CN101165411A - Simultaneous cooling-heating multiple type air conditioner - Google Patents
Simultaneous cooling-heating multiple type air conditioner Download PDFInfo
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- CN101165411A CN101165411A CNA200610170068XA CN200610170068A CN101165411A CN 101165411 A CN101165411 A CN 101165411A CN A200610170068X A CNA200610170068X A CN A200610170068XA CN 200610170068 A CN200610170068 A CN 200610170068A CN 101165411 A CN101165411 A CN 101165411A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/007—Compression machines, plants or systems with reversible cycle not otherwise provided for three pipes connecting the outdoor side to the indoor side with multiple indoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0231—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with simultaneous cooling and heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Disclosed is a simultaneous cooling-heating multiple type air conditioner including a plurality of cooling-heating combined-use indoor units controlled in an operation domain divided into a plurality of operation zones based on a refrigerant suction pressure and a refrigerant discharge pressure of a compressor, wherein the operation domain includes a first operation zone in which a cooling-initiative simultaneous cooling and heating operation mode is switched to a heating-initiative simultaneous cooling and heating operation mode, a second operation zone in which the cooling-initiative simultaneous cooling and heating operation mode or the heating-initiative simultaneous cooling and heating operation mode is not switched to different modes, and a third operation zone in which the heating-initiative simultaneous cooling and heating operation mode is switched to the cooling-initiative simultaneous cooling and heating operation mode.
Description
Technical field
The present invention relates to a kind of multi-type air conditioner, and relate in particular to a kind of multi-type air conditioner of refrigeration-heat supply when having simultaneously refrigeration and heating function.
Background technology
Usually, air-conditioner is the equipment that is used for interior space refrigeration and heat supply, the inner space of dwelling house for example, restaurant and office.In order effectively the interior space that is divided into several rooms to be freezed and heat supply, developed independently multi-type air conditioner to each room refrigeration and heat supply.Concrete, utilize following mode to construct multi-type air conditioner, a plurality of indoor units and an outdoor unit are coupled together, and indoor unit is installed in each room.Each indoor unit moves with refrigeration mode, perhaps with the heating mode operation, and regulates the air of the interior space.
Yet all rooms that existing multi-type air conditioner is controlled so as at one time an interior space freeze or heat supply, thereby they can not satisfy the requirement of differently regulating each room.
Summary of the invention
One object of the present invention is to provide a kind of multi-type air conditioner of refrigeration-heat supply simultaneously, and the refrigeration that it can carry out at the same time and heat supply operating period are controlled with being stabilized.
To achieve these goals and advantageous effects, according to an aspect of the present invention, a kind of multi-type air conditioner of refrigeration-heat supply when controlling with operation domain is provided, this operation domain comprises a plurality of operating spaces, these operating spaces are that the discharge pressure according to the suction pressure of compressor refrigerant and cold-producing medium is divided into, wherein operation domain comprises first operating space, second operating space and the 3rd operating space, in first operating space, the operator scheme of refrigeration and heat supply when the operator scheme of refrigeration and heat supply switches to the heat supply active in the time of with the refrigeration active, in second operating space, when refrigeration initiatively between the operator scheme of the operator scheme of refrigeration and heat supply and heat supply refrigeration and heat supply initiatively the time not emergence pattern switch, in the 3rd operating space, the operator scheme of refrigeration and heat supply when the operator scheme of refrigeration and heat supply switches to the refrigeration active in the time of with the heat supply active.
According to another aspect of the present invention, provide a kind of multi-type air conditioner of refrigeration-heat supply simultaneously, include: the indoor unit that a plurality of refrigeration-heat supplies are used in combination, each indoor unit all has indoor heat converter; The outdoor unit that refrigeration-heat supply is used in combination, comprised compressor, outdoor heat converter, with the refrigeration switching part that is installed on the compressor discharge side, be used for switching cold-producing medium stream according to operating condition, operating condition is the only operation of refrigeration for example, the only operation of heat supply, the operation of refrigeration refrigeration and heat supply initiatively time the and heat supply are freezed initiatively the time and the operation of heat supply; And be installed in refrigeration-heat supply and be used in combination indoor unit and refrigeration-heat supply and be used in combination distributor between the outdoor unit, be used for cold-producing medium being assigned to the path that refrigeration-heat supply is used in combination indoor unit according to operating condition, operating condition is the only operation of refrigeration for example, the only operation of heat supply, the operation of refrigeration and heat supply in the time of the refrigeration active, the operation of refrigeration and heat supply in the time of with the heat supply active, wherein utilize the operation domain that includes a plurality of operating spaces to control air-conditioner, these operating spaces are to divide according to the cold-producing medium suction pressure of compressor and cold-producing medium discharge pressure, wherein operation domain comprises first operating space, second operating space and the 3rd operating space, in first operating space, the operator scheme of refrigeration and heat supply when the operator scheme of refrigeration and heat supply switches to the heat supply active in the time of with the refrigeration active, in second operating space, when refrigeration initiatively between the operator scheme of the operator scheme of refrigeration and heat supply and heat supply refrigeration and heat supply initiatively the time not emergence pattern switch, in the 3rd operating space, the operator scheme of refrigeration and heat supply when the operator scheme of refrigeration and heat supply switches to the refrigeration active in the time of with the heat supply active.
