CN105588222A - Outdoor unit, multi-connected heat pump system and control method thereof - Google Patents
Outdoor unit, multi-connected heat pump system and control method thereof Download PDFInfo
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- CN105588222A CN105588222A CN201510334238.2A CN201510334238A CN105588222A CN 105588222 A CN105588222 A CN 105588222A CN 201510334238 A CN201510334238 A CN 201510334238A CN 105588222 A CN105588222 A CN 105588222A
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- premises station
- branch road
- outdoor heat
- refrigerant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
An embodiment of the invention provides an outdoor unit, a multi-connected heat pump system and a control method thereof, and relates to the field of air conditioners. Heating capacity of the multi-connected heat pump system can be improved in a defrosting process, and room temperature can be increased rapidly after defrosting, so that comfort of a user is improved. The outdoor unit comprises a compressing module, an outdoor heat exchange module, a first branch and a second branch; under the condition that the outdoor unit is in a defrosting mode, the second branch is used for delivering refrigerant flowing out from a liquid side stop valve to the compressing module; the first branch is used for delivering the refrigerant compressed by the compressing module to an outdoor heat exchange module so that defrosting is finished; and a second port of the compressing module is connected with an air side stop valve, is used for delivering the compressed refrigerant to the air side stop valve, and further delivers the refrigerant to an indoor unit so as to maintain indoor temperature. Manufacturing and control of the multi-connected heat pump system are implemented in the invention.
Description
Technical field
The present invention relates to field of air conditioning, relate in particular to a kind of off-premises station, multiple heat pump and control thereofMethod processed.
Background technology
Multiple heat pump is by utilizing the energy of the heat energy reduction air-conditioning system self in natural environmentConsumption, is used widely and develops in green energy resource technical field with the advantage of its low energy consumption.
Multiple heat pump comprises off-premises station and indoor set, and under heating mode, off-premises station is by itOutdoor heat exchanger absorbs heat energy from outdoor environment, and heat energy is transported to indoor. Off-premises station outdoorHeat exchanger, absorbing in heat energy process, can produce frost, affects the heating effect of air-conditioning system,Therefore to defrost to the outdoor heat exchanger of off-premises station.
Existing reverse cycle defrosting technology, by carrying heat by the mode of high temperature refrigerant adverse current to off-premises stationAmount, the outdoor heat exchanger of off-premises station absorbs heat defrost. By in the process of reverse cycle defrosting, chamberThe temperature of transmitting the tracheae of refrigerant between interior machine temperature and indoor and outdoor machine all can reduce, and causes multipleThe heating capacity of heat pump reduces, and even causes indoor temperature to decline, and affects user's comfortableness. EnterOne step ground, while being again operated in heating mode, needs again after the defrosting of multiple heat pump finishesHeating indoor set and tracheae, after causing defrosting, indoor machine during heating leaving air temp hoisting velocity is slow againSlowly equally user's comfortableness is impacted.
Summary of the invention
Embodiments of the invention provide a kind of off-premises station, multiple heat pump and control method thereof, energyEnough improve the heating capacity of multiple heat pump in defrost process, and promote rapidly afterwards chamber in defrostingTemperature, thus user's comfortableness improved.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, provides a kind of off-premises station, comprising: compression module, outdoor heat exchange module,One branch road and the second branch road;
At described off-premises station in defrosting mode in the situation that,
The first port of described the second branch road is connected with the first port of described compression module, and described secondThe second port of branch road is connected with liquid side stop valve, and described the second branch road will be for ending from described liquid sideThe refrigerant that valve flows out is delivered to described compression module;
The first port of described the first branch road is connected with the second port of described compression module, and described firstThe second port of branch road is connected with the second port of described outdoor heat exchange module, and described the first branch road is usedIn the refrigerant after described compression module compression is delivered to described outdoor heat exchange module;
The first port of described outdoor heat exchange module connects the first port of described compression module, forThe refrigerant flowing out from described outdoor heat exchange module is delivered to described compression module;
The second port of described compression module is connected with gas side stop valve, for by compression after refrigerant defeatedDeliver to described gas side stop valve.
Second aspect, provides a kind of multiple heat pump, comprises off-premises station and indoor set;
Wherein, the off-premises station that described off-premises station provides for first aspect;
Described indoor set comprises indoor heat exchanger and the 4th throttling arrangement, first of described indoor heat exchangerPort is connected with the first port of described indoor set, the second port of described indoor heat exchanger and describedThe second port of four throttling arrangements connects, the first port of described the 4th throttling arrangement and described indoor setSecond port connect;
The gas of described off-premises station is surveyed stop valve by the first port of the first branch pipe and described indoor setConnect, the liquid side stop valve of described off-premises station is by the second port of the second branch pipe and described indoor setConnect.
