CN105588191A - Indoor unit, air conditioning system and control method - Google Patents
Indoor unit, air conditioning system and control method Download PDFInfo
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- CN105588191A CN105588191A CN201510224394.3A CN201510224394A CN105588191A CN 105588191 A CN105588191 A CN 105588191A CN 201510224394 A CN201510224394 A CN 201510224394A CN 105588191 A CN105588191 A CN 105588191A
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Abstract
The invention discloses an indoor unit, an air conditioning system and a control method, relates to the technical field of air conditioners, and can solve the problem of incapability of normal start of the air conditioning system due to incapability of timely return of a refrigerant to a compressor caused by a longer pipeline between the indoor unit and an outdoor unit in the prior art. When the indoor unit is closed, a liquid collecting electromagnetic valve is closed to enable one part of the refrigerant, discharged from the compressor and passing through a liquid collector, to be stored in the liquid collector; the liquid collector is used for storing the refrigerant, passing through the liquid collector, when the indoor unit is closed; a liquid return electromagnetic valve is used for controlling the refrigerant to flow to the liquid collector from the outdoor unit; and the liquid collecting electromagnetic valve is also used for enabling the refrigerant in the liquid collector to pass through the liquid collecting electromagnetic valve and to return into the compressor through a throttling device and an evaporator in sequence when the indoor unit is opened. The indoor unit is used for starting the compressor.
Description
Technical field
The present invention relates to air-conditioning technical field, relate in particular to a kind of indoor set, air-conditioning system and controlMethod processed.
Background technology
Depositing in the machine room of the electronic equipments such as all kinds of computers, conventionally adopt split-type air conditioner systemSystem freezes, thereby provides the working environment of a constant temperature for the electronic equipment in machine room. ItsIn, SPLIT AIR-CONDITIONING SYSTEM is the air-conditioning system connecting by long pipe runs between off-premises station and indoor setSystem. At present, for the air-conditioning system in building, most machine rooms are arranged on middle part, building,In order to meet urban planning requirement attractive in appearance, off-premises station is arranged on the attic in building conventionally, like thisCan make the pipeline between indoor set and off-premises station long. As shown in Figure 1, the air-conditioning of long pipe runsSystem 10 comprises indoor set 101 and off-premises station 102, between indoor set 101 and off-premises station 102Connect by pipeline, indoor set 101 is positioned at the below of off-premises station 102, certainly, and indoor set 101The top that also can be positioned at off-premises station 102, indoor set 101 comprises compressor 1011, throttling dressPut 1012, and evaporimeter 1013; Off-premises station 102 comprises and condenser 1021. Work as air-conditioning system10 in the time of refrigerating state, and cold-producing medium, through after compressor 1011 compressions, becomes HTHPGas, the gas of HTHP enters condenser 1021, under the effect of condenser 1021, becomesBecome the liquid of HTHP, the liquid of HTHP enters into the throttling dress of indoor set through pipelinePut 1012, throttling arrangement 1012 has the effect of reducing pressure by regulating flow, and the liquid of HTHP is through celebrating a festivalThe liquid that becomes low-temp low-pressure after stream device 1012, the liquid of low-temp low-pressure enters evaporimeter1013, under the effect of evaporimeter 1013, heat absorption becomes the gas of low-temp low-pressure, falls thereby reachThe object of low indoor temperature, afterwards, the gas of low-temp low-pressure returns in compressor 1011, followsRing refrigeration.
But, in the process of moving in this pipeline air-conditioning system 10, due to indoor set 101 and chamberPipeline between outer machine 102 is longer, and in the larger situation of drop, discharges from compressor 1011Cold-producing medium because pipe resistance is larger, can not get back in time in compressor 1011, can makeShort of refrigerant in compressor 1011 and cause air-conditioning system 10 normally to start.
Summary of the invention
Embodiments of the invention provide a kind of indoor set, air-conditioning system and control method, can separateIn the prior art of determining, in the time that the pipeline between indoor set and off-premises station is longer, cold-producing medium can not be timelyGet back in compressor, thereby the problem that causes air-conditioning system normally to start.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, the invention provides a kind of indoor set, and described indoor set is by pipeline and chamberOuter machine connects, and comprises compressor, throttling arrangement and evaporimeter, and the outlet side of described compressor is logicalCross described pipeline and be connected with the arrival end of described off-premises station, the port of export of described off-premises station passes through instituteState pipeline and be connected with the air return end of described compressor, from the port of export of described off-premises station to described pressureOn pipeline between the air return end of contracting machine, be disposed with described throttling arrangement and described evaporimeter,Also comprise: establish successively to the pipeline described throttling arrangement from the port of export of described off-premises stationBe equipped with described liquid electromagnetic valve, described liquid trap and the described liquid collecting magnetic valve of returning;
Described liquid collecting magnetic valve, for cutting out in the time that described indoor set shuts down, makes from described pressureThe part cold-producing medium of the described liquid trap of process that contracting machine is discharged is stored in described liquid trap;
Described liquid trap, for the system of the described liquid trap of storage process in the time that described indoor set shuts downCryogen;
Described time liquid electromagnetic valve, flows to described liquid trap for controlling cold-producing medium by described off-premises station;
Described liquid collecting magnetic valve, also, for opening in the time that described indoor set is started shooting, makes described collectionCold-producing medium in liquid device is by described liquid collecting magnetic valve, and passes through successively described throttling arrangement and instituteState evaporimeter, get back in described compressor.
Second aspect, the invention provides a kind of air-conditioning system, comprising:
Indoor set, described indoor set is the described indoor set that first aspect is described.