In first operating space, the suction pressure of compressor is less than first suction pressure, and the discharge pressure of compressor is less than first discharge pressure; In second operating space, the scope of compressor suction pressure from first suction pressure to second suction pressure, wherein second suction pressure is greater than first suction pressure, and to second discharge pressure, wherein second discharge pressure is greater than first discharge pressure from first discharge pressure for the scope of compressor discharge pressure; And comparable second suction pressure of compressor suction pressure is big, and comparable second discharge pressure of compressor discharge pressure is big.In this example,, can control the air-conditioner that will operate in first operating space and the 3rd operating space and move to second operating space by changing from the cold-producing medium discharge flow velocity of compressor discharge or by changing the revolution of outdoor fan.
Distributor can comprise liquid header, low pressure discharge and high-pressure gas collection pipe.Multi-type air conditioner according to refrigeration-heat supply simultaneously of the present invention also can comprise the liquid refrigerant pipe that is used to connect refrigeration-heat supply outdoor unit and liquid header, be used to connect the low pressure tracheae of refrigeration-heat supply outdoor unit and low pressure discharge, and the high-pressure air pipe that is used to connect refrigeration-heat supply outdoor unit and high-pressure gas collection pipe.
Because the multi-type air conditioner according to refrigeration-heat supply simultaneously of the present invention switches its operator scheme in the operation domain of a plurality of operating spaces of being told according to the cold-producing medium suction pressure and the cold-producing medium discharge pressure of compressor, therefore refrigeration and heat supply operating period at the same time, can stably move and control air-conditioner.
Description of drawings
Fig. 1 has described the schematic diagram of the multi-type air conditioner of refrigeration-heat supply simultaneously according to an embodiment of the invention;
Fig. 2 is the view of the operating conditions of the multi-type air conditioner of refrigeration-heat supply when having described shown in Fig. 1, and it operates under the operator scheme of only freezing;
Fig. 3 is the view of the operating conditions of the multi-type air conditioner of refrigeration-heat supply when having described shown in Fig. 1, and it operates under the operator scheme of only heat supply;
Fig. 4 is the view of the operating conditions of the multi-type air conditioner of refrigeration-heat supply when having described shown in Fig. 1, and it operates under the operator scheme of refrigeration refrigeration and heat supply initiatively the time;
Fig. 5 is the figure of the operating conditions of the multi-type air conditioner of refrigeration-heat supply when having described shown in Fig. 1, and it operates under the operator scheme of heat supply refrigeration and heat supply initiatively the time;
Fig. 6 is the view of the operating conditions of the multi-type air conditioner of refrigeration-heat supply when having described shown in Fig. 1, and it is controlled so as to execution and freezes simultaneously-the heat supply operation.
DETAILED DESCRIPTION OF THE PREFERRED
Hereinafter, will in conjunction with the accompanying drawings the multi-type air conditioner according to refrigeration-heat supply simultaneously of the present invention be described.
Developed and developed multi-type air conditioner, the some of them indoor unit impels the air cooling, and meanwhile, other indoor units impel air heat.According to freezing simultaneously for compressor-target discharge pressure and target suction pressure that heat supply operation is provided with, to existingly be used for freezing simultaneously-multi-type air conditioner that heat supply is operated controls.In this example, ratio according to the operation of the cooling and heating of the indoor unit that under refrigeration mode or heat supply mode, moves, the multi-type air conditioner of refrigeration-heat supply is simultaneously carried out the operation of refrigeration refrigeration and heat supply initiatively the time, or heat supply is freezed initiatively the time and the operation of heat supply.Thus, owing to be used for freezing simultaneously-multi-type air conditioner of heat supply is based on operation ratio, indoor temperature and the outdoor temperature of indoor unit and controlled individually, therefore a non-control district is arranged, wherein the operation of air-conditioner is not subjected to the control of target discharge pressure and target suction pressure.
In addition, the multi-type air conditioner that existing execution is freezed simultaneously and heat supply is operated has a unfavorable effect, and promptly it can not respond multiple design specification, a plurality of indoor temperature scopes, and a plurality of outdoor temperature scope.Thus, because existing execution is freezed simultaneously and the multi-type air conditioner of heat supply operation does not have the optimal operations effect, so it can not fully freeze and heat supply to the interior space.Have again, because existing execution is freezed simultaneously and the control circuit of the multi-type air conditioner of heat supply operation is very complicated, therefore when refrigeration initiatively the operation of refrigeration and heat supply freeze initiatively the time with heat supply and the operation of heat supply between operator scheme increased by 5 minutes to 15 minutes switching time, and during operator scheme switching time, produce noise.Also have, when attempting to reduce the pattern switching noise, can cause damage to compressor.
