioner is opened refrigeration mode room temperature change curve and air-conditioner interrupter duty schematic diagram.
The air-conditioner that Fig. 2 is one embodiment of the invention is opened refrigeration mode room temperature change curve and air-conditioner continuous operation schematic diagram.
The working condition chart of the twin-tub variable frequency work pattern that Fig. 3 is an embodiment compressor.
The working condition chart of the single cylinder variable frequency work pattern that Fig. 4 is an embodiment compressor.
The control flow chart of the air-conditioner that Fig. 5 is an embodiment.
The specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Referring to Fig. 2-Fig. 5, with the energy-saving control method of double-mode double-rotor variable frequency compressor air-conditioner, compressor has twin-tub variable frequency work pattern and single cylinder variable frequency work pattern, and the step of described energy-saving control method under cooling condition is:
Step 1, air-conditioner start, and it is running refrigerating pattern and temperature C that the user sets air-conditioner;
Step 2, compressor are twin-tub variable frequency work pattern, and indoor set is calculated refrigeration demand according to indoor environment temperature, thereby calculate compressor operating frequency instruction value F, and are sent to off-premises station; After off-premises station receives compressor operating frequency instruction value F, running frequency command value F and system minimum operation frequency A are compared, if F >=A, compressor is with running frequency command value F operation, if F<A, compressor moves with minimum operation frequency A.
Described minimum operation frequency A is compressor lowest reliable running frequency, and its span is 1-10Hz, and in the present embodiment, minimum operation frequency A is 1Hz, if F >=1Hz, with command value F operation, if F<1Hz moves with minimum operation frequency 1Hz.
Off-premises station according to the load beyond compressor actual motion frequency computation part compressor, comprises outdoor wind speed, expansion valve opening (if system has expansion valve) etc. simultaneously.Simultaneously, off-premises station by compressor actual motion frequency feedback to indoor set, after indoor set receives compressor of outdoor unit actual motion frequency, calculate indoor air velocity according to one or more combinations in following three conditions: (1) compressor actual motion frequency, (2) the command value F that indoor set calculates, the wind speed that (3) user's indoor set is set.
Step 3, compressor be with minimum operation frequency A, i.e. 1Hz, and after running time T, compressor transfers single cylinder variable frequency work pattern to by twin-tub variable frequency work pattern.
Described time T is the time of room thermic load that still meets after compressor moves with minimum operation frequency A, and its span is 1-15 minute, and the present embodiment is preferably 10 minutes.
Step 4, indoor set are sent to off-premises station to required compressor operating frequency instruction value F, after off-premises station is received compressor operating frequency instruction value F, 2 times of running frequency command value F, be that 2*F and minimum operation frequency A compare, if 2*F<A, compressor is with minimum operation frequency A operation, if 2*F >=A, compressor is with 2 times of running frequency command value F, and 2*F moves;
Off-premises station calculates compressor load in addition according to 1/2 value of compressor actual motion frequency simultaneously, comprises outdoor wind speed, expansion valve opening (if system has expansion valve) etc.Simultaneously, off-premises station feeds back to indoor set by 1/2 value of compressor actual motion frequency, after indoor set receives compressor of outdoor unit actual motion frequency 1/2 value, calculate indoor air velocity according to one or more combinations in following three conditions: 1/2 value of (1) compressor actual motion frequency, (2) the command value F that indoor set calculates, the wind speed that (3) user's indoor set is set.
Step 5, compressor operating frequency 2*F>limit frequency B, compressor transfers twin-tub variable frequency work pattern to by single cylinder variable frequency work pattern, so circulation.
Described limit frequency B is 2 times of minimum operation frequency A, be that its span is 2-20Hz, in the present embodiment, limit frequency B is 20Hz accordingly, and, when the compressor operating frequency is greater than 2Hz, compressor transfers twin-tub variable frequency work pattern to by single cylinder variable frequency work pattern.
The power and the refrigerating capacity that under the electric energy consumed during running frequency 1Hz under compressor list cylinder operation mode and refrigerating capacity and two cylinder operation mode, consume during 0.5Hz are basic identical.Under this control method, under the condition that does not change compressor actual motion frequency and system reliability, can reduce the consumed power of half, thereby reduce the number of times that cooler compressor stops, opening, thereby reach energy-conservation purpose.
