CN104748321A - Air conditioning system applicable to high-altitude areas and control method of air conditioning system - Google Patents

Air conditioning system applicable to high-altitude areas and control method of air conditioning system Download PDF

Info

Publication number
CN104748321A
CN104748321A CN201310745985.6A CN201310745985A CN104748321A CN 104748321 A CN104748321 A CN 104748321A CN 201310745985 A CN201310745985 A CN 201310745985A CN 104748321 A CN104748321 A CN 104748321A
Authority
CN
China
Prior art keywords
pressure
control
value
refrigerant
conditioning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201310745985.6A
Other languages
Chinese (zh)
Other versions
CN104748321B (en
Inventor
毛守博
卢大海
何建奇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Haier Group Corp
Qingdao Haier Air Conditioning Electric Co Ltd
Original Assignee
Haier Group Corp
Qingdao Haier Air Conditioning Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Haier Group Corp, Qingdao Haier Air Conditioning Electric Co Ltd filed Critical Haier Group Corp
Priority to CN201310745985.6A priority Critical patent/CN104748321B/en
Publication of CN104748321A publication Critical patent/CN104748321A/en
Application granted granted Critical
Publication of CN104748321B publication Critical patent/CN104748321B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/14Heat exchangers specially adapted for separate outdoor units
    • F24F1/16Arrangement or mounting thereof
    • 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
    • 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
    • F24F2110/40Pressure, e.g. wind pressure

Abstract

The invention discloses an air conditioning system applicable to high-altitude areas and a control method of the air conditioning system. The air conditioning system comprises an outdoor unit and at least one indoor unit, and one absolute pressure sensor used for measuring atmospheric pressure of the area where the air conditioning system is located is arranged on the outdoor unit and/or the indoor units; the air conditioning system performs modification on a high pressure value and a low pressure value according to absolute pressure measured by the absolute pressure sensor, and refrigerant superheat and supercooling and output capacity of a compressor are controlled according to the low pressure value and the high pressure value which are modified. By the air conditioning system and the control method, an atmospheric pressure value of the area where an air conditioner is located can be measured, parameters of target pressure, supercooling, superheat and the like of refrigerant in the air conditioning system can be modified, problems that the parameters of actual target pressure, supercooling and superheat in the air conditioning system are not controlled reasonably resulting in poor heating and cooling effects are effectively solved, operation effect and reliability of the air conditioning system are improved, and the air conditioning system and the control method of the same are applicable to large-sized promotion and use in the high-altitude areas.