The multi-type air conditioner 100 of refrigeration-heat supply when Fig. 1 has described according to the embodiment of the invention.The multi-type air conditioner 100 of refrigeration-heat supply simultaneously comprises the first, the second, the indoor unit B1 that the third and fourth refrigeration-heat supply is used in combination, B2, B3 and B4, the outdoor unit A that refrigeration-heat supply is used in combination, and compressor C.
The outdoor unit A that refrigeration-heat supply is used in combination comprises first and second compressors 53 and 54, outdoor heat converter 51, outdoor heat exchanger fan 61 and switching part.Switching part comprises cross valve 62.The suction part of first compressor 53 and second compressor 54 is connected with each other by the reservoir 52 that is used in combination.First compressor 53 is frequency conversion (inverter) compressors, and it can change the compressed capability of cold-producing medium, and second compressor 54 is constant-speed compressors, and it has the compressed capability of constant cold-producing medium.
Have first discharge pipe 55 and second discharge pipe 56 to be connected to first and second compressors 53 and 54 corresponding discharges on the side, and they are by bridging part 57 cross-over connections.First and second discharge pipes 55 and 56 also are connected respectively on first and second oil eliminators 58 and 59, so that from by recovered oil first and second compressors 53 and 54 cold-producing mediums of being discharged.First and second oil eliminators 58 and 59 are connected respectively on first and second recovery tubes 30 and 31, so that the oil that is separated is directed to the corresponding suction side of first and second compressors 53 and 54.
Bridging part 57 is connected on the high-pressure air pipe 63, gets around cross valve 62 so that make from first and second compressors 53 and 54 cold-producing mediums of being discharged.Bridging part 57 is connected on cross valve 62 and one the 3rd discharge pipe 68.
At the middle place that is connected in the liquid line 72 between outdoor heat converter 51 and the distributor C outdoor electric expansion valve 65 and supercooling apparatus 66 are installed.Make the cold-producing medium expansion during operation of outdoor electric expansion valve 65 refrigeration and heat supply when only heat supply operation and heat supply are initiatively.During the operation of supercooling apparatus 6 refrigeration and heat supply when refrigerating operation only and refrigeration are initiatively, cool off the cold-producing medium that flows to distributor.During operation period of outdoor electric expansion valve 74 refrigeration and heat supply in operation period of heat supply only or heat supply initiatively, before cold-producing medium is directed to outdoor heat converter 51, make and be condensate in first to interior heat exchanger 11,21,31 of fourth ventricle and 41 interior cooling agents expansions.Supercooling apparatus 66 comprises: subcooler 66a, this subcooler 66a are installed into around a part of liquid line 72; Bypass pipe 66b, it is installed between subcooler 66a and the distributor C, so that the cold-producing medium that makes a part move to distributor is walked around distributor, it is directed among the subcooler 66a thus; Be installed to the electric expansion valve 66c on a part of bypass pipe 66b; And be connected recovery tube 66d between subcooler 66a and the 3rd discharge pipe 64.
Distributor C is installed in the indoor unit B1 that outdoor unit A that refrigeration-heat supply is used in combination and first to the 4th refrigeration-heat supply are used in combination, B2, between B3 and the B4, and it is based on operating condition, refrigerating operation only for example, the operation of only heat supply operation, refrigeration refrigeration and heat supply initiatively time the and heat supply are freezed initiatively the time and the operation of heat supply, and cold-producing medium is assigned to first, second, the indoor unit B1 that the third and fourth refrigeration-heat supply is used in combination, B2 is among B3 and the B4.Distributor C comprises high-pressure gas collection pipe 81, low pressure discharge 82, liquid header 83 and control valve (not shown).
The indoor unit B1 that the first, the second, the third and fourth refrigeration-heat supply is used in combination, B2, B3 and B4 comprise corresponding first, the second, the third and fourth electric expansion valve 12,22,32 and 42, and corresponding first, the second, the third and fourth indoor fan 15,25,35 and 45.The first, the second, third and fourth electric expansion valve 12,22,32 and 42 are mounted respectively the first, the second, third and fourth tube connector 13, on 23,33 and 43, these tube connectors are connected to first, second, third and fourth indoor heat converter 11,21,31 and 41 and high-pressure gas collection pipe 81 between.