The third aspect, the invention provides a kind of control method, is applied to controller, described controlDevice is contained in air-conditioning system, and described controller is controlled described air-conditioning system, described air-conditioningThe described described air-conditioning system of system second aspect, described method comprises:
In the time of the shutdown of described indoor set, described controller control liquid collecting closed electromagnetic valve, make fromThe part cold-producing medium of the described liquid trap of process that described compressor is discharged is stored in described liquid trapIn;
In the time of described indoor set shutdown, described controller control liquid trap storage is through described liquid collectingThe cold-producing medium of device;
Described controller control is flowed to by described off-premises station by the cold-producing medium of described time liquid electromagnetic valveDescribed liquid trap;
In the time of the start of described indoor set, liquid collecting magnetic valve is opened described in described controller control, makesThe cold-producing medium in described liquid trap by described liquid collecting magnetic valve, and pass through successively described throttlingDevice and described evaporimeter, get back in described compressor.
Indoor set, air-conditioning system and control method that the embodiment of the present invention provides, liquid collecting magnetic valveFor closing, make the part system through liquid trap of discharging from compressor in the time that indoor set shuts downCryogen is stored in liquid trap; Liquid trap passes through liquid trap for storing when indoor set shut downCold-producing medium; Returning liquid electromagnetic valve is used for controlling cold-producing medium and flows to liquid trap by off-premises station; Liquid collecting electromagnetismValve is also for opening in the time that indoor set is started shooting, and makes cold-producing medium in liquid trap by liquid collecting electromagnetismValve, and pass through successively throttling arrangement and evaporimeter, get back in compressor. So, at skyModulate in cold process, cold-producing medium, through after compressor compresses, becomes the gas of HTHPEnter off-premises station, under the effect of off-premises station, become the liquid of HTHP, the liquid of HTHPBody enters the liquid trap of indoor set, in the time that indoor set shuts down, and liquid collecting closed electromagnetic valve, like this,Cold-producing medium through liquid trap will be stored in liquid trap, owing to returning liquid electromagnetic valve control refrigerationAgent flows to liquid trap by off-premises station, can prevent that back flow of refrigerant in liquid trap is in off-premises station,Therefore,, in the time that compressor starts again,, in the time that indoor set is started shooting again, liquid collecting magnetic valve is beatenOpen, just can make the cold-producing medium of the HTHP in liquid trap by liquid collecting magnetic valve, enterThrottling arrangement becomes the liquid of low-temp low-pressure, and the liquid of low-temp low-pressure absorbs heat through evaporimeter again,The gas that becomes low-temp low-pressure is got back in compressor. By cold-producing medium is stored in liquid trap,Make in the time that compressor starts again, the cold-producing medium in liquid trap can be got back to compressor rapidlyIn, need not pass through again off-premises station, can solve in prior art and work as between indoor set and off-premises stationPipeline when longer, cold-producing medium can not be got back in compressor in time, thereby causes air-conditioning systemThe problem that cannot normally start.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below will be to embodiment orIn description of the Prior Art, the accompanying drawing of required use is briefly described, apparently, belowAccompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain other according to these accompanying drawingsAccompanying drawing.
Air-conditioning system structural representation in a kind of prior art that Fig. 1 provides for the present embodiment;
A kind of indoor machine structure schematic diagram that Fig. 2 provides for the embodiment of the present invention;
The another kind of indoor machine structure schematic diagram that Fig. 3 provides for the embodiment of the present invention;
A kind of air-conditioning system structural representation that Fig. 4 provides for the embodiment of the present invention;
A kind of control method schematic flow sheet that Fig. 5 provides for the present embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical side in the embodiment of the present inventionCase is clearly and completely described, and obviously, described embodiment is only one of the present inventionDivide embodiment, instead of whole embodiment. Based on the embodiment in the present invention, this area is generalLogical technical staff is not making the every other embodiment obtaining under creative work prerequisite,All belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of indoor set 101, and as shown in Figure 2, indoor set 101 passes throughPipeline is connected with off-premises station, and off-premises station can be arranged on the top of indoor set 101, also can establishPut below indoor set 101, at this, the upper-lower position for indoor set 101 with off-premises stationRelation, the present invention does not do concrete restriction. The indoor set 101 that the embodiment of the present invention provides, comprises pressureContracting machine 1011, throttling arrangement 1012 and evaporimeter 1013, the outlet side of compressor 1011 is passed throughPipeline is connected with the arrival end 1017 of off-premises station, the port of export 1018 of off-premises station by pipeline withThe air return end of compressor 1011 connects, from the port of export 1018 of off-premises station to compressor 1011On pipeline between air return end, be disposed with throttling arrangement 1012 and evaporimeter 1013, also comprise:Be disposed with back to the pipeline throttling arrangement 1012 from the port of export 1018 of off-premises stationLiquid electromagnetic valve 1014, liquid trap 1015 and liquid collecting magnetic valve 1016.
Liquid collecting magnetic valve 1016, for cutting out in the time that indoor set 101 shuts down, makes from compressorThe 1011 part cold-producing mediums through liquid trap 1015 of discharging are stored in liquid trap 1015.
In the time that indoor set 101 shuts down, when compressor 1011 is out of service, liquid collecting magnetic valve 1016Close, so just can prevent that refrigerant liquid through liquid trap 1015 is by liquid collecting magnetic valve1016 flow out, thereby make can be stored in liquid trap through the refrigerant liquid of liquid trap 1015In 1015, so that compressor 1011 is while again starting, the refrigerant liquid in liquid trap 1015Can get back to rapidly in compressor 1011, ensure the normal startup of compressor 1011.
Liquid trap 1015, while shutdown for indoor set 101, storage is through the refrigeration of liquid trap 1015Agent.