Description

A kind of air-conditioning system and control method being applicable to High aititude region
Technical field
The present invention relates to Air-condition system control field, relate to a kind of air-conditioning system and the control method that are applicable to High aititude region more specifically.
Background technology
Air-conditioning and air conditioning, refer to the process of carrying out regulation and control by the parameter such as temperature, humidity, cleanliness factor, speed of artificial means to building/structures environment air, the structure of air-conditioning mainly comprises: compressor, condenser, evaporimeter, cross valve, check valve capillary module form.
The system pressure that the pressure sensor installed in air-conditioning system of the prior art detects is relative pressure, residing for air conditioner user from different places, the height above sea level of air-conditioning installation region is different, therefore the pressure gap that detects of the actual absolute pressure of coolant media and the pressure sensor of air-conditioning system is larger, the control procedure of the air-conditioner set state modulator such as goal pressure, degree of supercooling, the degree of superheat actual in running can be caused to occur deviation, the weak effect causing refrigeration and heat, reduces the reliability of air-conditioning system.
Also not having in current air conditioner industry can automatic detecting machine group installation site height above sea level carry out the function of corresponding pressure correction control, and the relative pressure of the coolant media that unit detects is due to the impact by height above sea level, the absolute pressure of actual coolant media changes, and along with the rising of height above sea level is higher, exhausted degree pressure change greatly, if the controling parameters still according to low altitude area region in air-conditioning system running runs, the degree of supercooling of reality during refrigerating operaton can be caused to control too small, frequency is too high; And the degree of superheat actual in heating process controls too small, underfrequency, causes air-conditioning system operational effect poor, and reliability reduces.
Summary of the invention
One object of the present invention is, propose a kind ofly to be provided with the atmospheric pressure that absolute pressure transducer can detect region residing for air-conditioning, and automatically the controling parameters such as goal pressure, degree of supercooling, the degree of superheat of refrigerant in air-conditioning system is revised, be adapted at the air-conditioning system that High aititude region uses.
One object of the present invention is, a kind of height above sea level that automatically can detect, calculate air-conditioning system is proposed, and automatically revising, and then the control method being applicable to High aititude regional air conditioner of the controling parameters such as goal pressure, degree of supercooling, the degree of superheat of refrigerant in conservative control air-conditioning system.
For reaching the present invention of this object by the following technical solutions:
Be applicable to the air-conditioning system in High aititude region, comprise off-premises station, at least one indoor set and control device, compressor is provided with in described off-premises station, described compressor is connected with gas-liquid separator with oil eliminator respectively, the pipeline that described compressor is connected with oil eliminator is provided with high-pressure pressure sensor, the pipeline that described compressor is connected with gas-liquid separator is provided with low-pressure sensor, described high-pressure pressure sensor is all connected with control device with low-pressure sensor, also comprise at least one for measuring the absolute pressure transducer of air-conditioning system region atmospheric pressure, described absolute pressure transducer is connected with control device, the force value that described in the atmospheric pressure value correction that described control device detects according to described absolute pressure transducer, high-pressure pressure sensor and low-pressure sensor detect.
Preferably, described absolute pressure transducer is arranged on the machine case of described off-premises station and/or indoor set.
Further, outdoor heat converter and subcooler is also provided with in described off-premises station; Described cooler is connected with outdoor second electric expansion valve, and described outdoor second electric expansion valve is used for carrying out reducing pressure by regulating flow to the refrigerant entering described subcooler; Described outdoor heat converter is connected with outdoor first electric expansion valve, and described outdoor first electric expansion valve is used for carrying out reducing pressure by regulating flow to the refrigerant entering described outdoor heat converter.
Be applicable to a control method for above-mentioned High aititude zone air-conditioning system, comprise the following steps:
S100, pressure differential according to absolute pressure transducer determination air-conditioning system region and zero height above sea level region atmospheric pressure;