High-pressure gas collection pipe 81 is connected on the high-pressure air pipe 63 of bridging part 57, and on the respective side of the first, the second, third and fourth indoor heat converter 11,21,31 and 41.Low pressure discharge 82 is connected on the low pressure tracheae 75 via suction line 64, and is connected on the first, the second, third and fourth indoor heat converter 11,21,31 and the 41 corresponding opposite sides.High-pressure gas collection pipe 81, low pressure discharge 82 and liquid header 83 can be connected respectively to the high-pressure air pipe 63 ' on the different outdoor unit (not shown), on low pressure tracheae 75 ' and the liquid line 72 '.
Referring to Fig. 2 to Fig. 5, below will be to shown in Fig. 1 the time multi-type air conditioner of refrigeration-heat supply mode of operation and describe according to the flow of refrigerant of method of operating.
The mode of operation and the flow of refrigerant of the multi-type air conditioner of refrigeration-heat supply when Fig. 2 has described when refrigerating operation only.Be in the cold-producing mediums gases at high pressure state, that discharge from first and second compressors 53 and 54 and flow through first and second discharge pipes 55 and 56, and finally flow in the outdoor heat converter 51 by the 3rd distributing valve 68 and cross valve 62.Via supercooling apparatus 66 high pressure liquid refrigerant is incorporated in the liquid header 83, wherein high pressure liquid refrigerant obtains when carrying out condensation by 51 pairs of high-pressure gaseous refrigerants of outdoor heat converter.By the first, the second, the third and fourth indoor tube connector 13,23,33 and 43 cold-producing mediums of being discharged from liquid header 83 are by first, the second, the third and fourth electric expansion valve 12,22,32 and 42 expand, afterwards by the first, the second, third and fourth indoor heat converter 11,21,31 and 41 evaporations, and be introduced at last in the low pressure discharge 82.To be incorporated into suction and the discharge pipe 64 from the low-pressure gaseous refrigerant that low pressure discharge 82 is discharged, be drawn in first and second compressors 53 and 54 by reservoir 52 afterwards.
The mode of operation of the multi-type air conditioner 100 of refrigeration-heat supply and the flow of refrigerant in the air-conditioner 100 when Fig. 3 has described when only heat supply is operated.Flow through first and second discharge pipes 55 and 56 from first and second compressors 53 and 54 high-pressure gaseous refrigerants of discharging, flow through bridging part 57 and high-pressure air pipe 63 afterwards, finally be introduced in the high-pressure gas collection pipe 81, the centre need not to flow through cross valve 62.Via the five, the six, the cold-producing medium that the 7th and the 8th indoor tube connector 14,24,34 and 44 is discharged from high-pressure gas collection pipe 81, the first, the second, condensation in third and fourth indoor heat converter 11,21,31 and 41.Afterwards, cold-producing medium is incorporated in the liquid header 83, discharges by liquid line 72 then, then expand evaporation in outdoor heat converter 51 at last by outdoor electric expansion valve 65.Low-pressure gaseous refrigerant flows to suction line 64 via cross valve 62, is introduced in first and second compressors 53 and 54 via reservoir 52 afterwards.
The mode of operation of the multi-type air conditioner 100 of refrigeration-heat supply and the flow of refrigerant of air-conditioner 100 in the time of when Fig. 4 has described the operation of refrigeration and heat supply when refrigeration initiatively.For explaining reason easily, suppose the first, the second and the 3rd indoor unit B1, B2 and B3 operate under the refrigeration mode, and unit B 4 operates under the heat supply mode in the fourth ventricle.Operate in the first, the second and the 3rd indoor unit B1 of refrigeration mode, the flow of refrigerant among B2 and the B3 with in that only the flow of refrigerant shown in the refrigerating operation is identical.Below will be mainly the operation shown in Fig. 4 be described referring to different between Fig. 2 and Fig. 4.
Flow through high-pressure air pipe 63 from first and second compressors 53 and 54 a part of high-pressure gaseous refrigerants of discharging via bridging part 57, be introduced in afterwards in the high-pressure gas collection pipe 81.The cold-producing medium that flows out from high-pressure gas collection pipe 81 flows through the 8th indoor tube connector 44, and condensation in the heat exchanger 41 in fourth ventricle afterwards is introduced in the liquid header 83 at last.Cold-producing medium that unit B 4 flows out in fourth ventricle and the cold-producing medium that flows out from outdoor heat converter 51 will be introduced in the liquid header 83, and they will be incorporated into the first, the second and the 3rd indoor unit B1 respectively, among B2 and the B3.
