CN105605841A - Air conditioning system and defrosting control method thereof - Google Patents

Air conditioning system and defrosting control method thereof Download PDF

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Publication number
CN105605841A
CN105605841A CN201610074236.9A CN201610074236A CN105605841A CN 105605841 A CN105605841 A CN 105605841A CN 201610074236 A CN201610074236 A CN 201610074236A CN 105605841 A CN105605841 A CN 105605841A
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CN
China
Prior art keywords
conditioning system
branch road
air
valve port
valve
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Pending
Application number
CN201610074236.9A
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Chinese (zh)
Inventor
宋分平
吴空
王正兴
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Midea Group Co Ltd, Guangdong Midea Refrigeration Equipment Co Ltd filed Critical Midea Group Co Ltd
Priority to CN201610074236.9A priority Critical patent/CN105605841A/en
Publication of CN105605841A publication Critical patent/CN105605841A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02Defrosting cycles

Abstract

The invention discloses an air conditioning system and a defrosting control method thereof. The air conditioning system comprises a compressor, a reversing assembly, an outdoor heat exchanger, an indoor heat exchanger, a defrosting branch circuit and a heat storage assembly. In the refrigeration or defrosting process of the air conditioning system, a first valve hole is communicated with a second valve hole, and a third valve hole is communicated with a fourth valve hole; in the heating process of the air conditioning system, the first valve hole is communicated with the third valve hole, the second valve hole is communicated with the fourth valve hole, one end of the defrosting branch circuit is connected with the other end of the outdoor heat exchanger, and the other end of the defrosting branch circuit is connected with the other end of the indoor heat exchanger; the defrosting branch circuit comprises a throttling assembly and a valve body assembly, and the valve body assembly is used for controlling the on-off state of the defrosting branch circuit; and in the defrosting process of the air conditioning system, the valve body assembly starts, the defrosting branch circuit is communicated, and the heat storage assembly is opened to release heat indoors. According to the air conditioning system, the defrosting process of the outdoor heat exchanger at a low-temperature environment is accelerated, the loss of indoor heat in the defrosting process is reduced, and the comfort of a room is improved.

Description

The defrosting control method of air-conditioning system and air-conditioning system
Technical field
The present invention relates to apparatus of air conditioning technical field, especially relate to the defrosting control of a kind of air-conditioning system and air-conditioning systemMethod.
Background technology
The frosting of air-conditioner, defrost process are very complicated processes, affect the formation of frost layer and the factor of thawing is more multipleAssorted, mainly comprise cooling surface, outdoor climate conditions and time. While use in the air conditioner environment that outdoor temperature is very low in the winter time,The evaporating temperature of its working medium is very low, and airborne moisture very easily condenses into frost at evaporator surface, especially on the large ground of air humidityDistrict's frost more easily occurs, frosting can strengthen off-premises station windage, causes heat transfer coefficient of heat exchanger to decline. Along with evaporationThe reduction of temperature, under certain condensation temperature, the coefficient of performance in heating of heat pump is corresponding reduction also, thereby causes the utilization of heat energyRate declines.
For example, when wind-cooling type heat pump air conditioner moves under the very low condition of outdoor environment temperature, outdoor condenser tends to knotFrost, airborne moisture very easily condenses into frost at evaporator surface, especially easier at the large regional frost of air humidityOccur, frosting can strengthen off-premises station windage, causes heat transfer coefficient of heat exchanger to decline, along with the reduction of evaporating temperature,Under certain condensation temperature, the coefficient of performance in heating of heat pump is corresponding reduction also, thereby causes the utilization rate of heat energy to decline.
If can not defrost timely and effectively, the operational efficiency of heat pump air conditioner will reduce greatly. And conventional defrosting at presentMethod is inverse defrosting, i.e. the contrary circulation of air-conditioner operation, and compressor high temperature and high pressure gas out enters outdoor condenser defrost,Cold-producing medium after defrost is got back to second defrost circulation of compressor starts after entering indoor set, and this defrosting method easily causes roomThe loss of heat, affects room comfortableness, and it is high to consume energy.
Summary of the invention
The present invention is intended to solve at least to a certain extent one of technical problem in correlation technique. For this reason, object of the present inventionBe to propose a kind of air-conditioning system, described air-conditioning system has advantages of that energy consumption is low, saving resource.
Another object of the present invention is to propose a kind of defrosting control method of air-conditioning system, the defrost control of described air-conditioning systemMethod processed is applicable to above-mentioned air-conditioning system.
Provide a kind of air-conditioning system according to the embodiment of the present invention aspect, having comprised: compressor, described compressor has hadExhaust outlet and gas returning port; Commutation assembly, described commutation assembly comprises the first valve port, the second valve port, the 3rd valve port and the 4th valveMouthful, described the first valve port is connected with described exhaust outlet, and described the 4th valve port is connected with described gas returning port; Outdoor heat exchanger and chamberInterior heat exchanger, one end of described outdoor heat exchanger is connected with described the second valve port, the other end of described outdoor heat exchanger with described inOne end of indoor heat exchanger is connected, and the other end of described indoor heat exchanger is connected with described the 3rd valve port, when described air-conditioning systemWhen refrigeration or defrost, described the first valve port is communicated with described the second valve port, and described the 3rd valve port is communicated with described the 4th valve port,When described air-conditioning system heats, the first valve port is communicated with described the 3rd valve port, and described the second valve port is communicated with described the 4th valve port;Be positioned at the defrost branch road of outside, one end of described defrost branch road is connected with the other end of described outdoor heat exchanger, described defrostThe other end of branch road is connected with the other end of described indoor heat exchanger, and described defrost branch road comprises orifice union and valve component,One end of described orifice union is connected with the other end of described outdoor heat exchanger, the other end of described orifice union and the described the 3rdValve port is connected, and described valve component is suitable for controlling connection or the disconnection of described defrost branch road; And have open and closing functionHeat accumulation assembly, in the time of described air-conditioning system defrost, described valve component starts, described defrost branch road is communicated with, described heat accumulationAssembly is opened with to indoor release heat.
According to the air-conditioning system of the embodiment of the present invention, by heat accumulation assembly being set and defrost branch road being set in outside, at skyWhen adjusting system defrost, cold-producing medium flows into defrost branch road at least partly, thus, has reduced and in defrost process, has flowed into indoor changingThe amount of the cold-producing medium in hot device, thus the decrease speed of indoor temperature slowed down. Meanwhile, heat accumulation assembly can also be released to indoorThermal discharge, can delay the speed that indoor temperature declines thus effectively, thereby has reduced the loss of indoor heat, has ensuredThe comfortableness in room.
In some embodiments of the invention, described heat accumulation assembly comprises: phase-change heat storage can, is provided with in described phase-change heat storage canMultiple phase-change thermal storage beads; Be suitable for the heat in described phase-change heat storage can be passed to indoor recirculation assembly described circulation groupPart comprises and circulation line and be located at the circulating pump on described circulation line is provided with circulatory mediator in described circulation line, described in followRing pump is suitable for driving described circulatory mediator to flow in described circulation line, and a part for described circulation line is located at described phase transformationIn heat storage can, to carry out heat exchange with described phase-change heat storage can, another part of described circulation line is located near indoor fan groupThe position of part.