S200, detect high-pressure value by described high-pressure pressure sensor, detect low pressure value by described low-pressure sensor, and according to described pressure differential, described high-pressure value and low pressure value are revised;
S300, air-conditioning control the degree of superheat of refrigerant, degree of supercooling and compressor fan-out capability according to revised low pressure value and high-pressure value.
Further, described S100 comprises the following steps:
S101, absolute pressure transducer detect the atmospheric pressure P of air-conditioning system region 1and pass to control device;
S102, control device are by P 1with the atmospheric pressure P in zero height above sea level region 0compare, determine P 1with P 0between pressure differential Δ P=P 0-P 1.
Further, described S200 comprises the following steps:
S201, high-pressure pressure sensor detect high-pressure value Pd, and low-pressure sensor detects low pressure value Ps, and high-pressure value Pd and low pressure value Ps is passed to control device;
S202, control device are revised high-pressure value according to Δ P, determine to revise high-pressure value Pdx=Pd-Δ P; Control device is revised low pressure value according to Δ P, determines to revise low pressure value Psx=Ps-Δ P.
Further, described S300 comprises the following steps:
In refrigerating operaton process:
S301, outdoor second electric expansion valve with target degree of supercooling X for benchmark, according to SC=T pdxthe degree of supercooling of this formula of-Tc to refrigerant regulates, and levels off to the value of target degree of supercooling X to make the value of SC;
Wherein, T pdxfor revising refrigerant condensation temperature corresponding to high-pressure value Pdx, Tc is the refrigerant actual temperature in liquid pipe, and SC is the difference of the refrigerant actual temperature revised in refrigerant condensation temperature corresponding to high-pressure value and liquid pipe;
S302, control device regulate the fan-out capability of compressor, the low pressure parameter Ps that the described compressor detected to make described low-pressure sensor exports 1=Psx+ Δ P;
In heating process:
S303, outdoor first electric expansion valve with target superheat degree Y for benchmark, according to SH=Ts-T psxthe degree of superheat of this formula to refrigerant regulates, and levels off to the value of target superheat degree Y to make the value of SH;
Wherein, TPsx revises evaporator refrigerant temperature corresponding to low pressure value, and Ts is the refrigerant temperature in tracheae, and SH is the difference of the refrigerant temperature revised in evaporator refrigerant temperature corresponding to low pressure value and tracheae;
S304, control device regulate the fan-out capability of compressor, the high-pressure parameter Pd that the described compressor detected to make described high-pressure pressure sensor exports 1=Pdx+ Δ P.
Beneficial effect of the present invention is: the air-conditioning system in the present invention and control method, owing to being provided with absolute pressure transducer, the atmospheric pressure in region residing for air-conditioning can be measured automatically revise controling parameters, and then the goal pressure of refrigerant in conservative control air-conditioning system, degree of supercooling, the controling parameters such as the degree of superheat, can effectively solve because the height above sea level refrigerant actual pressure that causes of difference and absolute pressure differ greatly, cause the goal pressure of unit reality, degree of supercooling, the problem of the cooling or heating effect difference that degree of superheat state modulator is improper and cause, improve operational effect and the reliability of air-conditioning system, be adapted at high altitude localities spread to use.
Accompanying drawing explanation
Fig. 1 is a kind of air-conditioning system johning knot composition being applicable to High aititude region that the specific embodiment of the invention provides.
In figure:
1, off-premises station; 101, compressor; 102, high-pressure pressure sensor; 103, low-pressure sensor; 104, oil eliminator; 105, cross valve; 106, subcooler; 107, liquid tube sensor; 108, trachea transducer; 109, outdoor heat converter; 110, absolute pressure transducer; 111, outdoor first electric expansion valve; 112, outdoor second electric expansion valve; 113, tracheae stop valve; 114, liquid pipe stop valve; 115, gas-liquid separator; 2, the first indoor set; 201, the first tracheae; 202, the first trachea transducer; 203, indoor first heat exchanger; 204, the first absolute pressure transducer; 205, the first liquid pipe; 206, the first liquid tube sensor; 207, indoor first electric expansion valve; 3, the second indoor set; 301, the second tracheae; 302, the second trachea transducer; 303, indoor second heat exchanger; 304, the second absolute pressure transducer; 305, the second liquid pipe; 306, the second liquid tube sensor; 307, indoor second electric expansion valve.
Detailed description of the invention
Technical scheme of the present invention is further illustrated by detailed description of the invention below in conjunction with accompanying drawing.