In air-conditioning system during in refrigerating state, cold-producing medium is through after compressor 1011 compressions,Become the gas of HTHP, the gas of HTHP is through off-premises station, becomes HTHPLiquid, then enter into the liquid trap 1015 of indoor set 101, now, in liquid trap 1015What store is the liquid refrigerant of HTHP.
Return liquid electromagnetic valve 1014, flow to liquid trap 1015 for controlling cold-producing medium by off-premises station.
Optionally, returning liquid electromagnetic valve 1014 is the first Unidirectional solenoid valve or the first bidirectional electromagnetic valve.
Wherein, when returning liquid electromagnetic valve 1014 while being the first Unidirectional solenoid valve, the direction of its installation withFlowing to of cold-producing medium is identical, and cold-producing medium only flows to institute by off-premises station by the first Unidirectional solenoid valveState liquid trap 1015, and can not be by the liquid trap of indoor set 101 1015 by the first unidirectional electromagnetismValve flows to off-premises station.
In the time that time liquid electromagnetic valve 1014 is the first bidirectional electromagnetic valve:
The first bidirectional electromagnetic valve, for closing in the time that indoor set 101 shuts down, makes to be stored in collectionCold-producing medium in liquid device 1015 cannot be back in off-premises station by the first bidirectional electromagnetic valve.
In the time that indoor set 101 shuts down, when compressor 1011 is out of service, the first bi-directional electromagneticValve cuts out, and so just can prevent from being stored in cold-producing medium in liquid trap 1015 two-way by firstMagnetic valve is back in off-premises station.
The first bidirectional electromagnetic valve, also, for opening in the time that indoor set 101 is started shooting, makes off-premises stationIn cold-producing medium by the first bidirectional electromagnetic valve.
In the time that indoor set 101 is started shooting, when compressor 1011 starts after out of service again,The first bidirectional electromagnetic valve is opened, and just can make the cold-producing medium of discharging from compressor 1011 through chamberOuter machine, enters indoor set 101, then enters liquid trap 1015 by the first bidirectional electromagnetic valve, protectsCard Air Conditioning Cycle refrigeration.
Liquid collecting magnetic valve 1016, also, for opening in the time that indoor set 101 is started shooting, makes liquid trapCold-producing medium in 1015 is by liquid collecting magnetic valve 1016, and pass through successively throttling arrangement 1012 andEvaporimeter 1013, gets back in compressor 1011.
Wherein, throttling arrangement 1012 can be electric expansion valve, can be also other throttling arrangements1012, at this, for throttling arrangement 1012 specifically what, the present invention does not limit.
In the time that indoor set 101 is started shooting, when compressor 1011 starts again, liquid collecting magnetic valve 1016Open, the cold-producing medium being stored in like this in liquid trap 1015 just can be by liquid collecting magnetic valve 1016Enter into throttling arrangement 1012, become the liquid of low-temp low-pressure, the liquid refrigerating of low-temp low-pressureAgent is absorbed heat through evaporimeter 1013 again, and the gas that becomes low-temp low-pressure is got back to compressor rapidlyIn 1011, ensure the normal startup of compressor 1011.
So, in the process of air conditioner refrigerating, 1011 compressions of cold-producing medium process compressorAfter, the gas that becomes HTHP enters off-premises station, becomes high temperature high under the effect of off-premises stationThe liquid of pressing, the liquid of HTHP enters the liquid trap 1015 of indoor set 101, works as indoor setWhen 101 shutdown, liquid collecting magnetic valve 1016 cuts out, like this, and through the cold-producing medium of liquid trap 1015Will be stored in liquid trap 1015, control cold-producing medium by outdoor owing to returning liquid electromagnetic valve 1014Machine flows to liquid trap 1015, can prevent that back flow of refrigerant in liquid trap 1015 is in off-premises station,Therefore, in the time that compressor 1011 starts again, in the time that indoor set 101 is started shooting again, liquid collectingMagnetic valve 1016 is opened, and just can make the cold-producing medium of the HTHP in liquid trap 1015 logicalCross liquid collecting magnetic valve 1016, enter throttling arrangement 1012 and become the liquid of low-temp low-pressure, low temperature is lowThe liquid of pressing absorbs heat through evaporimeter 1013 again, and the gas that becomes low-temp low-pressure is got back to compressorIn 1011. By cold-producing medium is stored in liquid trap 1015, make to work as compressor 1011 againWhen inferior startup, the cold-producing medium in liquid trap 1015 can be got back in compressor 1011 rapidly,Need not pass through again off-premises station, can solve in prior art and work as between indoor set 101 and off-premises stationPipeline when longer, cold-producing medium can not be got back in compressor 1011 in time, thereby causes air-conditioningThe problem that system cannot normally start.
In addition, compared with outdoor temperature, indoor temperature is lower, therefore, and by by liquid trap 1015Be arranged in indoor set 101, like this in liquid trap 1015 cold-producing medium to the refrigeration in pipeline relativelyAgent, its temperature is lower, in the time that the cold-producing medium in pipeline enters into liquid trap 1015, withRefrigerant mixed in liquid trap 1015, can reduce the temperature of cold-producing medium in pipeline, reachesCold object, thus the cold-producing medium shwoot in pipeline avoided.
Optionally, as shown in Figure 3, indoor set 101 also comprises: oil eliminator 1019 and oil returnCapillary 1020, the first end of oil eliminator 1019 is connected with the outlet side of compressor 1011,The second end of oil eliminator 1019 is connected with the arrival end 1017 of off-premises station, oil eliminator 1019The 3rd end be connected with one end of oil return capillary 1020, the other end of oil return capillary 1020Pipeline between the air return end of UNICOM's compressor 1011 and evaporimeter 1013.