The interior flow of refrigerant of the mode of operation of the multi-type air conditioner 100 of refrigeration-heat supply and air-conditioner 100 in the time of when Fig. 5 is depicted in the operation of heat supply refrigeration and heat supply initiatively the time.For explaining reason easily, suppose the first, the second and the 3rd indoor unit B1, B2 and B3 operate under the heat supply mode, and unit B 4 operates under the refrigeration mode in the fourth ventricle.At the first, the second and the 3rd indoor unit B1, the flow of refrigerant among B2 and the B3 is identical with the flow of refrigerant of the operation of the only heat supply shown in Fig. 3.Flow of refrigerant in fourth ventricle in the unit B 4 is different.Flow through the 4th tube connector 43 from liquid header 83, high pressure liquid refrigerant is incorporated in the fourth ventricle in the unit B 4, in fourth ventricle, expand in the electric expansion valve 42 afterwards, evaporation in the heat exchanger 41 in fourth ventricle then, and be incorporated in the low pressure discharge 82.After this, cold-producing medium flows through low pressure tracheae 75, and flows in the 3rd discharge pipe 64, thus with the refrigerant mixed of being evaporated by outdoor heat converter 51.
Fig. 6 has described the first, the second, the indoor unit B1 that the third and fourth refrigeration-heat supply is used in combination, B2, the operation domain 150 of refrigeration-heat supply in the time of B3 and B4.According to the cold-producing medium suction pressure and the cold-producing medium discharge pressure of first and second compressors 53 and 54, operation domain 150 is divided into a plurality of operating spaces.Can utilize by the measured numerical value of discharge pipe upward pressure sensor that is installed to first and second compressors 53 and 54 and set the cold-producing medium discharge pressure, or set the cold-producing medium discharge pressure according to the measured numerical value of pressure sensor that is installed on the 3rd discharge pipe.
Operation domain is divided into matrix form, and comprises the first operating space R1, the second operating space R2 and the 3rd operating space R3.In the first operating space R1, first and second compressors 53 and 54 suction pressure are less than the first suction pressure P1, and the discharge pressure of first and second compressors 53 and 54 is less than the first discharge pressure P3.In the second operating space R2, first and second compressors 53 and 54 suction pressure equal the first suction pressure P1 or bigger than it, and equal the second suction pressure P2 or littler than it, wherein the second suction pressure P2 is greater than the first suction pressure P1 (P2＞P1), and the discharge pressure of first and second compressors 53 and 54 equals the first discharge pressure P3 or bigger than it, and equal the second discharge pressure P4 or littler than it, wherein the second discharge pressure P4 is greater than the first discharge pressure P3 (P4＞P3).In the 3rd operating space R3, first and second compressors 53 and 54 suction pressure are greater than the second suction pressure P2, and the discharge pressure of first and second compressors 53 and 54 is greater than the second discharge pressure P4.For example, the first suction pressure P1 is 725kPa (gauge pressure), and the second suction pressure P2 is 987kPa (gauge pressure), and the first discharge pressure P3 is 2565kPa (gauge pressure), and the second discharge pressure P4 is 2985kPa (gauge pressure).
The multi-type air conditioner 100 of refrigeration-heat supply simultaneously in the first operating space R1, switch refrigeration initiatively in the operator scheme of refrigeration and heat supply.That is to say, the operation of refrigeration and heat supply when the multi-type air conditioner 100 of refrigeration-heat supply is simultaneously at first carried out the refrigeration active, switch its operator scheme afterwards, thereby when the suction pressure of first and second compressors 53 and 54 or discharge pressure reduce and reached in the scope of the first operating space R1, carry out the operation of heat supply refrigeration and heat supply initiatively the time.
Yet in the 3rd operating space R3, the multi-type air conditioner 100 of refrigeration-heat supply simultaneously switches its operator scheme, the operation of refrigeration and heat supply when the operation of refrigeration and heat supply switches to the refrigeration active in the time of from the heat supply active.That is to say, the multi-type air conditioner 100 of refrigeration-heat supply is simultaneously at first carried out the operation of heat supply refrigeration and heat supply initiatively the time, carries out when the suction pressure of first and second compressors 53 and 54 or discharge pressure increase and reach in the scope of the 3rd operating space R3 afterwards that refrigeration is freezed in initiatively and the operation of heat supply.
The second operating space R2 is the routine operation district, and the switching of operator scheme does not take place in this operating space.That is to say, the multi-type air conditioner 100 of refrigeration-heat supply is simultaneously carried out the operation of refrigeration and heat supply in the heat supply initiatively in the first operating space R1, even the suction pressure of first and second compressors 53 and 54 or discharge pressure increase and reach in the scope of the second operating space R2, the operation of refrigeration and heat supply when this air-conditioner 100 still keeps heat supply initiatively.As interchangeable embodiment, the operation of refrigeration and heat supply when the multi-type air conditioner 100 of refrigeration-heat supply is simultaneously at first carried out in the 3rd operating space R3 and freezed initiatively, even first and second compressors 53 and 54 suction pressure or discharge pressure reduce and reach in the scope of the second operating space R2 afterwards, the operation of refrigeration and heat supply when this air-conditioner 100 still keeps refrigeration initiatively.