The third aspect, provides a kind of control method of multiple heat pump, is applied to second aspect instituteThe multiple heat pump providing, comprising:
When the first off-premises station is operated in defrosting mode lower time, open the first branch road of described the first off-premises stationWith the second branch road, close the 3rd branch road, thereby by described the first branch road, described compression module is exportedRefrigerant be delivered to described outdoor heat exchange module; By described the second branch road by the multiple from describedThe refrigerant that at least one indoor set of heat pump flows out is delivered to the compression molding of described the first off-premises stationPiece.
Off-premises station, multiple heat pump and control method thereof that embodiments of the invention provide, chamberRefrigerant after the compression module compression of outer machine, flows into outdoor heat exchange module by the first branch road, to chamberOutdoor heat exchanger in outer heat exchange module defrosts. Meanwhile, the refrigerant after compressed module compression,Flow at least one indoor set by four-way change-over valve, the refrigerant flowing out from indoor set flows through the second branch roadReturn compression module, form circulation, make indoor set continue heat supply, maintain indoor temperature, improve thusThe heating capacity of multiple heat pump in defrost process. Further, when indoor set is from defrostingAfter mode adjustment is heating mode, refrigerant and the tracheae that is connected indoor set and off-premises station, temperature is all more existingThere is technology higher, therefore can more promptly promote room temperature, thereby improve user's comfortableness.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below by rightDuring embodiment describes, the accompanying drawing of required use is briefly described, apparently, and in the following describesAccompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, notPay under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of a kind of off-premises station that Fig. 1 provides for embodiments of the invention one;
Under defrosting mode, refrigerant flows to the off-premises station that Fig. 2 provides for embodiments of the invention one showsIntention;
Off-premises station another kind of refrigerant stream under defrosting mode that Fig. 3 provides for embodiments of the invention oneTo schematic diagram;
The refrigerant of the off-premises station that Fig. 4 provides for embodiments of the invention one under heating mode flows to and showsIntention;
The refrigerant of the off-premises station that Fig. 5 provides for embodiments of the invention one under refrigeration mode flows to and showsIntention;
Another structural representation of a kind of off-premises station that Fig. 6 provides for embodiments of the invention one;
Off-premises station and indoor set in the multiple heat pump that Fig. 7 provides for embodiments of the invention twoThe schematic diagram of annexation;
The control method stream of a kind of multiple heat pump that Fig. 8 provides for embodiments of the invention threeJourney schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is enteredRow is described clearly and completely, and obviously, described embodiment is only the present invention's part embodiment,Instead of whole embodiment. Based on the embodiment in the present invention, those of ordinary skill in the art are not havingHave and make the every other embodiment obtaining under creative work prerequisite, all belong to the present invention protectionScope.
For the ease of the clear technical scheme of describing the embodiment of the present invention, in an embodiment of the present invention,Adopt the printed words such as " first ", " second " to enter the essentially identical identical entry of function and efficacy or similar itemRow is distinguished, and it will be appreciated by those skilled in the art that the printed words such as " first ", " second " are not to quantityLimit with execution order.
Especially, in embodiments of the invention by refrigerant, the flow process in the middle of off-premises station carries outDescribe, thereby the course of work of off-premises station is described. Unless otherwise noted, enforcement of the present inventionConnection in example between the module of indication or device, all cold by transmission between finger print piece or deviceThe connection that matchmaker's pipeline forms; The port of indication in embodiments of the invention, all finger print piece or dressPut the interface for flowing into or flow out refrigerant.
In addition, it will be understood by those of skill in the art that certain of the off-premises station mentioned in the present embodimentBeing connected between module or device and indoor set, not refer to this module or device directly and indoor setConnect. In actual application scenarios, between certain module or device and indoor set of off-premises station,May also need to connect by the device of some such as branch pipes etc.
Embodiment mono-
Embodiments of the invention provide a kind of off-premises station, and shown in Fig. 1, off-premises station 1 comprises:
Compression module 11, outdoor heat exchange module 13, the first branch road 14 and the second branch road 15.
Wherein, compression module 11, for compressing refrigerant.
Compression module 11 comprises two ports, and in off-premises station 1 course of work, refrigerant is from compression moldingThe first port 1101 of piece 11 flows into compression module 11, after compression module 11 compresses refrigerant,Refrigerant through overcompression is flowed out from the second port one 102 of compression module 11.