Be a kind of air-conditioning system being applicable to High aititude region that the present invention proposes as shown in Figure 1, comprise an off-premises station 1, at least one indoor set, in present embodiment, the number of indoor set is two, is respectively the first indoor set 2 and the second indoor set 3.Compressor 101 is provided with in described off-premises station 1, described compressor 101 is connected with gas-liquid separator 115 with oil eliminator 104 respectively, the pipeline that described compressor 101 is connected with oil eliminator 104 is provided with high-pressure pressure sensor 102, the pipeline that described compressor 101 is connected with gas-liquid separator 115 is provided with low-pressure sensor 103, described off-premises station 1 and/or indoor set are at least provided with one for measuring the absolute pressure transducer of air-conditioning system region atmospheric pressure, described absolute pressure transducer is arranged on the machine case of described off-premises station and/or indoor set.In this embodiment, described off-premises station 1 is provided with absolute pressure transducer 110, described first indoor set 2 is provided with the first absolute pressure transducer 204, described second indoor set 3 is provided with the second absolute pressure transducer 304.When off-premises station 1 and the first indoor set 2 second indoor set 3 are in sustained height, be as the criterion with the force value that the absolute pressure transducer that off-premises station 1 is arranged measures; But when off-premises station 1 is different with the height above sea level residing for the first indoor set 2, second indoor set 3, the force value measured to be in the high absolute pressure transducer of height above sea level is as the criterion.
Described absolute pressure transducer 110 is arranged on the machine case of described off-premises station 1, described first absolute pressure transducer 204 is arranged on the housing of described first indoor set 2, and described second absolute pressure transducer 304 is arranged on the housing of described second indoor set 3.
Outdoor heat converter 109 and subcooler 106 is also provided with in described off-premises station 1; Described cooler 106 is connected with outdoor second electric expansion valve 112, and described outdoor second electric expansion valve 112 is for carrying out reducing pressure by regulating flow to the refrigerant entering described subcooler 106; Described outdoor heat converter 109 is connected with outdoor first electric expansion valve 111, and described outdoor first electric expansion valve 111 is for carrying out reducing pressure by regulating flow to the refrigerant entering described outdoor heat converter 109.
When air-conditioning system carries out refrigerating operaton process: from compressor 101 HTHP cold media gas out successively through oil eliminator 104, cross valve 105, trachea transducer 108 laggard enter outdoor heat converter 109 carry out heat exchange, refrigerant after heat exchange was undertaken cold by entering subcooler 106 after outdoor first electric expansion valve 111, and the high-pressure liquid refrigerant after excessively cold enters into the first indoor set 2 and the second indoor set 3 respectively by liquid pipe stop valve 114, first liquid pipe 205 and the second liquid pipe 305 after liquid tube sensor 107; The high-pressure liquid refrigerant being entered into the first indoor set 2 by the first liquid pipe 205 carries out by entering the first heat exchanger 203 after the first liquid tube sensor 206, indoor first electric expansion valve 207 reducing pressure by regulating flow the heat that evaporation endothermic takes away indoor successively, got back in off-premises station 1 through tracheae dielectric valve 113 by the first trachea transducer 202 and the first tracheae 201 after liquid refrigerants becomes low-temp low-pressure gaseous coolant in indoor first heat exchanger 203, then get back in compressor 101 by cross valve 105 and gas-liquid separator 115; The high-pressure liquid refrigerant entering into the second indoor set 3 by the second liquid pipe 305 successively by the second liquid tube sensor 306, indoor second electric expansion valve 307 reducing pressure by regulating flow laggard enter indoor second heat exchanger 303 carry out evaporation endothermic and take away indoor heat, got back in off-premises station 1 through tracheae dielectric valve 113 by the second trachea transducer 302 and the second tracheae 301 after liquid refrigerants becomes low-temp low-pressure gaseous coolant in indoor second heat exchanger 303, then got back in compressor 101 by cross valve 105 and gas-liquid separator 115.
When air-conditioning system carries out heating process: from compressor 101, high temperature and high pressure gas out enters into indoor set part through high-pressure pressure sensor 102, oil eliminator 104, cross valve 105 and tracheae stop valve 113 successively, and the refrigerant in tracheae stop valve 113 enters into the first indoor set 2 and the second indoor set 3 respectively respectively by the first tracheae 201 and the second tracheae 301; Refrigerant in first tracheae 201 enters indoor first heat exchanger 203 by the first trachea transducer 202 and carries out heat exchange, and the refrigerant after heat exchange enters the first liquid pipe 205 by indoor first electric expansion valve 207; Refrigerant in second tracheae 301 is entered in indoor second heat exchanger 303 by the second trachea transducer 302 and carries out heat exchange, and the refrigerant after heat exchange enters the second liquid pipe 305 by indoor second electric expansion valve 307; Refrigerant in first liquid pipe 205 and the second liquid pipe 305 enters into off-premises station 1 by liquid pipe stop valve 114, refrigerant enters into subcooler 106 by outdoor second electric expansion valve 112, then after outdoor first electric expansion valve 111 reducing pressure by regulating flow, enter into outdoor heat converter 109 and carry out evaporation endothermic, turn back in compressor 101 through cross valve 105 after refrigerant becomes the gaseous coolant of low-temp low-pressure.