The multi-type air conditioner 100 of refrigeration-heat supply is controlled when operating in the first operating space R1 and the 3rd operating space R3, and it is entered in the second operating space R2.Here different control methods can be arranged.For example, can control the cold-producing medium delivery flow of first and second compressors 53 and 54.That is to say, can change the frequency of first compressor 53, or utilize the ON/OFF of second compressor 54 to control to change refrigerant flow.In addition, can change the revolution of outdoor fan 62.For example, when the multi-type air conditioner 100 of refrigeration-heat supply simultaneously in the 3rd operating space R3, carry out refrigeration initiatively in during the operation of refrigeration and heat supply, if increase the cold-producing medium delivery flow of first and second compressors 53 and 54 or the revolution of increase outdoor fan 61, the operation of the multi-type air conditioner 100 of refrigeration-heat supply simultaneously can move in the second operating space R2.Moving to the used time of the second operating space R2 from the first operating space R1 or the 3rd operating space R3 can be shortened greatly, for example, shortens to 3 minutes or shorter, and existing operating space switching time approximately is 5 to 15 minutes.Thus, because the multi-type air conditioner 100 of refrigeration-heat supply simultaneously increases in the time of the second operating space R2 stable operation, thereby can realize optimal air adjusting circulating effect, and can simplify control circuit.
Above reference example is explained the present invention, but the invention is not restricted to the embodiments described.In summing up above detailed description, what those skilled in the art will recognize that is, need not to run counter to principle of the present invention, just can carry out various changes and modifications to preferred embodiment.Thus, be understood that easily that those are for the distortion of preferred embodiment and revise all within the scope of the present invention.
Claims (12)
1. the multi-type air conditioner of a refrigeration-heat supply simultaneously, comprise the indoor unit that a plurality of refrigeration-heat supplies are used in combination, and operate in the operation domain that this operation domain has a plurality of operating spaces, they are by the cold-producing medium suction pressure of compressor and cold-producing medium discharge pressure and tell, and wherein operation domain comprises:
First operating space, the operator scheme of refrigeration and heat supply when the operator scheme of refrigeration and heat supply switches to the heat supply active when wherein will freeze initiatively;
Second operating space, the operator scheme of refrigeration and heat supply or heat supply are not freezed initiatively the time and the operator scheme of heat supply switches to different mode when wherein will not freeze initiatively; With
The 3rd operating space, the operator scheme of refrigeration and heat supply when the operator scheme of refrigeration and heat supply switches to the refrigeration active in the time of wherein with the heat supply active.
2. the multi-type air conditioner of refrigeration-heat supply according in the claim 1 time, wherein
In first operating space, the suction pressure of compressor is less than first suction pressure, and the discharge pressure of compressor is less than first discharge pressure,
In second operating space, the suction pressure of compressor is in the scope from first suction pressure to second suction pressure, wherein second suction pressure is greater than first suction pressure (second suction pressure＞first suction pressure), and the discharge pressure of compressor is (second discharge pressure＞first discharge pressure) in the scope from first discharge pressure to second discharge pressure, and
In the 3rd operating space, the suction pressure of compressor is greater than second suction pressure, and the discharge pressure of compressor is greater than second discharge pressure.
3. the multi-type air conditioner of refrigeration-heat supply according in the claim 2 time is wherein controlled the air-conditioner that operates in first operating space and the 3rd operating space, moves it in second operating space.
4. the multi-type air conditioner of refrigeration-heat supply according in the claim 3 time, wherein control the cold-producing medium discharge currents that comes from compressor by this way, promptly the air-conditioner that operates in first operating space and the 3rd operating space is controlled, moved it in second operating space.
5. according to the multi-type air conditioner of refrigeration-heat supply simultaneously in the claim 3, also comprise: outdoor heat converter is used for the heat and the outdoor air of cold-producing medium are exchanged; And outdoor fan, be used for outdoor air is blown in the outdoor heat converter,
Wherein the revolution of control room external fan is by this way promptly controlled the air-conditioner that operates in first operating space and the 3rd operating space, moves it in second operating space.