Outdoor heat exchange module 13, for carrying out heat exchange to refrigerant.
Outdoor heat exchange module 13 comprises outdoor heat exchanger (shown in Fig. 1), and outdoor heat exchanger is to refrigerantCarry out heat exchange, under different working modes, complete difference in functionality.
Under refrigeration mode, outdoor heat exchanger completes the function of condenser, refrigerant is carried out to heat exchange beRefer to absorb heat from refrigerant, thereby refrigerant temperature is reduced and condensation.
Under heating mode, outdoor heat exchanger completes the function of evaporimeter, refrigerant is carried out to heat exchange bePoint to refrigerant quantity of heat given up, become gaseous state thereby refrigerant temperature is raise. Outdoor heat exchanger is to refrigerantQuantity of heat given up, makes self temperature reduction, causes appearance frosting, affects heating effect, therefore needsDefrosting.
Under defrosting mode, outdoor heat exchanger carries out heat exchange to refrigerant and refers to from refrigerant absorption heat,Thereby play the effect of defrost.
The first branch road 14 comprises two ports, at off-premises station 1 in defrosting mode in the situation that, andThe first port 1401 of one branch road 14 is connected with the second port one 102 of compression module 11, firstSecond port one 402 on road 14 is connected with the second port one 302 of outdoor heat exchange module 13, and firstBranch road 14 is delivered to outdoor heat exchange module 13 for the refrigerant after compressed module 11 is compressed.
The second branch road 15 comprises two ports, at off-premises station 1 in defrosting mode in the situation that, andThe first port 1501 of two branch roads 15 is connected with the first port 1101 of compression module 11, secondSecond port one 502 on road 15 is connected with liquid side stop valve 18, and the second branch road 15 is for will be from liquid sideThe refrigerant that stop valve 18 flows out is delivered to compression module 11.
The first port 1301 of outdoor heat exchange module 13 connects the first port of compression module 111101, for the refrigerant flowing out from outdoor heat exchange module 13 is delivered to compression module 11.
The second port one 102 of compression module 11 is connected with gas side stop valve 17, after compressingRefrigerant be delivered to gas side stop valve 17.
In conjunction with the annexation between each module, below enter for the flow process of refrigerant under defrosting modeRow explanation.
Under defrosting mode, two circulation of the mobile formation of refrigerant, wherein the first circulation is that refrigerant is in compressionCirculation between module 11 and outdoor heat exchange module 13, for defrosting, the second circulation is that refrigerant existsCirculation between compression module 11 and indoor set, for maintaining the state of heating that is operated in of indoor set,To keep indoor temperature.
In conjunction with the refrigerant flow direction shown in arrow in Fig. 2, for the first circulation, compressed module 11Refrigerant after compression flows out from the second port one 102 of compression module 11, from of the first branch road 14One port 1401 flows into the first branch road 14, flows into outdoor from the second port one 402 of the first branch road 14Heat exchange module 13. Compressor is in the process that refrigerant is compressed, because compressor is to refrigerantCompressed action, the refrigerant of the compressor that makes to flow through remains on uniform temperature, when the refrigerant outdoor heat of flowing through is handed overWhen outdoor heat exchanger in die change piece 13, thereby heating clamber external heat exchanger reaches the effect of defrosting.
Refrigerant, from the first port 1301 of outdoor heat exchange module 13 flows out, flows into compression module 11The first port 1101, form circulation.
In conjunction with the refrigerant flow direction shown in arrow in Fig. 3, for the second circulation, compressed module 11Refrigerant after compression is from the second port one 102 of compression module 11 flows out, by gas side stop valve 17Flow into indoor set (not drawing in Fig. 3). Because the refrigerant of the compressor of flowing through remains on uniform temperature,Defrosting mode dirty enter the refrigerant of indoor set can make indoor set continue heat supply, therefore can maintainIndoor temperature. Compared to existing technology, improved multiple heat pump and heated energy in defrost processPower. Meanwhile, the second circulation also can maintain the temperature of the tracheae that connects off-premises station 1 and indoor set, because ofThis is when indoor set 2 is from defrosting mode is adjusted into heating mode, and with respect to prior art, refrigerant is gentleThe temperature of pipe, all a higher level, therefore can more promptly promote room temperature, thereby improve useThe comfortableness at family.
The refrigerant of indoor set of flowing through flows into off-premises station 1 by liquid side stop valve 18, by the second branch road 15The second port one 502 flow into the second branch road 15, flow into through the first port 1501 of the second branch road 15The first port 1101 of compression module 11, forms circulation.