According to some embodiments of the present invention, described air-conditioning system also comprises the first control valve and the second control valve, described firstControl valve is located between one end of described indoor heat exchanger and one end of described defrost branch road, described in described the second control valve is located atBetween the other end of the other end of indoor heat exchanger and described defrost branch road, in the time of described air-conditioning system defrost, described the first controlValve processed and described the second control valve are closed, described valve component starts.
According to some embodiments of the present invention, described air-conditioning system also comprises: reservoir, described reservoir comprises import and goes outMouthful, described import is communicated with the other end of described indoor heat exchanger, the other end of described defrost branch road respectively, described outlet andDescribed the 3rd valve port is communicated with; And be located at the heating component in described reservoir, in the time of described air-conditioning system defrost, described in addHot assembly is suitable for the cold-producing medium heating in described reservoir.
In some embodiments of the invention, described heat accumulation assembly comprises heat accumulation branch road, one end of described heat accumulation branch road with described inThe other end of outdoor heat exchanger is connected, and the other end of described storage heat accumulation branch road is connected with described the 3rd valve port, described heat accumulation branch roadBe positioned at least partly described heat accumulation assembly.
In some embodiments of the invention, described air-conditioning system also comprises: heat accumulation branch road, one end of described heat accumulation branch road withThe other end of described outdoor heat exchanger is connected, and the other end of described heat accumulation branch road is connected with described the 3rd valve port, and described heat accumulation props upRoad be positioned at least partly described heat accumulation assembly; With heat accumulation control valve, described heat accumulation control valve is located on described heat accumulation branch roadTo control the break-make of described heat accumulation branch road, in the time of described air-conditioning system defrost, described heat accumulation branch road disconnects.
Alternatively, described heat accumulation control valve is two, and one of them is positioned at one end and the described outdoor heat exchange of described heat accumulation branch roadBetween the other end of device, between another other end at described heat accumulation branch road and described the 3rd valve port.
Provide a kind of defrosting control method of air-conditioning system according to another aspect of the embodiment of the present invention, described air-conditioning systemFor above-mentioned air-conditioning system, described defrosting control method comprises the following steps: S10: judge that whether described air-conditioning system is in defrostPattern; S20: described air-conditioning system is in defrost pattern, defrost branch road is communicated with described in described valve component control, and described firstValve port is communicated with described the second valve port, and described the 3rd valve port is communicated with described the 4th valve port, and described heat accumulation assembly is to indoor releaseHeat.
According to the defrosting control method of the air-conditioning system of the embodiment of the present invention, by heat accumulation assembly being set and arranging in outsideDefrost branch road, in the time of air-conditioning system defrost, cold-producing medium flows into defrost branch road at least partly, thus, has reduced in defrost processIn flow into the amount of the cold-producing medium in indoor heat exchanger, thereby slowed down the decrease speed of indoor temperature. Meanwhile, heat accumulation assemblyCan also be to indoor release heat, can effectively delay thus the speed that indoor temperature declines, thereby reduce indoor heatLoss, ensured the comfortableness in room.
According to some embodiments of the present invention, described defrosting control method is further comprising the steps of: P10: judge that described air-conditioning isWhether system is in refrigeration mode; P20: described air-conditioning system is in the time of refrigeration mode, and defrost is propped up described in described valve component controlRoad disconnects, and described the first valve port is communicated with described the second valve port, and described the 3rd valve port is communicated with described the 4th valve port.
According to some embodiments of the present invention, described defrosting control method is further comprising the steps of: T10: judge that described air-conditioning isWhether system is in heating mode; T20: described air-conditioning system is in heating mode, defrost branch road described in described valve component controlDisconnect, the first valve port is communicated with described the 3rd valve port, and described the second valve port is communicated with described the 4th valve port.
Additional aspect of the present invention and advantage in the following description part provide, and part will become bright from the following descriptionAobvious, or recognize by practice of the present invention.
Brief description of the drawings
Fig. 1 is according to the structural representation of the air-conditioning system of the embodiment of the present invention one;
Fig. 2 is according to the structural representation of the air-conditioning system of the embodiment of the present invention two.
Fig. 3 is according to the flow chart of the refrigeration control method of the air-conditioning system of the embodiment of the present invention one;
Fig. 4 is according to the flow chart of the heat-production control method of the air-conditioning system of the embodiment of the present invention one;
Fig. 5 is according to the flow chart of the defrosting control method of the air-conditioning system of the embodiment of the present invention one;
Fig. 6 is according to the flow chart of the refrigeration control method of the air-conditioning system of the embodiment of the present invention two;
Fig. 7 is according to the flow chart of the heat-production control method of the air-conditioning system of the embodiment of the present invention two;
Fig. 8 is according to the flow chart of the defrosting control method of the air-conditioning system of the embodiment of the present invention two.
Reference numeral:
Air-conditioning system 100,
Compressor 101, exhaust outlet 1011, gas returning port 1012,
Commutation assembly 102, the first valve port 1021, the second valve port 1022, the three valve port 1023, the four valve ports 1024,
Outdoor heat exchanger 103, one end 1031 of outdoor heat exchanger, the other end 1032 of outdoor heat exchanger, outdoor fan assembly
104, indoor heat exchanger 105, one end 1051 of indoor heat exchanger, the other end 1052 of indoor heat exchanger, indoor fanAssembly 106,
Defrost branch road 107, one end 107a of defrost branch road, the other end 107b of defrost branch road,
Orifice union 1071, one end 10711 of orifice union, the other end 10712 of orifice union, valve component 1072,
The first control valve 108, the second control valves 109,
Heat accumulation assembly 110, phase-change heat storage can 1101, phase-change thermal storage bead 11011, recirculation assembly 1102, circulation line 11021,Circulating pump 11022,
Heat accumulation branch road 111, one end 1111 of heat accumulation branch road, the other end 1112 of heat accumulation branch road, heat accumulation control valve 112,
Reservoir 113, import 1131, outlet 1132,
Electric expansion valve 114, temperature sensor 115, heating component 116, gas-liquid separator 117.
Detailed description of the invention
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings. Below by with reference to accompanying drawingThe embodiment describing is exemplary, is intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
Disclosing below provides many different embodiment or example to be used for realizing different structure of the present invention. In order to simplify thisDisclosure of an invention, hereinafter the parts to specific examples and setting are described. Certainly, they are only example, and orderDo not lie in restriction the present invention. In addition, the present invention can be in different examples repeat reference numerals and/or letter. This repetitionTo be in order simplifying and object clearly, itself not indicate the relation between discussed various embodiment and/or setting. In addition,The various specific technique the invention provides and the example of material, but those of ordinary skill in the art can recognize otherThe property of can be applicable to of technique and/or the use of other materials.
Describe in detail according to the air-conditioning system 100 of the embodiment of the present invention below with reference to Fig. 1 and Fig. 2.