Oil eliminator 1019, for discharging and enter oil from compressor 1011 at cold-producing medium and refrigeration oilAfter separator 1019, cold-producing medium and refrigeration oil are separated.
In the running of air-conditioning system, because the refrigeration oil of compressor 1011 is stored in compressionThe bottom of machine 1011, so the part refrigeration oil in compressor 1011 can be along with cold-producing medium oneRise and discharge, enter into off-premises station through pipe arrangement, afterwards, then enter indoor set 10 through pipe arrangement,And pass through successively throttling arrangement 1012 and the evaporimeter 1013 in indoor set 101, return compressionIn machine 1011. In the present embodiment, off-premises station is connected by pipeline with indoor set 101, due toPipeline is long and resistance is larger, causes the flow velocity of cold-producing medium to slow down, and discharges like this with cold-producing mediumRefrigeration oil just can not be along with cold-producing medium is got back in compression fast, because compressor 1011 is freezingOil has the effect of lubricate compressors 1011, only has when returning with the part refrigeration oil of cold-producing medium dischargeIn compressor 1011, the normal operation of guarantee compressor 1011, otherwise, fortune for a long timeRow compressor 1011 can cause compressor 1011 to damage. By oil being set in indoor set 101Separator 1019, enters into cold-producing medium and the part refrigeration oil of from compressor 1011, dischargingIn oil eliminator 1019, oil eliminator 1019 can be separated cold-producing medium and refrigeration oil, coldFreeze the bottom that oil can be stored in the form of liquid oil eliminator 1019, cold-producing medium can be with gasMode be stored in the top of oil eliminator 1019, so, row from compressor 1011The cold-producing medium going out and refrigeration oil just can not enter into off-premises station, but are stored in indoor set 101Oil eliminator 1019 in, make the refrigeration oil of discharging from compressor 1011 need not enter into chamberOuter machine, thus can get back in time in compressor 1011.
Oil return capillary 1020, for the refrigeration oil of water conservancy diversion oil eliminator 1019, makes freezingOil is got back in compressor 1011 by oil return capillary 1020.
Because the internal diameter of oil return capillary 1020 is less, therefore, the system in oil eliminator 1019Refrigerant gas can not be passed through this oil return capillary 1020, can only flow out and enter from oil eliminator 1019In off-premises station, complete the process of refrigerastion of air-conditioning system, and refrigeration oil in oil eliminator 1019Can get back in compressor 1011 by this oil return capillary 1020, like this, at compressor 1011In part refrigeration oil along with after cold-producing medium discharges together, by arrange oil eliminator 1019 andOil return capillary 1020, can make the cold-producing medium of discharging from compressor 1011 to enter intoIn off-premises station, complete the process of refrigerastion of air-conditioning system. The more important thing is, separate by oil is setDevice 1019 and oil return capillary 1020, can make the refrigeration oil of discharging from compressor 1011 notWith entering off-premises station, thereby get back to rapidly in compressor 1011, play lubricate compressors 1011Effect, prevent that compressor 1011 from damaging because lacking refrigeration oil, thus ensure compressor 1011Normal operation.
Optionally, indoor set 101 also comprises oil strainer 1021, and oil strainer 1021 is arranged onOn pipeline between oil eliminator 1019 and oil return capillary 1020.
Oil strainer 1021, for the impurity of the refrigeration oil of filter oil separator 1019.
Part refrigeration oil in compressor 1011 is along with after cold-producing medium discharges together, because rowIn the part refrigeration oil going out, may comprise oily impurity, by oil strainer 1021 is set, can be byOily contaminant filter in this part refrigeration oil falls, and so just can prevent that oily impurity is by oil return hairTubule 1020 is got back in compressor 1011, causes compressor 1011 to stop up.
Optionally, indoor set 101 also comprises: oil return solenoid valve 1022, oil return solenoid valve 1022Be arranged on the pipeline between oil strainer 1021 and oil return capillary 1020.
Oil return solenoid valve 1022, for beating in the time that compressor reaches first threshold 1011 start-up timesOpen, make to pass through oil return solenoid valve 1022 through the refrigeration oil of oil strainer 1021, get back to compressionIn machine 1011.
Preferably, first threshold can be 5 minutes, can be also 10 minutes, certainly, also canTo arrange according to actual needs, at this, for the occurrence of first threshold, the present invention is notDo any restriction.
In the present embodiment, an oil return solenoid valve 1022 can be set, whether allow for controllingRefrigeration oil in oil strainer 1021 is got back in compressor 1011 by oil return capillary 1020,Preferably, when refrigeration oil that can be in oil eliminator 1019 is more, be generally compressor 1011After starting 5 minutes, oil return solenoid valve 1022 is opened, and makes cold in oil eliminator 1019Freezing oil can get back in compressor 1011 through oil return capillary 1020 rapidly, prevents compressionMachine 1011 damages because lacking refrigeration oil, thereby ensures the normal operation of compressor 1011.