Additionally provide a kind of air conditioning control method being applicable to High aititude region in the present embodiment, comprise the following steps:
S100 is according to the pressure differential of absolute pressure transducer determination air-conditioning system region and zero height above sea level region atmospheric pressure;
S200 measures the high-pressure value of described high-pressure pressure sensor detection and the low pressure value of low-pressure sensor detection, and revises described high-pressure value and low pressure value according to described pressure differential;
S300 air-conditioning controls the degree of superheat of refrigerant, degree of supercooling and compressor fan-out capability according to revised low pressure value and high-pressure value.
Wherein, described S100 comprises the following steps:
S101, absolute pressure transducer detect the atmospheric pressure P of air-conditioning system region 1and pass to control device;
S102, control device are by P 1with the atmospheric pressure P in zero height above sea level region 0compare, determine P 1with P 0between pressure differential Δ P=P 0-P 1.
Described S200 comprises the following steps:
S201, high-pressure pressure sensor detect high-pressure value Pd, and low-pressure sensor detects low pressure value Ps, and high-pressure value Pd and low pressure value Ps is passed to control device;
S202, control device are revised high-pressure value according to Δ P, determine to revise high-pressure value Pdx=Pd-Δ P; Control device is revised low pressure value according to Δ P, determines to revise low pressure value Psx=Ps-Δ P.
Described S300 comprises the following steps:
In refrigerating operaton process:
S301, outdoor second electric expansion valve with target degree of supercooling X for benchmark, according to SC=T pdxthe degree of supercooling of this formula of-Tc to refrigerant regulates, and levels off to the value of target degree of supercooling X to make the value of SC;
Wherein, T pdxfor revising refrigerant condensation temperature corresponding to high-pressure value Pdx, Tc is the refrigerant actual temperature in liquid pipe, and SC is the difference of the refrigerant actual temperature revised in refrigerant condensation temperature corresponding to high-pressure value and liquid pipe;
S302, control device regulate the fan-out capability of compressor, the low pressure parameter Ps that the described compressor detected to make described low-pressure sensor exports 1=Psx+ Δ P;
In heating process:
S303, outdoor first electric expansion valve with target superheat degree Y for benchmark, according to SH=Ts-T psxthe degree of superheat of this formula to refrigerant regulates, and levels off to the value of target superheat degree Y to make the value of SH;
Wherein, T psxfor revising evaporator refrigerant temperature corresponding to low pressure value, Ts is the refrigerant temperature in tracheae, and SH is the difference of the refrigerant temperature revised in evaporator refrigerant temperature corresponding to low pressure value and tracheae;
S304, control device regulate the fan-out capability of compressor, the high-pressure parameter Pd that the described compressor detected to make described high-pressure pressure sensor exports 1=Pdx+ Δ P.Wherein, described Ts is recorded by trachea transducer 108, and described Tc is recorded by liquid tube sensor 107.
Off-premises station 1, first indoor set 2, second indoor set 3 in this detailed description of the invention is all in sustained height, and the atmospheric pressure therefore selecting absolute pressure transducer 110 to measure calculates.
Air-conditioning system in the present invention and control method, owing to being provided with absolute pressure transducer, the atmospheric pressure in region residing for air-conditioning can be measured and controling parameters is revised automatically, and then the goal pressure of refrigerant in conservative control air-conditioning system, degree of supercooling, the controling parameters such as the degree of superheat, can effectively solve because the height above sea level refrigerant actual pressure that causes of difference and absolute pressure differ greatly, cause the goal pressure of unit reality, degree of supercooling, the problem of the cooling or heating effect difference that degree of superheat state modulator is improper and cause, improve operational effect and the reliability of air-conditioning system, be adapted at high altitude localities spread to use.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other detailed description of the invention of the present invention, and these modes all will fall within protection scope of the present invention.