As depicted in figs. 1 and 2, according to the air-conditioning system 100 of the embodiment of the present invention, comprise compressor 101, commutation assembly 102,Outdoor heat exchanger 103, indoor heat exchanger 105, defrost branch road 107 and heat accumulation assembly 110.
Particularly, as shown in Figure 1, compressor 101 has exhaust outlet 1011 and gas returning port 1012. Commutation assembly 102Comprise the first valve port 1021, the second valve port 1022, the 3rd valve port 1023 and the 4th valve port 1024, the first valve ports 1021 withExhaust outlet 1011 is connected, and the 4th valve port 1024 is connected with gas returning port 1012, one end 1031 and the second valve of outdoor heat exchangerMouthfuls 1022 are connected, and the other end 1032 of outdoor heat exchanger is connected with one end 1051 of indoor heat exchanger, indoor heat exchanger separatelyOne end 1052 is connected with the 3rd valve port 1023.
When air-conditioning system 100 is freezed or when defrost, the first valve port 1021 is communicated with the second valve port 1022, the 3rd valve port 1023Be communicated with the 4th valve port 1024, in the time that air-conditioning system 100 heats, the first valve port 1021 is communicated with the 3rd valve port 1023, theTwo valve ports 1022 are communicated with the 4th valve port 1024.
As shown in Figure 1, defrost branch road 107 can be positioned at outside, one end 107a of defrost branch road and outdoor heat exchanger anotherOne end 1032 is connected, and the other end 107b of defrost branch road is connected with the other end 1052 of indoor heat exchanger, defrost branch road 107Comprise orifice union 1071 and valve component 1072, one end 10711 of orifice union and the other end 1032 of outdoor heat exchangerBe connected, the other end 10712 of orifice union is connected with the 3rd valve port 1023, and valve component 1072 is suitable for controlling defrost branch road107 connection or disconnection.
Heat accumulation assembly 110 has the function of opening and closing, and in the time of air-conditioning system 100 defrost, valve component 1072 starts,Defrost branch road 107 is communicated with, and heat accumulation assembly 110 is opened with to indoor release heat. Can reduce thus the loss of indoor heat,Improve the comfortableness in room. It should be noted that, the thermal source of heat accumulation assembly 110 is not done to concrete restriction here, for example, storageThe heat that the thermal source of hot assembly 110 produces can heat for air-conditioning system 100 time can be also the heat of heater block generation.
In the time that air-conditioning system 100 is freezed, valve component 1072 is controlled defrost branch road 107 and is disconnected, the first valve port 1021 andTwo valve ports 1022 are communicated with, and the 3rd valve port 1023 is communicated with the 4th valve port 1024, the cold-producing medium of compressor 101 interior HTHPsEnter outdoor heat exchanger 103 from exhaust outlet 1011 discharges of compressor 101 and carry out heat exchange, enter the system of outdoor heat exchanger 103Cryogen condensation heat radiation laggard enter indoor heat exchanger 105, enter after the cold-producing medium evaporation endothermic of indoor heat exchanger 105, through changingGas returning port 1012 to assembly 102 from compressor 101 is got back to the next kind of refrigeration cycle of the interior beginning of compressor 101.
In the time that air-conditioning system 100 heats, valve component 1072 is controlled defrost branch road 107 and is disconnected, the first valve port 1021 andThree valve ports 1023 are communicated with, and the second valve port 1022 is communicated with the 4th valve port 1024, the cold-producing medium of compressor 101 interior HTHPsEnter indoor heat exchanger 105 from exhaust outlet 1011 discharges of compressor 101 and carry out heat exchange, enter the system of indoor heat exchanger 105Cryogen condensation heat radiation laggard enter outdoor heat exchanger 103, enter after the cold-producing medium evaporation endothermic of outdoor heat exchanger 103 by commutationAssembly 102 is got back to the interior beginning next one of compressor 101 from the gas returning port 1012 of compressor 101 and is heated circulation.
In the time of air-conditioning system 100 defrost, valve component 1072 is controlled defrost branch road 107 and is communicated with, the first valve port 1021 andTwo valve ports 1022 are communicated with, and the 3rd valve port 1023 is communicated with the 4th valve port 1024, the cold-producing medium of compressor 101 interior HTHPsEnter outdoor heat exchanger 103 from exhaust outlet 1011 discharges and carry out heat exchange to remove the frost outdoor heat exchanger 103, enter outdoorAfter the cold-producing medium heat exchange of heat exchanger 103 completes at least part of cold-producing medium flow through after defrost branch road 107 by commutation assembly 102 fromThe gas returning port 1012 of compressor 101 is got back to the next circulation of the interior beginning of compressor 101, simultaneously in air-conditioning system 100 defrostsIn process, heat accumulation assembly 110 can not decline to ensure indoor temperature to indoor release heat, improves the comfortableness in room.
According to the air-conditioning system 100 of the embodiment of the present invention, by heat accumulation assembly 110 being set and defrost branch road being set in outside107, in the time of air-conditioning system 100 defrost, cold-producing medium flows into defrost branch road 107 at least partly, thus, has reduced in defrostIn journey, flow into the amount of the cold-producing medium in indoor heat exchanger 105, thereby slowed down the decrease speed of indoor temperature. Meanwhile, storageHot assembly 110 can also be to indoor release heat, can effectively delay thus the speed that indoor temperature declines, thereby reducesThe loss of indoor heat, ensured the comfortableness in room.
In some embodiments of the invention, as shown in Figure 2, heat accumulation assembly 110 comprises phase-change heat storage can 1101 and circulation groupPart 1102, recirculation assembly 1102 is suitable for the heat in phase-change heat storage can 1101 to be passed to indoor, thus in air-conditioning system 100While carrying out defrost, recirculation assembly 1102 can be passed to the heat in phase-change heat storage can 1101 indoor, thereby has increased chamberIn temperature, improved the comfortableness in room. Recirculation assembly 1102 comprises circulation line 11021 and is located at circulation line 11021On circulating pump 11022, in circulation line 11021, be provided with circulatory mediator (such as water, ethylene glycol etc.), circulating pump 11022Be suitable for driving circulatory mediator interior mobile at circulation line 11021, a part for circulation line 11021 is located at phase-change heat storage can 1101Interior to carry out heat exchange with phase-change heat storage can 1101. That is to say, under the driving of circulating pump 11022, circulatory mediator is followingThe interior flow circuit in endless tube road 11021, when circulatory mediator flows to phase-change heat storage can 1101 when interior, circulatory mediator and phase-change thermal storageTank 1101 carries out heat exchange, and circulatory mediator temperature raises, when the higher circulatory mediator of temperature flows out to phase-change heat storage can 1101When outside, circulatory mediator and indoor environment are carried out heat exchange, thereby can, by thermal release to indoor environment, thus canIncrease indoor temperature, improve the comfortableness in room.