The multiple heat pump that embodiments of the invention provide, after the compression module compression of off-premises stationRefrigerant, part flows into outdoor heat exchange module by the first branch road, in outdoor heat exchange moduleOutdoor heat exchanger defrosts. Meanwhile, the refrigerant after compressed module compression, part flows into indoor set,The refrigerant flowing out from indoor set flows back to compression module through the second branch road, forms circulation, and indoor set is heldContinuous heat supply, maintains indoor temperature, has improved thus multiple heat pump heating in defrost processAbility. Further, when indoor set is from defrosting mode is adjusted into heating mode, refrigerant and junction chamberThe tracheae of interior machine and off-premises station, temperature is all higher compared with prior art, therefore can more promptly promote chamberTemperature, thus user's comfortableness improved.
Further, in conjunction with Fig. 4, off-premises station 1 also comprises that the 3rd branch road 16, the three branch roads 16 wrapDraw together two ports, the first port 1601 and second of the outdoor heat exchange module 13 of the 3rd branch road 16Port one 302 connects, and the second port one 602 of the 3rd branch road 16 is connected with liquid side stop valve 18, usesHeat exchange module 13 and liquid side stop valve outside junction chamber under refrigeration mode and heating mode.
Under refrigeration mode or heating mode, the first branch road 14 and the second branch road 15 are in closing shapeState, the 3rd branch road 16 is in open mode. Under defrosting mode, the first branch road 14 and the second branch road15 in open mode, and the 3rd branch road 16 is in closed condition. Wherein, branch road is in open modeRefer to, refrigerant this branch road of can flowing through, branch road refers in closed condition, refrigerant can not be flowed through thisRoad.
Off-premises station 1 also comprises four-way change-over valve 12, and the gentle side stop valve of outdoor heat exchange module 13 is equalBe connected with compression module 11 by four-way change-over valve 12.
Four-way change-over valve 12 comprises 4 ports, is respectively used under different working modes refrigerantThe flow direction is controlled. Refrigerant, from the second port one 102 of compression module 11 flows out, passes through compression moldingConnection between piece 11 and four-way change-over valve 12 flows into four-way change-over valve 12. Four-way change-over valve 12 is logicalCross different port refrigerant transmission is delivered to other module or device. The first end of four-way change-over valve 12Mouth 1201 is connected with the second port one 102 of compression module 11, the second port of four-way change-over valve 121202 are connected with the first port 1101 of compression module 11, the 3rd port one 203 of four-way change-over valve 12Survey stop valve with gas and be connected, the 4th port one 204 and outdoor heat exchange module 13 of four-way change-over valve 12The first port 1301 connect.
In conjunction with the explanation in Fig. 2 and Fig. 3, refrigerant under defrosting mode being flowed to, under defrosting mode, four-wayThe first port 1201 of reversal valve 12 is connected with the 3rd port one 203, the 4th of four-way change-over valve 12Port one 204 is connected with the second port one 202. , under defrosting mode, the second circulation is from compression module 11After outflow, flow to gas side stop valve 17 by four-way change-over valve 12.
To off-premises station 1 under heating mode and under refrigeration mode time, the flow direction of refrigerant respectively belowDescribe.
The duty of four-way change-over valve 12 under heating mode, with the work shape under defrosting modeState is identical, and the first port 1201 of four-way change-over valve 12 is connected with the 3rd port one 203, four-wayThe 4th port one 204 of reversal valve 12 is connected with the second port one 202.
In conjunction with the refrigerant flow direction shown in arrow in Fig. 4, under heating mode, compressed module 11Refrigerant after compression flows out from the second port one 102 of compression module 11, by four-way change-over valve 12The first port 1201 flow into four-way change-over valve 12. From the first port 1201 of four-way change-over valve 12The refrigerant flowing into flows out from the 3rd port one 203 of four-way change-over valve 12, and further passes through indoor setThe first port 201 flow into indoor set.
The refrigerant of indoor set of flowing through flows into off-premises station 1 by liquid side stop valve 18, by the 3rd branch road 16The second port one 602 flow into the 3rd branch road 16, flow into through the first port 1601 of the 3rd branch road 16The second port one 302 of outdoor heat exchange module 13, and from the first port of outdoor heat exchange module 131301 flow into the 4th port one 204 of four-way change-over valve 12. From the 4th port of four-way change-over valve 121204 refrigerants that flow into flow out from the second port one 202 of four-way change-over valve 12, and further flow into and pressThe first port 1101 of contracting module 11, forms circulation.