The indoor set that the embodiment of the present invention provides, liquid collecting magnetic valve for closing in the time that indoor set shuts downClose, the part cold-producing medium through liquid trap of discharging from compressor is stored in liquid trap;Liquid trap is for the cold-producing medium of storage process liquid trap in the time that indoor set shuts down; Returning liquid electromagnetic valve usesFlow to liquid trap in controlling cold-producing medium by off-premises station; Liquid collecting magnetic valve is also for starting shooting when indoor setIn time, opens, and makes cold-producing medium in liquid trap by liquid collecting magnetic valve, and successively through throttling dressPut and evaporimeter, get back in compressor. So, in the process of air conditioner refrigerating, refrigerationAgent is through after compressor compresses, and the gas that becomes HTHP enters off-premises station, at off-premises stationEffect under become the liquid of HTHP, the liquid of HTHP enters the liquid trap of indoor set,In the time that indoor set shuts down, liquid collecting closed electromagnetic valve, like this, will through the cold-producing medium of liquid trapBe stored in liquid trap, flow to liquid trap owing to returning liquid electromagnetic valve control cold-producing medium by off-premises station,Can prevent that back flow of refrigerant in liquid trap is in off-premises station, therefore, when compressor opens againWhen moving,, in the time that indoor set is started shooting again, liquid collecting magnetic valve is opened, and just can make liquid trapIn the cold-producing medium of HTHP by liquid collecting magnetic valve, enter throttling arrangement and become low-temp low-pressureLiquid, the liquid of low-temp low-pressure is again through evaporimeter heat absorption, the gas that becomes low-temp low-pressure returnsIn compressor. By cold-producing medium is stored in liquid trap, make again to start when compressorTime, the cold-producing medium in liquid trap can be got back in compressor rapidly, need not pass through off-premises station again,Can solve in prior art in the time that the pipeline between indoor set and off-premises station is longer, cold-producing medium is notCan get back in compressor in time, thus the problem that causes air-conditioning system normally to start.
Based on Fig. 2 and embodiment corresponding to Fig. 3, the embodiment of the present invention provides a kind of air-conditioning system40, as shown in Figure 4, this air-conditioning system 40 comprises indoor set 101.
Wherein, indoor set 101 is the indoor set described in the embodiment that Fig. 2 and Fig. 3 are corresponding101。
Optionally, this air-conditioning system 40 can also comprise off-premises station 102, and off-premises station 102 passes throughPipeline is connected with indoor set 101. Off-premises station 102 can be arranged on the top of indoor set 101,Also can be arranged on the below of indoor set 101, at this, for indoor set 101 and off-premises station 102Upper-lower position relation, the present invention does not do concrete restriction.
Further, off-premises station 102 can comprise exhaust solenoid valve 1022 and condenser 1021,The first end of exhaust solenoid valve 1022 is connected with the port of export of indoor set 101, exhaust solenoid valveThe second end of 1022 is connected with the first end of condenser 1021, the second end of condenser 1021 withThe arrival end of indoor set 101 connects.
Exhaust solenoid valve 1022, flows to condenser 1021 for controlling cold-producing medium by indoor set 101.
Optionally, exhaust solenoid valve 1022 is the second Unidirectional solenoid valve or the second bidirectional electromagnetic valve.
Wherein, in the time that exhaust solenoid valve 1022 is the second Unidirectional solenoid valve, the direction of its installation withFlowing to of cold-producing medium is identical, and cold-producing medium is only flowed by the second Unidirectional solenoid valve by indoor set 101To the condenser 1021 of off-premises station 102, and can not be logical by the condenser 1021 in off-premises station 102Cross the second Unidirectional solenoid valve and flow to off-premises station 102.
In the time that exhaust solenoid valve 1022 is the second bidirectional electromagnetic valve,
The second bidirectional electromagnetic valve, for closing in the time that indoor set 101 shuts down, makes condenser 1021In cold-producing medium cannot get back in indoor set 101 by the second bidirectional electromagnetic valve.
In the time that indoor set 101 shuts down, when compressor is out of service, the second bidirectional electromagnetic valve closesClose, so just can prevent that the cold-producing medium in condenser 1021 from refluxing by the second bidirectional electromagnetic valveIn the compressor of indoor set 101, because the refrigerant amount in indoor set 101 too much causes pressingContracting machine can not normally start.
The second bidirectional electromagnetic valve, also, for opening in the time that indoor set 101 is started shooting, makes from indoorThe cold-producing medium that machine 101 is discharged is by the second bidirectional electromagnetic valve, and process condenser 1021 is got back to chamberIn interior machine 101.
In the time that indoor set 101 is started shooting, when compressor starts after out of service again, secondBidirectional electromagnetic valve is opened, the cold-producing medium that just can make the compressor from indoor set 101 dischargeEnter condenser 1021 by the second bidirectional electromagnetic valve, become height through the effect of condenser 1021The liquid of temperature high pressure enters into indoor set 101, thereby ensures the circularly cooling of air-conditioning system 40.
The air-conditioning system that the embodiment of the present invention provides, comprising: indoor set and off-premises station, and at air-conditioningIn the process of refrigeration, cold-producing medium is through after compressor compresses, and the gas that becomes HTHP entersEnter off-premises station, under the effect of off-premises station, become the liquid of HTHP, the liquid of HTHPEnter the liquid trap of indoor set, in the time that indoor set shuts down, liquid collecting closed electromagnetic valve, like this, warpThe cold-producing medium of crossing liquid trap will be stored in liquid trap, owing to returning liquid electromagnetic valve control cold-producing mediumFlow to liquid trap by off-premises station, can prevent that back flow of refrigerant in liquid trap is in off-premises station,Therefore,, in the time that compressor starts again,, in the time that indoor set is started shooting again, liquid collecting magnetic valve is beatenOpen, just can make the cold-producing medium of the HTHP in liquid trap by liquid collecting magnetic valve, enterThrottling arrangement becomes the liquid of low-temp low-pressure, and the liquid of low-temp low-pressure absorbs heat through evaporimeter again,The gas that becomes low-temp low-pressure is got back in compressor. By cold-producing medium is stored in liquid trap,Make in the time that compressor starts again, the cold-producing medium in liquid trap can be got back to compressor rapidlyIn, need not pass through again off-premises station, can solve in prior art and work as between indoor set and off-premises stationPipeline when longer, cold-producing medium can not be got back in compressor in time, thereby causes air-conditioning systemThe problem that cannot normally start.