Further, as shown in Figure 2, another part of circulation line 11021 is located at the position near indoor fan assembly 106Put place. In phase-change heat storage can 1101, carry out thus the circulatory mediator of heat exchange, under the effect of circulating pump 11022, alongCirculation line 11021 can be delivered to heat the position of adjacent chamber inner blower assembly 106, and by indoor fan assembly 106Can be by heat diffusion to indoor, thus the heat exchange efficiency between circulatory mediator and indoor environment can be improved, and then can carryHigh indoor temperature, the comfortableness in raising room.
Alternatively, as shown in Figure 2, in phase-change heat storage can 1101, be provided with multiple phase-change thermal storage beads 11011. Thus, canImprove the heat exchange efficiency between circulatory mediator and phase-change heat storage can 1101. It should be noted that, phase-change thermal storage bead 11011 canWith storing heat, and in the time that air-conditioning system 100 is carried out defrost, phase-change thermal storage bead 11011 be positioned at phase-change heat storage can 1101Circulatory mediator in interior circulation line 11021 carries out heat exchange, indoor so that heat is passed to, thereby improves indoor temperatureDegree, the comfortableness in raising room. In addition, phase-change thermal storage bead 11011 can adopt paraffin as phase-change heat-storage material.
In some embodiments of the invention, as depicted in figs. 1 and 2, air-conditioning system 100 also comprises the first control valve 108Be located at one end 1051 of indoor heat exchanger and one end 107a of defrost branch road with the second control valve 109, the first control valves 108Between, the second control valve 109 is located between the other end 1052 of indoor heat exchanger and the other end 107b of defrost branch road, whenWhen air-conditioning system 100 defrost, can avoid cold-producing medium to enter in indoor heat exchanger 105, now indoor heat exchanger 105 is rightIndoor environment inner refrigerant stops flowing, thereby can be to indoor released cold quantity, and then can reduce the loss of indoor heat,Ensure the comfortableness in room.
Alternatively, valve component 1072 is by-passing valve. By-passing valve has advantages of to be convenient to install, and by-passing valve is arranged on to defrostOn branch road 107, can effectively simplify the assembling process of by-passing valve, reduce production costs. Orifice union 1071 comprises capillaryPipe and/or choke valve (for example electric expansion valve), that is to say, orifice union 1071 can comprise capillary, also can wrapDraw together choke valve, can also comprise capillary and choke valve simultaneously. Capillary and choke valve all have joint in air-conditioning system 100The effect of stream step-down, can select suitable orifice union 1071 as required. Commutation assembly 102 is cross valve, cross valveSimple in structure, cost is low and application is wide.
In some embodiments of the invention, as shown in Figure 1, air-conditioning system 100 can also comprise reservoir 113 and heatingAssembly 116, reservoir 113 comprises import 1131 and outlet 1132, import 1131 respectively with the other end of indoor heat exchanger1052, the other end 107b of defrost branch road is communicated with, and outlet 1132 is communicated with the 3rd valve port 1023, and heating component 116 is located atIn reservoir 113, in the time of air-conditioning system 100 defrost, heating component 116 is suitable for the cold-producing medium heating in reservoir 113.
It should be noted that, reservoir 113 has the effect of storage, gas-liquid separation, filtration, noise reduction and cold-producing medium buffering,In air-conditioning system 100 running, cannot ensure that cold-producing medium can all vaporize completely, namely from indoor heat exchanger 105 with changeThe cold-producing medium that frost branch road 107 flows out has liquid cold-producing medium and enters in reservoir 113, owing to there is no the liquid refrigerating of vaporizationAgent is because itself is than gas weight, and at the bottom of can directly falling into 113 of reservoirs, the cold-producing medium of vaporization is by the outlet 1132 of reservoir 113Enter in compressor 101, thereby prevented that compressor 101 inhalant liquid cryogens from causing liquid hammer.
Meanwhile, at the interior heating component 116 that arranges of reservoir 113, in the time of air-conditioning system 100 defrost, heating component 116 is suitable forTo the cold-producing medium heating in reservoir 113, the cold-producing medium after intensification enters the next defrost process of the interior beginning of compressor 101,Can accelerate the defrost process of outdoor heat exchanger 103 under low temperature environment, shorten the needed time of defrost, ensure relaxing of roomAdaptive. Air-conditioning system 100 adopts the method that increases defrost branch road 107, and heats in conjunction with heating component 116, can accelerateThe defrost process of outdoor heat exchanger 103 under low temperature environment, shortens defrost required time, thereby extends the time that heats, and ensures roomBetween comfortableness, improve the heating efficiency of air-conditioning system 100, avoided indoor thermal losses that traditional contrary circulation defrost bringsProblem, thus optimize the low-temperature heating efficiency of air-conditioning system 100, accelerate the defrost speed of air-conditioning system 100, and thenMake air-conditioning system 100 can adapt to the stable operation of heating mode under low temperature environment.
Alternatively, as shown in Figure 1, heating component 116 comprises PTC heating plate, and PTC heating plate can heat reservoir 113Interior cold-producing medium, and its temperature is raise, cold-producing medium becomes compressor 101 return-airs of higher temperature, thereby accelerates low temperature ringThe defrost process of outdoor heat exchanger 103 under border, shortens the needed time of defrost, has reduced the loss of indoor heat, ensuresThe comfortableness in room.
In some embodiments of the invention, air-conditioning system 110 comprises heat accumulation branch road 111, one end of heat accumulation branch road 1111 withThe other end 1052 of indoor heat exchanger is connected, and the other end 1112 of heat accumulation branch road is connected with the 3rd valve port 1023, heat accumulation branch road111 be positioned at least partly heat accumulation assembly 110 (scheming not shown this example). That is to say, heat accumulation branch road 111 is connected onIndoor heat exchanger 105 is with between the 3rd valve port 1023, heat accumulation branch road 111 be positioned at least partly heat accumulation assembly 110.
In the time that air-conditioning system 100 heats, the first valve port 1021 is communicated with the 3rd valve port 1023, compressor 101 exhausts thusThe cold-producing medium of the HTHPs that mouth 1011 is discharged flows to the first valve port 1021 through exhaust outlet 1011, and from the 3rd valve port 1023Flow out, first flow in heat accumulation branch road 111, when now the interior storage air-conditioning system 100 of heat accumulation assembly 110 heats, cold-producing medium dischargesThe heat going out. Cold-producing medium, after heat accumulation branch road 111, flows to indoor heat exchanger 105 and carries out heat exchange with to indoor heating,Indoor heat exchanger 105 carries out the refrigerant flow direction outdoor heat exchanger 103 that heat exchange completes, and cold-producing medium is in outdoor heat exchanger 103After completing heat exchange, flow back to again in compressor 101, start next circulation.
In other embodiment of the present invention, as shown in Figure 2, air-conditioning system 100 comprises heat accumulation branch road 111 and heat accumulation controlValve 112 processed. One end 1111 of heat accumulation branch road is connected with the other end 1032 of outdoor heat exchanger, the other end 1112 of heat accumulation branch roadBe connected with the 3rd valve port 1023, heat accumulation branch road 111 be positioned at least partly heat accumulation assembly 110.