In conjunction with the refrigerant flow direction shown in arrow in Fig. 5, under refrigeration mode, four-way change-over valve 12The 4th port one 204 be connected with the first port 1201 of four-way change-over valve 12, four-way change-over valve 12The second port one 202 be connected with the 3rd port one 203 of four-way change-over valve 12.
Refrigerant after compressed module 11 compressions flows out from the second port one 102 of compression module 11,The first port 1201 by four-way change-over valve 12 flows into four-way change-over valve 12, from four-way change-over valve12 the 4th port one 204 flows out, and flows into by the first port 1301 of outdoor heat exchange module 13Outdoor heat exchange module 13, flows through after outdoor heat exchange module 13 and the 3rd branch road 16, passes throughLiquid side stop valve 18 flows into indoor set.
The refrigerant of indoor set of flowing through flows into off-premises station 1 by gas side stop valve 17, by four-way change-over valve12 the 3rd port one 203 flows into four-way change-over valve 12, from the second port one 202 of four-way change-over valve 12After outflow, flow into the first port 1101 of compression module 11, form circulation.
For the off-premises station 1 in the corresponding embodiment of Fig. 1, shown in Fig. 6, to off-premises station 1Concrete structure further illustrate as follows:
1 >, the first branch road 14, the second branch road 15 and the 3rd branch road 16
The first branch road 14 comprises first throttle device, and the two ends of first throttle device are respectively as firstThe first port 1401 of branch road 14 and the second port one 402. Optionally, first throttle device 141 canThink electric expansion valve.
The second branch road 15 comprises the second throttling arrangement, and the two ends of the second throttling arrangement are respectively as secondThe first port 1501 of branch road 15 and the second port one 502. Optionally, the second throttling arrangement 151 canThink magnetic valve or electric expansion valve.
The 3rd branch road 16 comprises the 3rd throttling arrangement, and the two ends of the 3rd throttling arrangement are respectively as the 3rdThe first port 1601 of branch road 16 and the second port one 602. Optionally, the 3rd throttling arrangement 161It can be electric expansion valve.
2 >, compression module 11
Compression module 11 comprises compressor 111 and check valve 112.
The input of compressor 111 is as the first port 1101 of compression module 11.
The output of compressor 111 is connected with the input of check valve 112.
The output of check valve 112 is as the second port one 102 of compression module 11.
Optionally, off-premises station 1 also comprises pressure sensor 116, exports for measuring compressor 111The refrigerant air pressure at end place. Thereby according to the measured atmospheric pressure value of pressure sensor 116 to multiple heat pumpThe mode of operation of system off-premises station 1 is adjusted. For example,, when the measured gas of pressure sensor 116Pressure value exceedes default atmospheric pressure value, and duration length exceedes predetermined threshold value, closes defrosting mode.Concrete, default atmospheric pressure value can be made as 2.9 MPas, and predetermined threshold value can be made as 20 seconds.
Optionally, off-premises station 1 also comprises gas-liquid separator 113. To prevent that compressor 111 from liquid occurringCompression.
The input of gas-liquid separator 113 is connected with the second port one 202 of four-way change-over valve 12.
The output of gas-liquid separator 113 is connected with the first port 1101 of compression module 11.
Preferably, off-premises station 1 also comprises oil eliminator 114 and oil return capillary 115.
The input of oil eliminator 114 is connected with the second port one 102 of compression module 11.
The gas output end of oil eliminator 114 is connected with the first port 1201 of four-way change-over valve 12.
The oily output of oil eliminator 114 is connected with one end of oil return capillary 115.
The other end of oil return capillary 115 is connected with the input of gas-liquid separator.
Especially, being connected between oil eliminator 114 and oil return capillary 115, and oil return capillaryBeing connected between pipe 115 and the input of gas-liquid separator 113, for delivery of isolated oil, andNon-refrigerant.
3 >, outdoor heat exchange module 13
Outdoor heat exchange module 13 comprises outdoor heat exchanger 131. The two ends of outdoor heat exchanger 131 respectivelyAs the first port 1301 and second port one 302 of outdoor heat exchange module 13.
Optionally, outdoor heat exchange module 13 also comprises temperature sensor 132, changes outward for measuring chamberThe refrigerant temperature of hot device 131 first ports. Thereby the temperature measured according to temperature sensor 132Value is adjusted the mode of operation of multiple heat pump off-premises station 1. For example, work as temperature sensor132 measured temperature values are greater than preset temperature value, and duration length exceedes predetermined threshold value,Close defrosting mode. Concrete, preset temperature value can be made as 12 degrees Celsius, and predetermined threshold value canBe made as 5 seconds.