Based on Fig. 2, Fig. 3 and embodiment corresponding to Fig. 4, the embodiment of the present invention provides a kind of and controlsMethod, as shown in Figure 5, is applied to controller, and controller is contained in air-conditioning system, controllerAir-conditioning system is controlled, and air-conditioning system is the air-conditioning described in the embodiment that Fig. 4 is correspondingSystem, method comprises:
501, in the time that indoor set shuts down, controller control liquid collecting closed electromagnetic valve.
In the time that indoor set shuts down, when compressor is out of service, controller control liquid collecting magnetic valveClose, so just can prevent from flowing out by liquid collecting magnetic valve through the refrigerant liquid of liquid trap,Thereby make can be stored in liquid trap through the refrigerant liquid of liquid trap, so that compressorWhile again startup, the refrigerant liquid in liquid trap can be got back in compressor rapidly, ensuresThe normal startup of compressor.
502,, in the time that indoor set shuts down, the storage of controller control liquid trap is through the refrigeration of liquid trapAgent.
In air-conditioning system, during in refrigerating state, cold-producing medium, through after compressor compresses, becomesThe gas of HTHP, the gas of HTHP, through off-premises station, becomes the liquid of HTHP,Enter into the liquid trap of indoor set, now, what in liquid trap, store is the liquid of HTHP againCryogen.
503, controller control flows to liquid trap by the cold-producing medium that returns liquid electromagnetic valve by off-premises station.
Optionally, returning liquid electromagnetic valve is the first Unidirectional solenoid valve or the first bidirectional electromagnetic valve.
Wherein, in the time that time liquid electromagnetic valve is the first Unidirectional solenoid valve, the direction of its installation and refrigerationFlowing to of agent is identical, and cold-producing medium only flows to indoor set by off-premises station by the first Unidirectional solenoid valveLiquid trap, and can not flow to off-premises station by the first Unidirectional solenoid valve by the liquid trap of indoor set.
In the time that indoor set shuts down, controller control the first bidirectional electromagnetic valve is closed, and makes to be stored inCold-producing medium in liquid trap cannot be back in off-premises station by the first bidirectional electromagnetic valve.
In the time that indoor set shuts down, when compressor is out of service, the two-way electricity of controller control firstMagnet valve is closed, and the cold-producing medium that so just can prevent from being stored in liquid trap passes through the first two-way electricityMagnet valve is back in off-premises station.
In the time that indoor set is started shooting, controller control the first bidirectional electromagnetic valve is opened, and makes off-premises stationIn cold-producing medium by the first bidirectional electromagnetic valve.
In the time that indoor set is started shooting, when compressor starts after out of service again, controller controlMake the first bidirectional electromagnetic valve and open, just can make the cold-producing medium of discharging from compressor through outdoorMachine, enters indoor set, then enters liquid trap by the first bidirectional electromagnetic valve, ensures air-conditioning systemCircularly cooling.
504,, in the time that indoor set is started shooting, controller control liquid collecting magnetic valve is opened.
In the time that indoor set is started shooting, controller control liquid collecting magnetic valve is opened the system making in liquid trapCryogen is by liquid collecting magnetic valve, and passes through successively throttling arrangement and evaporimeter, gets back in compressor.
Wherein, throttling arrangement can be electric expansion valve, can be also other throttling arrangements,This, for throttling arrangement specifically what, the present invention does not limit.
In the time that indoor set is started shooting, when compressor starts again, controller control liquid collecting magnetic valveOpen, the cold-producing medium being stored in like this in liquid trap just can enter into joint by liquid collecting magnetic valveIn stream device, become the liquid of low-temp low-pressure, the liquid refrigerant of low-temp low-pressure is again through pervaporationDevice heat absorption, the gas that becomes low-temp low-pressure is got back in compressor rapidly, is just ensureing compressorNormal startup.
Optionally, discharge and enter oil eliminator from compressor at cold-producing medium and refrigeration oil, controlDevice control control oil eliminator is separated cold-producing medium and refrigeration oil.
Refrigeration oil in controller control oil eliminator, by oil return capillary, makes refrigeration oil logicalCrossing oil return capillary gets back in compressor.
Optionally, the impurity of the refrigeration oil in controller control oil strainer filter oil separator.
Optionally, in the time that the compressor start time reaches first threshold, controller control oil return electricityMagnet valve is opened, and makes to pass through oil return solenoid valve through the refrigeration oil of oil strainer, gets back to compressorIn.
Optionally, air-conditioning system also comprises off-premises station, and off-premises station is connected with indoor set by pipeline,Method also comprises:
Controller control flows to condenser by the cold-producing medium of exhaust solenoid valve by indoor set.
Optionally, exhaust solenoid valve is the second Unidirectional solenoid valve or the second bidirectional electromagnetic valve.
Controller control cold-producing medium only flows to condenser by indoor set by the second Unidirectional solenoid valve.
In the time that indoor set shuts down, controller control the second bidirectional electromagnetic valve is closed, and makes condenserIn cold-producing medium cannot get back in indoor set by the second bidirectional electromagnetic valve.
In the time that indoor set is started shooting, controller control the second bidirectional electromagnetic valve is opened, and makes from indoorThe cold-producing medium that machine is discharged is by the second bidirectional electromagnetic valve, and process condenser is got back in indoor set.