In the time that air-conditioning system 100 heats, the first valve port 1021 is communicated with the 3rd valve port 1023, compressor 101 exhaust outlets 1011The cold-producing medium of the HTHP of discharging flows to the first valve port 1021 through exhaust outlet 1011, and flows out from the 3rd valve port 1023.The cold-producing medium flowing out from the 3rd valve port 1023, a part flows to indoor heat exchanger 105 and carries out heat exchange with to indoor heating, anotherPart flows to heat accumulation branch road 111, and heat accumulation assembly 110 changes with the part heat accumulation branch road 111 that is positioned at heat accumulation assembly 110Heat is with storing heat. The cold-producing medium flowing out from indoor heat exchanger 105, the cold-producing medium flowing out from heat accumulation branch road 111 flow to jointlyOutdoor heat exchanger 103, and flow back to again in compressor 101 complete heat exchange in outdoor heat exchanger 103 after, start the next one and followRing.
As shown in Figure 2, heat accumulation control valve 112 is located on heat accumulation branch road 111 break-make to control heat accumulation branch road 111, works as skyWhen adjusting system 100 defrost, heat accumulation branch road 111 disconnects. Can prevent from thus carrying out at outdoor heat exchanger 103 that heat exchange completesCold-producing medium enters in heat accumulation branch road 111, and exchanges with the heat of heat accumulation assembly 110 interior storages, can reduce heat accumulation groupHeat in part 110 runs off, thereby can be in the time of air-conditioning system 100 defrost, heat accumulation assembly 110 to indoor release heat withImprove indoor temperature, and improve the comfortableness in room.
Preferably, as shown in Figure 2, heat accumulation control valve 112 is two, one of them one end 1111 that is positioned at heat accumulation branch road withBetween the other end 1032 of outdoor heat exchanger, between another other end 1112 at heat accumulation branch road and the 3rd valve port 1023.That is to say, on heat accumulation branch road 111, be provided with 112, two heat accumulation control valves 112 of two heat accumulation control valves and be separately positioned onBe positioned at the two ends of the heat accumulation branch road 111 of heat accumulation assembly 110. When air-conditioning system 100 heats, and when in heat accumulation assembly 110When the heat of storage reaches preset value, can close two heat accumulation control valves 112, can make thus in compressor 101The cold-producing medium of the HTHP flowing out all enters indoor heat exchanger 105 and carries out heat exchange, and from indoor heat exchanger 105 flows outAll enter outdoor heat exchanger 103 and carry out heat exchange, thereby improve heat exchange efficiency, improve fast indoor temperature, improve roomBetween comfortableness, and can reduce the loss of heat accumulation assembly 110 interior heats. When air-conditioning system 100 is freezed or when defrost,Can close two heat accumulation control valves 112, can prevent from thus carrying out from outdoor heat exchanger 103 low-temp low-pressure that heat exchange completesCold-producing medium enter heat accumulation branch road 111 and carry out heat exchange with heat accumulation assembly 110, or complete heat exchange from indoor heat exchanger 105Cold-producing medium enters heat accumulation branch road 111 and carries out heat exchange with heat accumulation assembly 110, thereby has reduced heat in heat accumulation assembly 110Loss, has ensured that heat accumulation assembly 110, for the indoor heat providing, has ensured indoor temperature, improves the comfortableness in room.
As Figure 1-Figure 8, according to the defrosting control method of the air-conditioning system 100 of the embodiment of the present invention, air-conditioning system 100For above-mentioned air-conditioning system 100, defrosting control method comprises the following steps:
S10: judge that whether air-conditioning system 100 is in defrost pattern;
S20: air-conditioning system 100 is in defrost pattern, and valve component 1072 is controlled defrost branch road 107 and is communicated with, the first valve port1021 are communicated with the second valve port 1022, and the 3rd valve port 1023 is communicated with the 4th valve port 1024, and heat accumulation assembly 110 is to indoorRelease heat.
Now, the cold-producing medium of compressor 101 interior HTHPs is introduced into outdoor heat exchanger 103, in outdoor heat exchanger 103, changesThe cold-producing medium part that heat completes enters indoor heat exchanger 105, and a part flows into defrost branch road 107, at indoor heat exchanger 105The cold-producing medium that heat exchange completes flows back to compressor 101 converging with the cold-producing medium flowing out from defrost branch road 107, starts the next one and followsRing. Meanwhile, the cold-producing medium completing in the interior heat exchange of outdoor heat exchanger 103 flows into the indoor heat of indoor heat exchanger 105 meeting increaseLoss, and in the process of defrost, heat accumulation assembly 110 can reduce the loss of indoor heat to indoor release heat, improves roomBetween comfortableness.
According to the defrosting control method of the air-conditioning system 100 of the embodiment of the present invention, by heat accumulation assembly 110 being set and in chamberArranged outside defrost branch road 107, in the time of air-conditioning system 100 defrost, cold-producing medium flows into defrost branch road 107 at least partly, thus,Reduce the amount that flows into the cold-producing medium in indoor heat exchanger 105 in defrost process, thereby slowed down the decline of indoor temperatureSpeed. Meanwhile, heat accumulation assembly 110 can also be to indoor release heat, can effectively delay thus indoor temperature declineSpeed, thus the loss of indoor heat reduced, ensure the comfortableness in room.
In some embodiments of the invention, defrosting control method is further comprising the steps of:
P10: judge that whether air-conditioning system 100 is in refrigeration mode;
P20: air-conditioning system 100 is in refrigeration mode, and valve component 1072 is controlled defrost branch road 107 and disconnected, the first valve port1021 are communicated with the second valve port 1022, and the 3rd valve port 1023 is communicated with the 4th valve port 1024.
Now, the cold-producing medium of compressor 101 interior HTHPs is introduced into outdoor heat exchanger 103, in outdoor heat exchanger 103, changesThe cold-producing medium that heat completes enters indoor heat exchanger 105, and the cold-producing medium completing in indoor heat exchanger 105 heat exchange flows back to compressor 101,Start next kind of refrigeration cycle.
In some embodiments of the invention, defrosting control method is further comprising the steps of:
T10: judge that whether air-conditioning system 100 is in heating mode;
T20: air-conditioning system 100 is in heating mode, and valve component 1072 is controlled defrost branch road 107 and disconnected, the first valve port1021 are communicated with the 3rd valve port 1023, and the second valve port 1022 is communicated with the 4th valve port 1024.
Now, the cold-producing medium of compressor 101 interior HTHPs is introduced into indoor heat exchanger 105, in indoor heat exchanger 105, changesThe cold-producing medium that heat completes enters outdoor heat exchanger 103, and the cold-producing medium completing in outdoor heat exchanger 103 heat exchange flows back to compressor 101,Start the next one and heat circulation.