The above embodiment is only the preferred embodiments of the present invention, is not limited to the present embodiment, says for those skilled in the art, and the present invention can have various modifications and variations.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. the energy-saving control method with the double-mode double-rotor variable frequency compressor air-conditioner, described compressor has twin-tub variable frequency work pattern and single cylinder variable frequency work pattern, it is characterized in that by judgement compressor operating frequency, running time, outdoor environment temperature, outdoor condenser temperature and indoor evaporator temperature, carry out twin-tub variable frequency work pattern and the switching of single cylinder variable frequency work pattern, the steps include:
Step 1, air-conditioner start, and the user sets operational mode instruction and the temperature instruction of air-conditioner;
Step 2, compressor are twin-tub variable frequency work pattern, and indoor set is calculated refrigeration or dehumidifier or heats demand according to indoor environment temperature, thus calculating compressor operating frequency instruction value F, and be sent to off-premises station; After off-premises station receives compressor operating frequency instruction value F, running frequency command value F and system minimum operation frequency A are compared, if F >=A, compressor is with running frequency command value F operation, if F<A, compressor moves with minimum operation frequency A;
Step 3, compressor with minimum operation frequency A running time T after, compressor transfers single cylinder variable frequency work pattern to by twin-tub variable frequency work pattern;
Step 4, compressor are single cylinder variable frequency work pattern, indoor set is calculated refrigeration or dehumidifier or heats demand according to indoor environment temperature, thereby calculate compressor operating frequency instruction value F, and be sent to off-premises station, 2 times of running frequency command value F, be that 2*F and minimum operation frequency A compare, if 2*F<A, compressor is with minimum operation frequency A operation, if 2*F >=A, compressor is with 2 times of running frequency command value F, and 2*F moves;
Step 5, compressor operating frequency 2*F>limit frequency B, compressor transfers twin-tub variable frequency work pattern to by single cylinder variable frequency work pattern;
Described minimum operation frequency A is compressor lowest reliable running frequency, and its span is 1-10Hz.
2. according to claim 1 with the energy-saving control method of double-mode double-rotor variable frequency compressor air-conditioner, it is characterized in that described time T is the time of room thermic load that still meets after compressor moves with minimum operation frequency A, its span is 1-15 minute.
3. according to claim 2 with the energy-saving control method of double-mode double-rotor variable frequency compressor air-conditioner, it is characterized in that described limit frequency B is 2 times of minimum operation frequency A, its span is 2-20Hz.
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| CN201110280299.7A CN102331072B (en) | 2011-09-20 | 2011-09-20 | Energy-saving control method for air conditioner with double-mode double-rotor variable frequency compressor |
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| JP2014040969A (en) * | 2012-08-23 | 2014-03-06 | Daikin Ind Ltd | Air conditioner |
| CN103062866A (en) * | 2013-01-04 | 2013-04-24 | 广东美的制冷设备有限公司 | Energy saving control method, energy saving control system and air conditioner |
| CN104101044B (en) * | 2013-04-01 | 2017-02-08 | 广东美的制冷设备有限公司 | Operation control method and device for inverter room air-conditioner |
| CN103353156B (en) * | 2013-04-27 | 2017-04-12 | 宁波奥克斯空调有限公司 | Control method for variable frequency air conditioner adopting duplex cylinder compressor |
| IN2014MU01491A (en) * | 2014-04-01 | 2015-10-09 | Emerson Climate Technologies | |
| CN103884081B (en) * | 2014-04-21 | 2016-04-06 | 珠海格力电器股份有限公司 | The control method of air-conditioning system |
| CN104047843B (en) * | 2014-05-27 | 2016-10-26 | 珠海格力电器股份有限公司 | Frequency conversion and single twin-tub changing method of positive displacement compressor |
| CN105444330B (en) * | 2014-08-06 | 2018-09-25 | 青岛海尔科技有限公司 | Method, apparatus for adjusting compressor operating frequency and its air-conditioning |
| CN106152429A (en) * | 2015-03-30 | 2016-11-23 | Tcl空调器(中山)有限公司 | Intelligent air-conditioning system and control method thereof |
| CN105465956B (en) * | 2015-12-21 | 2018-05-08 | Tcl空调器(中山)有限公司 | A kind of control method of twin-tub variable capacitance air conditioner |
| CN106196477A (en) * | 2016-07-26 | 2016-12-07 | 广东美的制冷设备有限公司 | Air conditioner system control method and device |
| CN106500257B (en) * | 2016-10-27 | 2019-10-29 | 广东美的制冷设备有限公司 | The control method and device of air conditioner and its duplex cylinder compressor |
| CN110260492B (en) * | 2019-05-29 | 2021-02-23 | 广东海悟科技有限公司 | Fan and compressor control method under refrigeration mode of variable frequency air conditioner |
| CN110186164A (en) * | 2019-05-31 | 2019-08-30 | 宁波奥克斯电气股份有限公司 | A kind of control method and device of air conditioner |
| CN110186165B (en) * | 2019-05-31 | 2021-04-02 | 宁波奥克斯电气股份有限公司 | Control method and device of air conditioner |
| CN110186163A (en) * | 2019-05-31 | 2019-08-30 | 宁波奥克斯电气股份有限公司 | A kind of control method and air conditioner of air conditioner |
| CN112460765B (en) * | 2020-11-30 | 2021-10-15 | 珠海格力电器股份有限公司 | Air conditioner control method and device, air conditioner and storage medium |
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