The off-premises station that embodiments of the invention provide, the refrigerant after the compression of compressed module, by theOne branch road flows into outdoor heat exchange module, and the outdoor heat exchanger in outdoor heat exchange module is removedFrost. Meanwhile, the refrigerant after the compression of compressed module, by four-way change-over valve flow at least one indoorMachine, the refrigerant flowing out from indoor set flows back to compression module through the second branch road, forms circulation, makes indoorMachine continues heat supply, maintains indoor temperature, has improved thus multiple heat pump in defrost processHeating capacity. Further, when indoor set is from defrosting mode is adjusted into heating mode, refrigerant and companyConnect the tracheae of indoor set and off-premises station, temperature is all higher compared with prior art, therefore can more promptly carryRise room temperature, thereby improved user's comfortableness.
Embodiment bis-
The off-premises station providing based on embodiment mono-, embodiments of the invention two provide a kind of multiple heatPumping system, multiple heat pump comprise more than one or one off-premises station 1 and at least one indoorMachine 2, Fig. 7 is the signal of multiple heat pump while comprising two off-premises stations 1 and two indoor sets 2Figure, wherein the structure of off-premises station 1 except the part being connected with indoor set 2 do not draw.
Indoor set 2 comprises indoor heat exchanger 21 and the 4th throttling arrangement 22, of indoor heat exchanger 21One port 2101 is connected with the first port 201 of indoor set 2, the second port of indoor heat exchanger 212102 are connected with the second port 2202 of the 4th throttling arrangement 22, first of the 4th throttling arrangement 22Port 2201 is connected with the second port 202 of indoor set 2.
The gas of off-premises station 1 is surveyed stop valve 17 by the first port of the first branch pipe 3 and indoor set 2201 connect, and the liquid side stop valve 18 of off-premises station 1 is by the second branch pipe 4 and second of indoor set 2Port 202 connects.
Under defrosting mode and heating mode, refrigerant is surveyed stop valve 17 from gas and is flowed into the of indoor set 2One port 201, and flow into liquid side stop valve 18 by the second port 202 of indoor set 2.
Under refrigeration mode, refrigerant flows into the second port 202 of indoor set 2 from liquid side stop valve 18,And flow into gas survey stop valve 17 by the first port 201 of indoor set 2.
The multiple heat pump that embodiments of the invention provide, after the compression module compression of off-premises stationRefrigerant, flow into outdoor heat exchange module by the first branch road, outdoor in outdoor heat exchange moduleHeat exchanger defrosts. Meanwhile, the refrigerant after compressed module compression, flows into by four-way change-over valveAt least one indoor set, the refrigerant flowing out from indoor set flows back to compression module through the second branch road, forms ringStream, makes indoor set continue heat supply, maintains indoor temperature, has improved thus multiple heat pump and has existedHeating capacity in defrost process. Further, when indoor set is adjusted into heating mode from defrosting modeAfter, refrigerant and the tracheae that is connected indoor set and off-premises station, temperature is all higher compared with prior art, therefore canMore promptly to promote room temperature, thereby improve user's comfortableness.
Embodiment tri-
The multiple heat pump providing based on embodiment bis-, the embodiment of the present invention three provides one manyThe control method of connection formula heat pump, shown in Fig. 8, comprises the following steps:
801, under defrosting mode, open the first branch road and second branch road of the first off-premises station, closeThe 3rd branch road.
Multiple heat pump comprises at least one off-premises station, and the present embodiment is to carry out the first off-premises stationExemplary illustration is done in defrosting, and wherein the first off-premises station is the arbitrary off-premises station in multiple heat pump.
The duty of branch road comprises open mode and closed condition. Branch road refers in open mode,Refrigerant this branch road of can flowing through, branch road refers in closed condition, refrigerant this branch road of can not flowing through.
In conjunction with the structure of the off-premises station shown in Fig. 6, the first off-premises station comprises the first branch road, the second branch roadWith the 3rd branch road, by opening or close one of them or multiple branch road, off-premises station is existedUnder different working modes, complete difference in functionality. Under defrosting mode, only need the first branch road and the second branch roadIn open mode, the 3rd branch road under defrosting mode in closed condition.
Under defrosting mode, by the first branch road, the refrigerant of compression module output is delivered to outdoor heat and hands overDie change piece. Concrete, the first port of four-way change-over valve is connected with the 3rd port, four-way change-over valveThe 4th port is connected with the second port. In conjunction with the embodiments one, under defrosting mode, the mobile formation of refrigerantTwo circulation, wherein the first circulation is the ring of refrigerant between compression module and outdoor heat exchange moduleStream, refrigerant flow process as shown in Figure 2, the first circulation outdoor changing in outdoor heat exchange module of flowing throughWhen hot device, thereby heating clamber external heat exchanger reaches the effect of defrosting.