The control method that the embodiment of the present invention provides, is applied to controller, and controller is contained in skyAdjusting system, controller is controlled air-conditioning system, comprising: in the time that indoor set shuts down, controlDevice control liquid collecting closed electromagnetic valve, makes the refrigeration of the part through liquid trap of discharging from compressorAgent is stored in liquid trap; In the time that indoor set shuts down, the storage of controller control liquid trap is through collectionThe cold-producing medium of liquid device; The cold-producing medium that liquid electromagnetic valve is passed through back in controller control flows to collection by off-premises stationLiquid device; In the time that indoor set is started shooting, controller control liquid collecting magnetic valve is opened, and makes in liquid trapCold-producing medium by liquid collecting magnetic valve, and pass through successively throttling arrangement and evaporimeter, get back to compressionIn machine. So, in the process of air conditioner refrigerating, after cold-producing medium process compressor compresses,The gas that becomes HTHP enters off-premises station, becomes HTHP under the effect of off-premises stationLiquid, the liquid of HTHP enters the liquid trap of indoor set, in the time that indoor set shuts down, liquid collectingClosed electromagnetic valve, like this, will be stored in liquid trap through the cold-producing medium of liquid trap, due toReturn liquid electromagnetic valve control cold-producing medium and flow to liquid trap by off-premises station, can prevent the system in liquid trapCryogen is back in off-premises station, therefore, in the time that compressor starts again, works as indoor set againWhen start, liquid collecting magnetic valve is opened, and just can make the cold-producing medium of the HTHP in liquid trapBy liquid collecting magnetic valve, enter throttling arrangement and become the liquid of low-temp low-pressure, the liquid of low-temp low-pressureBody is again through evaporimeter heat absorption, and the gas that becomes low-temp low-pressure is got back in compressor. By makingCryogen is stored in liquid trap, makes in the time that compressor starts again the cold-producing medium in liquid trapCan get back to rapidly in compressor, need not pass through again off-premises station, can solve in prior artIn the time that the pipeline between indoor set and off-premises station is longer, cold-producing medium can not be got back to compressor in timeIn, thereby the problem that causes air-conditioning system normally to start.
Finally it should be noted that: above embodiment is only in order to technical scheme of the present invention to be described, andNon-to its restriction; Although the present invention is had been described in detail with reference to previous embodiment, abilityThe those of ordinary skill in territory is to be understood that: the skill that it still can be recorded aforementioned each embodimentArt scheme is modified, or part technical characterictic is wherein equal to replacement; And these are repaiiedChange or replace, not making the essence of appropriate technical solution depart from various embodiments of the present invention technical sideThe spirit and scope of case.
Claims (15)
1. an indoor set, described indoor set is connected with off-premises station by pipeline, comprise compressor,Throttling arrangement and evaporimeter, the outlet side of described compressor is by described pipeline and described off-premises stationArrival end connect, the port of export of described off-premises station by described pipeline and described compressor timeGas end connects, from the port of export of described off-premises station to the pipeline the air return end of described compressorOn be disposed with described throttling arrangement and described evaporimeter, it is characterized in that, also comprise: fromThe port of export of described off-premises station is disposed with described returning to the pipeline between described throttling arrangementLiquid electromagnetic valve, described liquid trap and described liquid collecting magnetic valve;
Described liquid collecting magnetic valve, for cutting out in the time that described indoor set shuts down, makes from described pressureThe part cold-producing medium of the described liquid trap of process that contracting machine is discharged is stored in described liquid trap;
Described liquid trap, for storage when when the shutdown of described indoor set through described liquid trapCold-producing medium;
Described time liquid electromagnetic valve, flows to described liquid trap for controlling cold-producing medium by described off-premises station;
Described liquid collecting magnetic valve, also, for opening in the time that described indoor set is started shooting, makes described collectionCold-producing medium in liquid device is by described liquid collecting magnetic valve, and passes through successively described throttling arrangement and instituteState evaporimeter, get back in described compressor.
2. indoor set according to claim 1, is characterized in that,
Described time liquid electromagnetic valve is the first Unidirectional solenoid valve or the first bidirectional electromagnetic valve;
In the time that described time liquid electromagnetic valve is the first Unidirectional solenoid valve, cold-producing medium is only by described off-premises stationFlow to described liquid trap by described the first Unidirectional solenoid valve;
In the time that described time liquid electromagnetic valve is described the first bidirectional electromagnetic valve,
Described the first bidirectional electromagnetic valve, for closing in the time that described indoor set shuts down, makes storageCold-producing medium in described liquid trap cannot be back to off-premises station by described the first bidirectional electromagnetic valveIn;
Described the first bidirectional electromagnetic valve, also, for opening in the time that described indoor set is started shooting, makes instituteThe cold-producing medium of stating in off-premises station passes through described the first bidirectional electromagnetic valve.
3. indoor set according to claim 1, is characterized in that, described indoor set also wrapsDraw together: oil eliminator and oil return capillary, the first end of described oil eliminator connects and described compressionThe outlet side of machine connects, and the second end of described oil eliminator is connected with the arrival end of described off-premises station,The 3rd section of described oil eliminator is connected with described oil return one end capillaceous, described oil return capillaryPipeline described in the other end UNICOM of pipe between air return end and the described evaporimeter of compressor;
Described oil eliminator, for described cold-producing medium and refrigeration oil from described compressor discharge intoEnter after described oil eliminator, described cold-producing medium and described refrigeration oil are separated;
Described oil return capillary, for the refrigeration oil of oil eliminator described in water conservancy diversion, described in makingRefrigeration oil is got back in described compressor by described oil return capillary.