6. the multi-type air conditioner of a refrigeration-heat supply simultaneously comprises:
The indoor unit that a plurality of refrigeration-heat supplies are used in combination, each includes indoor heat converter;
The outdoor unit that refrigeration-heat supply is used in combination, it comprises compressor, outdoor heat converter, with the switching part that is installed on the compressor discharge side, be used for switching cold-producing medium stream the wherein for example only operation of refrigeration of operating condition, the only operation of heat supply based on operating condition, the operation of refrigeration refrigeration and heat supply initiatively time the and heat supply are freezed initiatively the time and the operation of heat supply; With
Distributor, it is installed between the indoor unit that outdoor unit that refrigeration-heat supply is used in combination and refrigeration-heat supply be used in combination, be used for cold-producing medium being assigned to the indoor unit that refrigeration-heat supply is used in combination based on operating condition, the wherein for example only operation of refrigeration of operating condition, the only operation of heat supply, the operation of refrigeration refrigeration and heat supply initiatively time the and heat supply are freezed initiatively the time and the operation of heat supply
When wherein the indoor unit that is used in combination in refrigeration-heat supply freezes with the heat supply operation simultaneously, the indoor unit that refrigeration-heat supply is used in combination is controlled in according to the cold-producing medium suction pressure of compressor and cold-producing medium discharge pressure and is divided in the operation domain of a plurality of operating spaces, wherein operation domain comprises first operating space, second operating space and the 3rd operating space, in first operating space, the operation of refrigeration and heat supply when the operation of refrigeration and heat supply switches to the heat supply active in the time of with the refrigeration active, in second operating space, the operation of refrigeration and heat supply or heat supply are not freezed initiatively the time and the operation of heat supply switches to other operations when will not freeze initiatively, and in the 3rd operating space, the operation of refrigeration and heat supply when the operation of refrigeration and heat supply switches to the refrigeration active in the time of with the heat supply active.
7. the multi-type air conditioner of refrigeration-heat supply according in the claim 6 time,
Wherein in first operating space, the suction pressure of compressor is less than first suction pressure, and the discharge pressure of compressor is less than first discharge pressure,
In second operating space, the suction pressure of compressor is in the scope from first suction pressure to second suction pressure, wherein second suction pressure is greater than first suction pressure (second suction pressure＞first suction pressure), and the discharge pressure of compressor is (second discharge pressure＞first discharge pressure) in the scope from first discharge pressure to second discharge pressure, and
In the 3rd operating space, the suction pressure of compressor is greater than second suction pressure, and the discharge pressure of compressor is greater than second discharge pressure.
8. the multi-type air conditioner of refrigeration-heat supply according in the claim 7 time is wherein controlled air-conditioner by this way, promptly the air-conditioner that operates in first operating space and the 3rd operating space is controlled, and moves it in second operating space.
According to Claim 8 in the time refrigeration-heat supply multi-type air conditioner, wherein control the cold-producing medium discharge currents that comes from compressor by this way, promptly the air-conditioner that operates in first operating space and the 3rd operating space is controlled, moved it in second operating space.
According to Claim 8 in the multi-type air conditioner of refrigeration-heat supply simultaneously, wherein also comprise outdoor fan, be used for outdoor air is blown in the outdoor heat converter,
Wherein the revolution of control room external fan is by this way promptly controlled the air-conditioner that operates in first operating space and the 3rd operating space, moves it in second operating space.
11. the multi-type air conditioner of refrigeration-heat supply according in the claim 6 time, wherein distributor comprises liquid header, low pressure discharge and high-pressure gas collection pipe.
12. the multi-type air conditioner of refrigeration-heat supply according in the claim 11 time also comprises:
The liquid refrigerant pipe is connected between the outdoor unit and liquid header that refrigeration-heat supply is used in combination;
The low pressure tracheae is connected between the outdoor unit and low pressure discharge that refrigeration-heat supply is used in combination;