For example, air-conditioning system 100 also comprises that the first control valve 108 and the second control valve 109, the first control valves 108 are located at chamberBetween one end 1051 of interior heat exchanger and one end 107a of defrost branch road, the second control valve 109 is located at the another of indoor heat exchangerBetween the other end 107b of one end 1052 and defrost branch road, in the time of air-conditioning system 100 defrost, the first control valve 108 andTwo control valves 109 are closed, valve component 1072 starts. Now, cold-producing medium cannot pass through indoor heat exchanger 105, works as air-conditioningWhen system 100 defrost, be introduced into outdoor heat exchanger 103 from the cold-producing medium of the HTHP of compressor 101 interior discharges and changeFrost, the cold-producing medium that defrost completes all flows into defrost branch road 107, and heats through the heating component 116 in reservoir 113After flow back in compressor 101, start next defrost process. Thus, can avoid completing from outdoor heat exchanger 103 heat exchangeCold-producing medium flow into indoor heat exchanger 105 carry out heat exchange, can avoid cold-producing medium at the interior released cold quantity of indoor heat exchanger 105,Thereby reduce further the loss of indoor heat, improved the comfortableness in room.
Below with reference to Fig. 1-Fig. 8, the air-conditioning system 100 of two specific embodiments according to the present invention and air-conditioning system 100 are describedDefrosting control method, following description is exemplary, is intended to for explaining the present invention, and can not be interpreted as of the present inventionRestriction.
Embodiment mono-
As shown in Figure 1, comprise that according to the air-conditioning system 100 of the embodiment of the present invention compressor 101 (can be for example that vortex is pressedContracting machine), commutation assembly 102, defrost branch road 107, (fin of outdoor heat exchanger can adopt low pressure to outdoor heat exchanger 103Damage fin), outdoor fan assembly 104 (for example high-static pressure fan), indoor heat exchanger 105, indoor fan assembly 106, theOne control valve 108, the second control valve 109, throttling arrangement, gas-liquid separator 117, reservoir 113 and heating component 116.
Particularly, compressor 101 has exhaust outlet 1011 and gas returning port 1012, commutation assembly 102 (for example cross valve) bagDraw together the first valve port 1021, the second valve port 1022, the 3rd valve port 1023 and the 4th valve port 1024, the first valve ports 1021 and pressThe exhaust outlet 1011 of contracting machine 101 is connected, and the 4th valve port 1024 is connected with the gas returning port 1012 of compressor 101, and in compressionBetween the gas returning port 1012 of machine 101 and the 4th valve port 1024, be provided with gas-liquid separator 117, can prevent thus cold-producing mediumIn there is liquid refrigerant and liquid hit phenomenon occur.
One end 1031 of outdoor heat exchanger is connected with the second valve port 1022, the other end 1032 and the indoor heat exchange of outdoor heat exchangerOne end 1051 of device is connected, and the other end 1052 of indoor heat exchanger is connected with the 3rd valve port 1023. Defrost branch road 107 comprisesOne end 107a of orifice union 1071 (for example capillary) and valve component 1072 and defrost branch road and outdoor heat exchanger anotherOne end 1032 is connected, and the other end 107b of defrost branch road is connected with the other end 1052 of indoor heat exchanger, one of orifice unionEnd 10711 is connected with the other end 1032 of outdoor heat exchanger, the other end 10712 of orifice union and the 3rd valve port 1023 phasesConnect, valve component 1072 is arranged on one end 10711 of orifice union on defrost branch road 107. Orifice union 1071 is capillaryPipe, valve component 1072 is by-passing valve.
Throttling arrangement is arranged on one of the other end 1032 of outdoor heat exchanger and one end 107a of defrost branch road and indoor heat exchangerEnd 1051, throttling arrangement is electric expansion valve 114. The first control valve 108 is located at one end 1051 and the defrost of indoor heat exchangerBetween one end 107a of branch road. The second control valve 109 is arranged on the another of the other end 1052 of indoor heat exchanger and defrost branch roadBetween the 107b of one end.
Reservoir 113 comprises import 1131 and outlet 1132, import 1131 respectively with the other end 1052 of indoor heat exchangerBe communicated with the other end 107b of defrost branch road, outlet 1132 is communicated with the 3rd valve port 1023. Heating component 116 is located at liquid storageIn device 113, heating component 116 can heat the cold-producing medium in reservoir 113. When air-conditioning system 100 is changedWhen frost, heating component 116 can be opened, and heating component 116 can be PTC heating plate.
As shown in figures 1 and 3, in the time that air-conditioning system 100 is freezed, valve component 1072 is controlled defrost branch road 107 and is disconnected,The first control valve 108 and the second control valve 109 are opened, and the first valve port 1021 and the second valve port 1022 are communicated with, the 3rd valve port1023 and the 4th valve port 1024 be communicated with, the cold-producing medium of compressor 101 interior HTHPs is introduced into outdoor heat exchanger 103 heat exchange,The cold-producing medium completing in outdoor heat exchanger 103 heat exchange, after electric expansion valve 114 reducing pressure by regulating flows, enters indoor heat exchanger 105Carry out heat exchange, the cold-producing medium completing in indoor heat exchanger 105 heat exchange enters in reservoir 113, and going out from reservoir 113After mouth 1132 flows out, flow back in compressor 101, start next kind of refrigeration cycle.
As shown in Figure 1 and Figure 4, in the time that air-conditioning system 100 heats, valve component 1072 is controlled defrost branch road 107 and is disconnected,The first control valve 108 and the second control valve 109 are opened, and the first valve port 1021 and the 3rd valve port 1023 are communicated with, the second valve port1022 and the 4th valve port 1024 be communicated with, the cold-producing medium of compressor 101 interior HTHPs is introduced into indoor heat exchanger 105 to carry outHeat exchange, the cold-producing medium that completes heat exchange at indoor heat exchanger 105 through electric expansion valve 114 reducing pressure by regulating flows laggard enter outdoor heat exchangeDevice 103, the cold-producing medium that completes heat exchange at outdoor heat exchanger 103 flows back to the interior beginning next one of compressor 101 and heats circulation.
As shown in Figure 1 and Figure 5, in the time of air-conditioning system 100 defrost, valve component 1072 is controlled defrost branch road 107 and is communicated with,The first control valve 108 and the second control valve 109 are closed, and the first valve port 1021 and the second valve port 1022 are communicated with, the 3rd valve port1023 and the 4th valve port 1024 be communicated with, the cold-producing medium of compressor 101 interior HTHPs is introduced into outdoor heat exchanger 103 to carry outHeat exchange, to remove the frost on outdoor heat exchanger 103, completes the cold-producing medium of heat exchange through electronic expansion at outdoor heat exchanger 103After valve 114 reducing pressure by regulating flows, flow into defrost branch road 107, and on defrost branch road 107 by entering storage after capillary-compensated step-downIn liquid device 113, the PTC heating plate in reservoir 113 heats the cold-producing medium in reservoir 113, the system after heatingRefrigerant flow is returned in compressor 101, starts next defrost circulation.
According to the defrosting control method of the air-conditioning system 100 of the embodiment of the present invention, by defrost branch road 107 is set in outside,In the time of air-conditioning system 100 defrost, can make at least part of cold-producing medium flowing out from outdoor heat exchanger 103 in the throttling group of flowing throughAfter part 1071, turn back in compressor 101, can reduce thus the amount that flow into indoor heat exchanger 105 inner refrigerants, therebyReduce the loss of indoor heat, ensured the comfortableness in room.