When branch road is during in open mode, can regulate the flow velocity of the refrigerant of this branch road of flowing through.Taking the first branch road as example, first throttle device can be electric expansion valve, by regulating electronic expansionThe aperture of valve, can adjust to the flow velocity of refrigerant in the first branch road. Wherein, the flow velocity of refrigerant isRefer to flow through the cold medium flux of branch road within the unit interval, specifically can be with flowing through refrigerant in the unit intervalVolume or quality etc. are weighed.
Preferably, for improving defrosting effect, shorten defrosting time, the aperture of first throttle device canBe adjusted to maximum.
In conjunction with the embodiments one, under defrosting mode, will flow out from least one indoor set by the second branch roadRefrigerant be delivered to the compression module of the first off-premises station, form the circulation between indoor and outdoor, make indoorMachine continues heat supply, maintains indoor temperature, has improved thus multiple heat pump in defrost processHeating capacity. Concrete, two circulation of mobile formation of refrigerant, wherein the second circulation is that refrigerant is being pressedCirculation between contracting module and indoor set, refrigerant flow process as shown in Figure 3, the indoor set of flowing through coldMatchmaker flows into the first port of compression module through the first port of the second branch road, form circulation.
802, close defrosting mode when pre-conditioned when meeting.
Wherein, pre-conditioned comprise following at least one:
The temperature value that the temperature sensor of the first off-premises station records is greater than preset temperature value.
The atmospheric pressure value that the pressure sensor of the first off-premises station records is greater than default atmospheric pressure value.
The work duration of the off-premises station of the first off-premises station under defrosting mode exceedes default duration.
For example, in a kind of concrete application scenarios, the temperature value measured when temperature sensor is greater thanWhen preset temperature value, close defrosting mode. Further, for ensureing control stability, pass in temperatureThe measured temperature value of sensor is greater than preset temperature value, and when the duration, length exceeded predetermined threshold value,Close defrosting mode. Concrete, preset temperature value can be made as 12 degrees Celsius, and predetermined threshold value canBe made as 5 seconds.
Or when the measured atmospheric pressure value of pressure sensor exceedes default atmospheric pressure value, and the duration is longDegree exceedes predetermined threshold value, closes defrosting mode. Concrete, default atmospheric pressure value can be made as 2.9 millionHandkerchief, predetermined threshold value can be made as 20 seconds.
Or, in the time that the work duration of off-premises station under defrosting mode exceedes default duration, close defrostingPattern. Concrete, default duration can be 600 seconds.
803, under heating mode or refrigeration mode, close the first branch road and the second branch road, openThe 3rd branch road.
Under refrigeration mode or refrigeration mode, the first branch road and the second branch road be in closed condition, andThree branch roads, in open mode, are controlled the flow direction of refrigerant by four-way change-over valve, complete refrigerationOr heat process.
Under refrigeration mode, the 4th port of four-way change-over valve is connected with the first port, the second port withThe 3rd port connects. The 3rd branch road is by indoor at least one the refrigerant flowing out from outdoor heat exchange moduleMachine is carried.
Concrete, in conjunction with the refrigerant flow process shown in Fig. 5, and the indoor set shown in Fig. 7 and chamberAnnexation between outer machine, the gaseous coolant of the HTHP flowing out from compression module, changes through four-wayFlow into outdoor heat exchange module to valve, and be condensed into the liquid refrigerants of cryogenic high pressure, through liquid side stop valveFlow into indoor set with the second branch pipe. Flow into the liquid refrigerants of indoor set through in process of refrigerastion absorption chamberHeat becomes the gaseous state of high-temperature low-pressure, and flows back to four-way commutation by the gentle side stop valve of the first branch pipeValve, finally flows into compression module and forms circulation.
Under heating mode, the first port of four-way change-over valve is connected with the 3rd port, the 4th port withThe second port connects. The 3rd branch road is delivered to outdoor heat by the refrigerant flowing out from least one indoor set and hands overDie change piece.
Concrete, in conjunction with the refrigerant flow process shown in Fig. 4, and the indoor set shown in Fig. 7 and chamberAnnexation between outer machine, the gaseous coolant of the HTHP flowing out from compression module, passes through four-wayReversal valve, to the popular control action of refrigerant, flows into indoor set through gas side stop valve and the first branch pipe.Flow into the liquid refrigerants of indoor set through heating process to indoor liquid of emitting heat and become cryogenic high pressureState refrigerant, through the second branch pipe and liquid side stop valve with flow back to the 3rd branch road, the liquid state of cryogenic high pressure is coldMatchmaker becomes low-temp low-pressure gas-liquid two-phase refrigerant after the 3rd throttling arrangement reducing pressure by regulating flow, and the outdoor heat of flowing through is handed overWhen die change piece, absorb heat gasification, finally flow into compression module through four-way change-over valve and form circulation.