High-pressure air pipe is connected between the outdoor unit and high-pressure gas collection pipe that refrigeration-heat supply is used in combination.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060101754 | 2006-10-19 | ||
| KR10-2006-0101754 | 2006-10-19 | ||
| KR1020060101754A KR101176482B1 (en) | 2006-10-19 | 2006-10-19 | Multi-air conditioner for heating and cooling operations at the same time |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101165411A true CN101165411A (en) | 2008-04-23 |
| CN101165411B CN101165411B (en) | 2011-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610170068XA Expired - Fee Related CN101165411B (en) | 2006-10-19 | 2006-12-15 | Simultaneous cooling-heating multiple type air conditioner |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20080092572A1 (en) |
| EP (1) | EP1921400B1 (en) |
| KR (1) | KR101176482B1 (en) |
| CN (1) | CN101165411B (en) |
| AU (1) | AU2006349942A1 (en) |
| WO (1) | WO2008047968A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747453A (en) * | 2015-02-07 | 2015-07-01 | 宁波鲍斯能源装备股份有限公司 | Two-stage screw compressor discharge pressure stabilizing device and two-stage screw compressor discharge pressure stabilizing method |
| CN105276776A (en) * | 2015-11-13 | 2016-01-27 | 珠海格力电器股份有限公司 | Control method and system for central air-conditioning module |
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| JP5106536B2 (en) * | 2007-08-28 | 2012-12-26 | 三菱電機株式会社 | Air conditioner |
| CN102272534B (en) * | 2009-01-15 | 2014-12-10 | 三菱电机株式会社 | Air conditioning apparatus |
| JP5377653B2 (en) * | 2009-09-10 | 2013-12-25 | 三菱電機株式会社 | Air conditioner |
| EP2472200B1 (en) * | 2009-10-27 | 2019-01-30 | Mitsubishi Electric Corporation | Air conditioning device |
| KR101153513B1 (en) * | 2010-01-15 | 2012-06-11 | 엘지전자 주식회사 | A refrigerant system and the method of controlling for the same |
| KR101146409B1 (en) * | 2010-02-08 | 2012-05-17 | 엘지전자 주식회사 | A refrigerant system |
| JP5665981B2 (en) * | 2011-06-14 | 2015-02-04 | 三菱電機株式会社 | Air conditioner |
| KR101726073B1 (en) * | 2015-10-01 | 2017-04-11 | 엘지전자 주식회사 | Air conditioning system |
| US20180195794A1 (en) * | 2017-01-12 | 2018-07-12 | Emerson Climate Technologies, Inc. | Diagnostics And Control For Micro Booster Supermarket Refrigeration System |
| CN107477824B (en) * | 2017-09-11 | 2020-02-07 | 珠海格力电器股份有限公司 | Mode converter, heat recovery multi-split air conditioning system and control method |
| CN109682021B (en) * | 2018-12-13 | 2021-05-14 | 青岛海信日立空调系统有限公司 | Outdoor unit protection method and device and air conditioning system |
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| AU636726B2 (en) * | 1990-03-19 | 1993-05-06 | Mitsubishi Denki Kabushiki Kaisha | Air conditioning system |
| US5237833A (en) * | 1991-01-10 | 1993-08-24 | Mitsubishi Denki Kabushiki Kaisha | Air-conditioning system |
| JP3635665B2 (en) * | 1992-05-28 | 2005-04-06 | 三菱電機株式会社 | Air conditioner |
| JP3230845B2 (en) * | 1992-07-10 | 2001-11-19 | 東芝キヤリア株式会社 | Multi-type air conditioner |
| EP1373821A4 (en) * | 2001-03-14 | 2008-06-25 | Showa Denko Kk | Layered heat exchanger, layered evaporator for motor vehicle air conditioners and refrigeration system |
| KR100437804B1 (en) * | 2002-06-12 | 2004-06-30 | 엘지전자 주식회사 | Multi-type air conditioner for cooling/heating the same time and method for controlling the same |
| KR101003356B1 (en) * | 2003-10-21 | 2010-12-23 | 삼성전자주식회사 | Air Conditioner And Control Method Thereof |
| JP4399667B2 (en) | 2004-09-08 | 2010-01-20 | 日立アプライアンス株式会社 | Air conditioner |
| KR100733295B1 (en) * | 2004-12-28 | 2007-06-28 | 엘지전자 주식회사 | Subcooling apparatus for simultaneous cooling and heating type multi-air-conditioner |
| KR100688171B1 (en) * | 2004-12-29 | 2007-03-02 | 엘지전자 주식회사 | Multiple air conditioner and refrigerant withdrawing method |
-
2006
- 2006-10-19 KR KR1020060101754A patent/KR101176482B1/en active IP Right Grant
- 2006-11-06 WO PCT/KR2006/004615 patent/WO2008047968A2/en active Application Filing
- 2006-11-06 AU AU2006349942A patent/AU2006349942A1/en not_active Abandoned
- 2006-12-15 CN CN200610170068XA patent/CN101165411B/en not_active Expired - Fee Related
-
2007
- 2007-03-28 US US11/727,870 patent/US20080092572A1/en not_active Abandoned
- 2007-06-06 EP EP07252278.2A patent/EP1921400B1/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747453A (en) * | 2015-02-07 | 2015-07-01 | 宁波鲍斯能源装备股份有限公司 | Two-stage screw compressor discharge pressure stabilizing device and two-stage screw compressor discharge pressure stabilizing method |
| CN105276776A (en) * | 2015-11-13 | 2016-01-27 | 珠海格力电器股份有限公司 | Control method and system for central air-conditioning module |
| CN105276776B (en) * | 2015-11-13 | 2018-05-18 | 珠海格力电器股份有限公司 | The control method and system of central air-conditioning module |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20080035271A (en) | 2008-04-23 |
| AU2006349942A1 (en) | 2008-04-24 |
| WO2008047968A2 (en) | 2008-04-24 |
| KR101176482B1 (en) | 2012-08-22 |
| EP1921400A3 (en) | 2015-06-03 |
| US20080092572A1 (en) | 2008-04-24 |
| EP1921400A2 (en) | 2008-05-14 |
| WO2008047968A3 (en) | 2009-05-22 |
| CN101165411B (en) | 2011-09-14 |
| EP1921400B1 (en) | 2018-08-08 |
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