Embodiment bis-
As shown in Figure 2, different from embodiment mono-, in this embodiment, air-conditioning system 100 also comprise heat accumulation assembly 110,Heat accumulation branch road 111 and heat accumulation control valve 112. Wherein heat accumulation assembly 110 comprises phase-change heat storage can 1101 and recirculation assembly 1102,Recirculation assembly 1102 can be passed to the heat in phase-change heat storage can 1101 indoor, and recirculation assembly 1102 comprises circulation line11021 and be located at the circulating pump 11022 on circulation line 11021, in circulation line 11021, be provided with circulatory mediator, circulating pump11022 drive circulatory mediator interior mobile at circulation line 11021, and a part for circulation line 11021 is located at phase-change heat storage canIn 1101, a part is located at the position near indoor fan assembly 106, under the effect of circulating pump 11022, follows thusMedium circulation in endless tube road 11021 flows so that the heat in phase-change heat storage can 1101 is passed to indoor. Phase-change heat storage canIn 1101, be provided with multiple phase-change thermal storage beads 11011, in order to store heat, on phase-change heat storage can 1101, be also provided with temperature and passSensor 115 is in order to detect the temperature in phase-change heat storage can 1101.
One end 1111 of heat accumulation branch road is connected with the other end 1032 of outdoor heat exchanger, the other end 1112 of heat accumulation branch road andThree valve ports 1023 are connected, heat accumulation branch road 111 be positioned at least partly heat accumulation assembly 110, thus can be in air-conditioning system100 while heating to the interior store heat of heat accumulation assembly 110, and in the time of air-conditioning system 100 defrost for to indoor release heat.Heat accumulation control valve 112 is two and is located on heat accumulation branch road 111, and one of them is located at one end 1111 of heat accumulation branch road with outdoorBetween the other end 1032 of heat exchanger, another is located between the other end 1112 and the 3rd valve port 1023 of heat accumulation branch road, usesIn the break-make of controlling heat accumulation branch road 111.
As shown in Figure 2 and Figure 6, in the time that air-conditioning system 100 is freezed, valve component 1072 is controlled defrost branch road 107 and is disconnected,Heat accumulation control valve 112 disconnects, and the first control valve 108 and the second control valve 109 are opened, the first valve port 1021 and the second valve port1022 are connected, and the 3rd valve port 1023 is connected with the 4th valve port 1024. The cold-producing medium advanced person of the HTHP in compressor 101Enter outdoor heat exchanger 103 and carry out heat exchange, the cold-producing medium completing in outdoor heat exchanger 103 heat exchange saves through electric expansion valve 114Stream step-down laggard enter indoor heat exchanger 105 carry out heat exchange, the cold-producing medium completing in indoor heat exchanger 105 heat exchange flows back to compressorThe next kind of refrigeration cycle of 101 interior beginning.
As shown in Figure 2 and Figure 7, in the time that air-conditioning system 100 heats, valve component 1072 is controlled defrost branch road 107 and is disconnected,Heat accumulation control valve 112 is opened, and the first control valve 108 and the second control valve 109 are opened, the first valve port 1021 and the 3rd valve port1023 are communicated with, and the second valve port 1022 is communicated with the 4th valve port 1024. A cold-producing medium part for compressor 101 interior HTHPsEnter indoor heat exchanger 105 and carry out heat exchange, a part flows into heat accumulation branch road 111, and by being located in phase-change heat storage can 1101Part heat accumulation branch road 111 carry out heat exchange with the heat accumulation bead in phase-change heat storage can 1101, when temperature sensor 115 detectsWhen the heat of the storage in phase-change heat storage can 1101 reaches preset value, heat accumulation control valve 112 disconnects. At indoor heat exchanger 105With cold-producing medium that on heat accumulation branch road 111, heat exchange completes through electric expansion valve 114 reducing pressure by regulating flows laggard enter outdoor heat exchanger 103Carry out heat exchange, the cold-producing medium completing in outdoor heat exchanger 103 heat exchange flows back to the interior beginning next one of compressor 101 and heats circulation.In the time detecting that outdoor heat exchanger 103 need to carry out defrost and processes, the air-conditioning system 100 defrost pattern that brings into operation.
As shown in Figure 2 and Figure 8, in the time of air-conditioning system 100 defrost, valve component 1072 is controlled defrost branch road 107 and is communicated with,Heat accumulation control valve 112 disconnects, and the first control valve 108 and the second control valve 109 are closed, the first valve port 1021 and the second valve port1022 are communicated with, and the 3rd valve port 1023 is communicated with the 4th valve port 1024, and the cold-producing medium of compressor 101 interior HTHPs is introduced intoOutdoor heat exchanger 103 is interior to remove the frost on outdoor heat exchanger 103, the cold-producing medium completing in the interior heat exchange of outdoor heat exchanger 103After electric expansion valve 114 reducing pressure by regulating flows, flow into defrost branch road 107, at defrost branch road 107 through capillary furtherAfter reducing pressure by regulating flow, enter in reservoir 113, after the heating of the interior PTC heating plate of reservoir 113, flow back in compressor 101,Start next defrost circulation. In the process of air-conditioning system 100 defrosts, circulating pump 11022 is opened, circulating pump 11022 simultaneouslyDrive the circulatory mediator in circulation line 11021 to flow, circulatory mediator in mobile process by phase-change heat storage can 1101Heat is passed to indoor, thereby ensures that air-conditioning system 100 reduces the loss of indoor heat in the process of defrost, thereby improvesThe comfortableness in room.
According to the defrosting control method of the air-conditioning system 100 of the embodiment of the present invention, by heat accumulation assembly 110 being set and in chamberArranged outside defrost branch road 107, in the time of air-conditioning system 100 defrost, cold-producing medium flows into defrost branch road 107 at least partly, thus,Reduce the amount that flows into the cold-producing medium in indoor heat exchanger 105 in defrost process, thereby slowed down the decline of indoor temperatureSpeed. Meanwhile, heat accumulation assembly 110 can also be to indoor release heat, can effectively delay thus indoor temperature declineSpeed, thus the loss of indoor heat reduced, ensure the comfortableness in room.
In description of the invention, it will be appreciated that, term " on ", the orientation of the instruction such as D score, " interior ", " outward " orPosition relationship is based on orientation shown in the drawings or position relationship, is only the present invention for convenience of description and simplified characterization, and notBe instruction or the hint device of indication or element must there is specific orientation, with specific orientation structure and operation, therefore notCan be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as instruction or hint relative importanceOr the implicit quantity that indicates indicated technical characterictic. Thus, the feature that is limited with " first ", " second " can be expressedOr impliedly comprise at least one this feature. In description of the invention, the implication of " multiple " is at least two, for example twoIndividual, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixing "Should be interpreted broadly Deng term, for example, can be to be fixedly connected with, and can be also to removably connect, or integral; Can beMechanical connection can be also electrical connection or each other can communication; Can be to be directly connected, also can pass through the indirect phase of intermediaryConnecting, can be the connection of two element internals or the interaction relationship of two elements, unless separately there is clear and definite restriction. ForThose of ordinary skill in the art, can understand above-mentioned term concrete meaning in the present invention as the case may be.