4. indoor set according to claim 3, is characterized in that, described indoor set also wrapsOil scraper filter, described oil strainer be arranged on described oil eliminator and described oil return capillary itBetween pipeline on;
Described oil strainer, for filtering the impurity of refrigeration oil of described oil eliminator.
5. indoor set according to claim 4, is characterized in that, described indoor set also wrapsDraw together: oil return solenoid valve, described oil return solenoid valve is arranged on described oil strainer and described oil return hairOn pipeline between tubule;
Described oil return solenoid valve, for beating in the time that the described compressor start time reaches first thresholdOpen, make to pass through described oil return solenoid valve through the refrigeration oil of described oil strainer, described in getting back toIn compressor.
6. an air-conditioning system, is characterized in that, comprising:
Indoor set, described indoor set is the indoor set described in claim 1-5 any one.
7. air-conditioning system according to claim 6, is characterized in that, described air-conditioning systemAlso comprise:
Off-premises station, described off-premises station is connected with described indoor set by pipeline;
Described off-premises station comprises exhaust solenoid valve and condenser, the first end of described exhaust solenoid valveBe connected the second end of described exhaust solenoid valve and described condenser with the port of export of described indoor setFirst end connect, the second end of described condenser is connected with the arrival end of described indoor set;
Described exhaust solenoid valve, flows to described condenser for controlling cold-producing medium by indoor set.
8. air-conditioning system according to claim 7, is characterized in that,
Described exhaust solenoid valve is the second Unidirectional solenoid valve or the second bidirectional electromagnetic valve;
In the time that described exhaust solenoid valve is described the second Unidirectional solenoid valve, cold-producing medium is only by described chamberInterior machine flows to described condenser by described the second Unidirectional solenoid valve;
In the time that described exhaust solenoid valve is described the second bidirectional electromagnetic valve,
Described the second bidirectional electromagnetic valve, for closing in the time that described indoor set shuts down, described in makingCold-producing medium in condenser cannot be got back in described indoor set by described the second bidirectional electromagnetic valve;
Described the second bidirectional electromagnetic valve, also for opening when the start of described indoor set, make fromThe cold-producing medium that described indoor set is discharged is by described the second bidirectional electromagnetic valve, and the described condensation of processDevice is got back in described indoor set.
9. a control method, is characterized in that, is applied to controller, and described controller comprisesIn air-conditioning system, described controller is controlled described air-conditioning system, and described air-conditioning system isAir-conditioning system described in claim 6-8 any one, described method comprises:
In the time of the shutdown of described indoor set, described controller control liquid collecting closed electromagnetic valve, make fromThe part cold-producing medium of the described liquid trap of process that described compressor is discharged is stored in described liquid trapIn;
In the time of described indoor set shutdown, described controller control liquid trap storage is through described liquid collectingThe cold-producing medium of device;
Described controller control is flowed to by described off-premises station by the cold-producing medium of described time liquid electromagnetic valveDescribed liquid trap;
In the time of the start of described indoor set, liquid collecting magnetic valve is opened described in described controller control, makesThe cold-producing medium in described liquid trap by described liquid collecting magnetic valve, and pass through successively described throttlingDevice and described evaporimeter, get back in described compressor.
10. method according to claim 9, is characterized in that,
Described time liquid electromagnetic valve is the first Unidirectional solenoid valve or the first bidirectional electromagnetic valve;
Described controller control cold-producing medium only passes through described the first Unidirectional solenoid valve by described off-premises stationFlow to described liquid trap;
In the time of the shutdown of described indoor set, the first bidirectional electromagnetic valve is closed described in described controller control,The cold-producing medium that makes to be stored in described liquid trap cannot reflux by described the first bidirectional electromagnetic valveIn off-premises station;
In the time of the start of described indoor set, the first bidirectional electromagnetic valve is opened described in described controller control,Make the cold-producing medium in described off-premises station pass through described the first bidirectional electromagnetic valve.
11. methods according to claim 9, is characterized in that,
Discharge and enter described oil eliminator from described compressor at described cold-producing medium and refrigeration oil,Described in described controller control control, oil eliminator separates described cold-producing medium with described refrigeration oilOpen;
Refrigeration oil described in described controller control in oil eliminator is by described oil return capillary,Described refrigeration oil is got back in described compressor by described oil return capillary.
12. methods according to claim 11, is characterized in that,
Described in described controller control, oil strainer filters the assorted of refrigeration oil in described oil eliminatorMatter.
13. methods according to claim 12, is characterized in that,
In the time that the described compressor start time reaches first threshold, return described in described controller controlSolenoid is opened, makes to pass through described oil return solenoid valve through the refrigeration oil of described oil strainer,Get back in described compressor.
14. methods according to claim 9, is characterized in that, described air-conditioning system alsoComprise off-premises station, described off-premises station is connected with described indoor set by pipeline, and described method is also wrappedDraw together:
Described in described controller control is flowed to by indoor set by the cold-producing medium of described exhaust solenoid valveCondenser.
15. methods according to claim 14, is characterized in that,
Described exhaust solenoid valve is the second Unidirectional solenoid valve or the second bidirectional electromagnetic valve;
Described controller control cold-producing medium only passes through described the second Unidirectional solenoid valve by described indoor setFlow to described condenser;
In the time of the shutdown of described indoor set, the second bidirectional electromagnetic valve is closed described in described controller control,Make the cold-producing medium in described condenser to get back to described chamber by described the second bidirectional electromagnetic valveIn interior machine;
In the time of the start of described indoor set, the second bidirectional electromagnetic valve is opened described in described controller control,Make the cold-producing medium of discharging from described indoor set by described the second bidirectional electromagnetic valve, and through instituteStating condenser gets back in described indoor set.
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