Claims (7)

1. be applicable to the air-conditioning system in High aititude region, comprise off-premises station, at least one indoor set and control device; Compressor is provided with in described off-premises station, described compressor is connected with gas-liquid separator with oil eliminator respectively, the pipeline that described compressor is connected with oil eliminator is provided with high-pressure pressure sensor, the pipeline that described compressor is connected with gas-liquid separator is provided with low-pressure sensor, described high-pressure pressure sensor is all connected with control device with low-pressure sensor, it is characterized in that
Also comprise at least one for measuring the absolute pressure transducer of air-conditioning system region atmospheric pressure, described absolute pressure transducer is connected with control device, the force value that described in the atmospheric pressure value correction that described control device detects according to described absolute pressure transducer, high-pressure pressure sensor and low-pressure sensor detect.
2. a kind of air-conditioning system being applicable to High aititude region according to claim 1, it is characterized in that, described absolute pressure transducer is arranged on the machine case of described off-premises station and/or indoor set.
3. a kind of air-conditioning system being applicable to High aititude region according to claim 1, is characterized in that, be also provided with outdoor heat converter and subcooler in described off-premises station;
Described cooler is connected with outdoor second electric expansion valve, and described outdoor second electric expansion valve is used for carrying out reducing pressure by regulating flow to the refrigerant entering described subcooler;
Described outdoor heat converter is connected with outdoor first electric expansion valve, and described outdoor first electric expansion valve is used for carrying out reducing pressure by regulating flow to the refrigerant entering described outdoor heat converter.
4. the control method being applicable to the air-conditioning system in High aititude region according to any one of claim 1-3, is characterized in that, comprise the following steps:
S100, pressure differential according to absolute pressure transducer determination air-conditioning system region and zero height above sea level region atmospheric pressure;
S200, detect high-pressure value by described high-pressure pressure sensor, detect low pressure value by described low-pressure sensor, and according to described pressure differential, described high-pressure value and low pressure value are revised;
S300, air-conditioning control the degree of superheat of refrigerant, degree of supercooling and compressor fan-out capability according to revised low pressure value and high-pressure value.
5. a kind of control method being applicable to the air-conditioning system in High aititude region according to claim 4, it is characterized in that, described S100 comprises the following steps:
S101, absolute pressure transducer detect the atmospheric pressure P of air-conditioning system region 1and pass to control device;
S102, control device are by P 1with the atmospheric pressure P in zero height above sea level region 0compare, determine P 1with P 0between pressure differential Δ P=P 0-P 1.
6. a kind of control method being applicable to the air-conditioning system in High aititude region according to claim 5, it is characterized in that, described S200 comprises the following steps:
S201, high-pressure pressure sensor detect high-pressure value Pd, and low-pressure sensor detects low pressure value Ps, and high-pressure value Pd and low pressure value Ps is passed to control device;
S202, control device are revised high-pressure value according to Δ P, determine to revise high-pressure value Pdx=Pd-Δ P; Control device is revised low pressure value according to Δ P, determines to revise low pressure value Psx=Ps-Δ P.
7. a kind of control method being applicable to the air-conditioning system in High aititude region according to claim 6, it is characterized in that, described S300 comprises the following steps:
In refrigerating operaton process:
S301, outdoor second electric expansion valve with target degree of supercooling X for benchmark, according to SC=T pdxthe degree of supercooling of this formula of-Tc to refrigerant regulates, and levels off to the value of target degree of supercooling X to make the value of SC;
Wherein, T pdxfor revising refrigerant condensation temperature corresponding to high-pressure value Pdx, Tc is the refrigerant actual temperature in liquid pipe, and SC is the difference of the refrigerant actual temperature revised in refrigerant condensation temperature corresponding to high-pressure value and liquid pipe;
S302, control device regulate the fan-out capability of compressor, the low pressure parameter Ps1=Psx+ Δ P that the described compressor detected to make described low-pressure sensor exports;
In heating process:
S303, outdoor first electric expansion valve with target superheat degree Y for benchmark, according to SH=Ts-T psxthe degree of superheat of this formula to refrigerant regulates, and levels off to the value of target superheat degree Y to make the value of SH;
Wherein, T psxfor revising evaporator refrigerant temperature corresponding to low pressure value, Ts is the refrigerant temperature in tracheae, and SH is the difference of the refrigerant temperature revised in evaporator refrigerant temperature corresponding to low pressure value and tracheae;
S304, control device regulate the fan-out capability of compressor, the high-pressure parameter Pd that the described compressor detected to make described high-pressure pressure sensor exports 1=Pdx+ Δ P.
CN201310745985.6A 2013-12-30 2013-12-30 A kind of air-conditioning system and control method suitable for High aititude region Active CN104748321B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310745985.6A CN104748321B (en) 2013-12-30 2013-12-30 A kind of air-conditioning system and control method suitable for High aititude region