In the present invention, unless otherwise clearly defined and limited, First Characteristic Second Characteristic " on " or D score canBe that the first and second features directly contact, or the first and second features are by intermediary mediate contact. And, First CharacteristicSecond Characteristic " on ", " top " and " above " but First Characteristic directly over Second Characteristic or oblique upper, or onlyOnly represent that First Characteristic level height is higher than Second Characteristic. First Characteristic Second Characteristic " under ", " below " and " below "Can be First Characteristic under Second Characteristic or tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
In the description of this description, reference term " embodiment ", " some embodiment ", " example ", " concrete example ",Or the description of " some examples " etc. means specific features, structure, material or the feature described in conjunction with this embodiment or exampleBe contained at least one embodiment of the present invention or example. In this manual, needn't to the schematic statement of above-mentioned termMust for be identical embodiment or example. And specific features, structure, material or the feature of description can be in officeIn one or more embodiment or example with suitable mode combination. In addition, not conflicting in the situation that, this areaTechnical staff can tie the feature of the different embodiment that describe in this description or example and different embodiment or exampleClose and combine.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary,Can not be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-described embodimentChange, amendment, replacement and modification.

Claims (10)

1. an air-conditioning system, is characterized in that, comprising:
Compressor, described compressor has exhaust outlet and gas returning port;
Commutation assembly, described commutation assembly comprises the first valve port, the second valve port, the 3rd valve port and the 4th valve port, described firstValve port is connected with described exhaust outlet, and described the 4th valve port is connected with described gas returning port;
Outdoor heat exchanger and indoor heat exchanger, one end of described outdoor heat exchanger is connected with described the second valve port, described outdoor changingThe other end of hot device is connected with one end of described indoor heat exchanger, the other end of described indoor heat exchanger and described the 3rd valve port phaseConnect, in the time of described air-conditioning system refrigeration or defrost, described the first valve port is communicated with described the second valve port, described the 3rd valve port andDescribed the 4th valve port is communicated with, and when described air-conditioning system heats, the first valve port is communicated with described the 3rd valve port, described the second valve portBe communicated with described the 4th valve port;
Be positioned at the defrost branch road of outside, one end of described defrost branch road is connected with the other end of described outdoor heat exchanger, described inThe other end of defrost branch road is connected with the other end of described indoor heat exchanger, and described defrost branch road comprises orifice union and valve body groupPart, one end of described orifice union is connected with the other end of described outdoor heat exchanger, the other end of described orifice union with described inThe 3rd valve port is connected, and described valve component is suitable for controlling connection or the disconnection of described defrost branch road; And
Have the heat accumulation assembly of unlatching and closing function, in the time of described air-conditioning system defrost, described valve component starts, described inDefrost branch road is communicated with, and described heat accumulation assembly is opened with to indoor release heat.
2. air-conditioning system according to claim 1, is characterized in that, described heat accumulation assembly comprises:
Phase-change heat storage can, is provided with multiple phase-change thermal storage beads in described phase-change heat storage can;
Be suitable for the heat in described phase-change heat storage can be passed to indoor recirculation assembly, described recirculation assembly comprises circulation lineWith the circulating pump being located on described circulation line, in described circulation line, be provided with circulatory mediator, described circulating pump is suitable for driving instituteState circulatory mediator and flow in described circulation line, a part for described circulation line be located in described phase-change heat storage can with instituteState phase-change heat storage can and carry out heat exchange, another part of described circulation line is located at the position near indoor fan assembly.
3. air-conditioning system according to claim 1, is characterized in that, also comprises the first control valve and the second control valve,Described the first control valve is located between one end of described indoor heat exchanger and one end of described defrost branch road, described the second control valveBe located between the other end of described indoor heat exchanger and the other end of described defrost branch road, in the time of described air-conditioning system defrost, instituteState that the first control valve and described the second control valve are closed, described valve component starts.
4. air-conditioning system according to claim 1, is characterized in that, also comprises:
Reservoir, described reservoir comprises import and outlet, described import respectively with the other end, the institute of described indoor heat exchangerThe other end of stating defrost branch road is communicated with, and described outlet is communicated with described the 3rd valve port; And
Be located at the heating component in described reservoir, in the time of described air-conditioning system defrost, described heating component is suitable for described storageCold-producing medium heating in liquid device.
5. according to the air-conditioning system described in any one in claim 1-4, it is characterized in that, described air-conditioning system comprises heat accumulationBranch road, one end of described heat accumulation branch road is connected with the other end of described indoor heat exchanger, the other end of described storage heat accumulation branch road withDescribed the 3rd valve port is connected, described heat accumulation branch road be positioned at least partly described heat accumulation assembly.
6. according to the air-conditioning system described in any one in claim 1-4, it is characterized in that, comprising:
Heat accumulation branch road, one end of described heat accumulation branch road is connected with the other end of described outdoor heat exchanger, described heat accumulation branch road anotherOne end is connected with described the 3rd valve port, described heat accumulation branch road be positioned at least partly described heat accumulation assembly; With
Heat accumulation control valve, described heat accumulation control valve is located on described heat accumulation branch road to control the break-make of described heat accumulation branch road, works as instituteWhile stating air-conditioning system defrost, described heat accumulation branch road disconnects.
7. air-conditioning system according to claim 6, is characterized in that, described heat accumulation control valve is two, one of themBetween one end of described heat accumulation branch road and the other end of described outdoor heat exchanger, another is positioned at the another of described heat accumulation branch roadBetween one end and described the 3rd valve port.
8. a defrosting control method for air-conditioning system, is characterized in that, described air-conditioning system is according in claim 1-7Air-conditioning system described in any one, described defrosting control method comprises the following steps:
S10: judge that whether described air-conditioning system is in defrost pattern;
S20: described air-conditioning system is in defrost pattern, defrost branch road is communicated with described in described valve component control, described the first valveMouth is communicated with described the second valve port, and described the 3rd valve port is communicated with described the 4th valve port, and described heat accumulation assembly is to indoor releasing heatAmount.
9. the defrosting control method of air-conditioning system according to claim 8, is characterized in that, described defrosting control methodFurther comprising the steps of:
P10: judge that whether described air-conditioning system is in refrigeration mode;
P20: described air-conditioning system is in the time of refrigeration mode, and defrost branch road disconnects described in described valve component control, described firstValve port is communicated with described the second valve port, and described the 3rd valve port is communicated with described the 4th valve port.
10. the defrosting control method of air-conditioning system according to claim 8, is characterized in that, described defrosting control sideMethod is further comprising the steps of:
T10: judge that whether described air-conditioning system is in heating mode;
T20: described air-conditioning system is in heating mode, defrost branch road disconnects described in described valve component control, described the first valveMouth is communicated with described the 3rd valve port, and described the second valve port is communicated with described the 4th valve port.
CN201610074236.9A 2016-02-02 2016-02-02 Air conditioning system and defrosting control method thereof Pending CN105605841A (en)

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Application publication date: 20160525