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310745985.6A CN104748321B (en) 2013-12-30 2013-12-30 A kind of air-conditioning system and control method suitable for High aititude region

Publications (2)

Publication Number Publication Date
CN104748321A true CN104748321A (en) 2015-07-01
CN104748321B CN104748321B (en) 2018-04-27

Family

ID=53588393

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310745985.6A Active CN104748321B (en) 2013-12-30 2013-12-30 A kind of air-conditioning system and control method suitable for High aititude region

Country Status (1)

Country Link
CN (1) CN104748321B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105240938A (en) * 2015-10-12 2016-01-13 珠海格力电器股份有限公司 Air conditioner system
CN107933462A (en) * 2017-11-20 2018-04-20 中车株洲电力机车有限公司 A kind of control method and device of vehicle subsidiary engine
CN109185976A (en) * 2018-09-04 2019-01-11 珠海格力电器股份有限公司 Multi-joint unit, its degree of supercooling control method, computer equipment and storage medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09280681A (en) * 1996-04-17 1997-10-31 Matsushita Electric Ind Co Ltd Air conditioner
CN103175344A (en) * 2013-03-13 2013-06-26 青岛海信日立空调系统有限公司 Cold-region used multi-connected heat pump system and control method thereof
CN103411291A (en) * 2013-08-30 2013-11-27 海信(山东)空调有限公司 Expansion valve injection control method and system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09280681A (en) * 1996-04-17 1997-10-31 Matsushita Electric Ind Co Ltd Air conditioner
CN103175344A (en) * 2013-03-13 2013-06-26 青岛海信日立空调系统有限公司 Cold-region used multi-connected heat pump system and control method thereof
CN103411291A (en) * 2013-08-30 2013-11-27 海信(山东)空调有限公司 Expansion valve injection control method and system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105240938A (en) * 2015-10-12 2016-01-13 珠海格力电器股份有限公司 Air conditioner system
CN105240938B (en) * 2015-10-12 2017-11-24 珠海格力电器股份有限公司 A kind of air-conditioning system
CN107933462A (en) * 2017-11-20 2018-04-20 中车株洲电力机车有限公司 A kind of control method and device of vehicle subsidiary engine
CN109185976A (en) * 2018-09-04 2019-01-11 珠海格力电器股份有限公司 Multi-joint unit, its degree of supercooling control method, computer equipment and storage medium

Also Published As

Publication number Publication date
CN104748321B (en) 2018-04-27

Similar Documents

Publication Publication Date Title
US9239175B2 (en) Air conditioner and heat source unit with other unit start up control
US7856836B2 (en) Refrigerating air conditioning system
CN102434943B (en) Method for limiting frequency of air condition compressor
CN103216908B (en) Control method for outdoor fan in refrigeration of variable frequency multi-split air-conditioning unit
EP2320169B1 (en) Air conditioner and method for determining the amount of refrigerant therein
EP2236960B1 (en) Air conditioner and method of determining amount of refrigerant
CN102778006B (en) Method and device for acquiring pressure parameter of multi-connected air-conditioning system
US20110000240A1 (en) Air conditioning apparatus
US20090095000A1 (en) Air conditioner
JPH0968356A (en) Refrigerant circulating system
CN103471275A (en) Enhanced vapor injection air-conditioning circulating system and control method thereof
US20110088414A1 (en) Air conditioning apparatus refrigerant quantity determination method and air conditioning apparatus
CN107143973B (en) A kind of control method of multi-connected machine underload refrigerating operaton
CN106247676B (en) Control method, control device and the air conditioner of air conditioner
CN105627612A (en) Outdoor unit refrigerant pipeline system, air conditioner and refrigeration control method for air conditioner
CN104748321A (en) Air conditioning system applicable to high-altitude areas and control method of air conditioning system
CN202902539U (en) Multi-split air conditioner system pressure parameter obtaining device
JP2006292214A (en) Addition method of refrigerant amount determining function of air conditioner, and air conditioner
CN105258219B (en) Air conditioner and its control method and control system
JP6109307B2 (en) Air conditioner
US20090044551A1 (en) Air conditioner
CN104748293A (en) Method for controlling air conditioning super-cooling degree through pressure sensor
US20190170415A1 (en) Diagnostic mode of operation to detect refrigerant leaks in a refrigeration circuit
JP5505477B2 (en) AIR CONDITIONER AND REFRIGERANT AMOUNT JUDGING METHOD FOR AIR CONDITIONER
Tu et al. Determination criterion of defrosting condition for variable refrigerant flow air conditioning system

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
GR01 Patent grant