804,, in the situation that multiple heat pump comprises N platform off-premises station, N platform off-premises station is dividedIn time, defrosts.
Wherein N is greater than 1 integer.
Timesharing defrosting refers to, in the situation that multiple heat pump comprises N platform off-premises station, when N platform chamberIn outer machine, have an off-premises station to be operated in defrosting mode lower time, other off-premises station is all operated under heating mode.Concrete, in the time that the mode of operation of the first off-premises station is defrosting mode, by the mode of operation of the second off-premises stationBe adjusted into heating mode. Wherein, the second off-premises station be N platform outdoor in arbitrary except the first off-premises stationOff-premises station.
For example, when N platform indoor set is worked after a period of time under heating mode, outdoor heat exchanger separatelyUpper meeting frosting. Now first the n platform in N platform is switched to defrosting mode, when n platform off-premises station meetsMeet while closing defrosting mode pre-conditioned, switch to heating mode, simultaneously by n+1 platform off-premises stationSwitch to defrosting mode. Wherein n and n+1 are 0 to N integer.
805, adjust the rotation speed of the fan of off-premises station and indoor set.
When the first off-premises station is operated in defrosting mode lower time, the rotation speed of the fan of the first off-premises station is adjusted intoOne predetermined threshold value, is adjusted into the second predetermined threshold value by the rotation speed of the fan of the second off-premises station.
Wherein, the first predetermined threshold value is less than the second predetermined threshold value. Preferably, the first predetermined threshold value approach orPerson equals minimum speed value, and the second predetermined threshold value approaches or equals maximum (top) speed value.
Further, the atmospheric pressure value recording when the pressure sensor of the first off-premises station is less than predetermined threshold valueTime, the rotation speed of the fan of at least one indoor set of multiple heat pump is adjusted into minimum speed. WhenWhen the atmospheric pressure value that pressure sensor records is greater than or equal to predetermined threshold value, increase rotation speed of the fan, windFan rotating speed is specifically as follows the rotating speed under common heating mode. Preferably, predetermined threshold value specifically canBe 2.3 MPas.
The control method of the multiple heat pump that embodiments of the invention provide, by defrosting mouldUnder formula, open the first branch road and second branch road of off-premises station, close the 3rd branch road, and four-way change-over valveThe regulating action that refrigerant is flowed to, the refrigerant after compressed module compression, flows into chamber by the first branch roadOuter heat exchange module, defrosts to the outdoor heat exchanger in outdoor heat exchange module. Meanwhile, through pressingRefrigerant after the compression of contracting module, flows into indoor set by four-way change-over valve, the refrigerant flowing out from indoor setFlow back to compression module through the second branch road, form the circulation between indoor and outdoor machine, make indoor set continue to supplyHeat, maintains indoor temperature, has improved thus the heating capacity of multiple heat pump in defrost process.Further, when indoor set is from defrosting mode is adjusted into heating mode, refrigerant be connected indoor set withThe tracheae of off-premises station, temperature is all higher compared with prior art, therefore can more promptly promote room temperature, fromAnd improve user's comfortableness. Further, multiple heat pump comprises more than one off-premises stationSituation under, the mode defrosting by timeshare rotation, can further maintain indoor temperature, ensure useFamily comfortableness.
The above, be only the specific embodiment of the present invention, but not office of protection scope of the present inventionBe limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in, canExpect easily changing or replacing, within all should being encompassed in protection scope of the present invention. Therefore, the present inventionProtection domain should described be as the criterion with the protection domain of claim.
Claims (18)
1. an off-premises station, is characterized in that, comprising:
Compression module, outdoor heat exchange module, the first branch road and the second branch road;
At described off-premises station in defrosting mode in the situation that,
The first port of described the second branch road is connected with the first port of described compression module, described secondSecond port on road is connected with liquid side stop valve, and described the second branch road will be for flowing from described liquid side stop valveThe refrigerant going out is delivered to described compression module;
The first port of described the first branch road is connected with the second port of described compression module, described firstSecond port on road is connected with the second port of described outdoor heat exchange module, and described the first branch road is used for willRefrigerant after described compression module compression is delivered to described outdoor heat exchange module;
The first port of described outdoor heat exchange module connects the first port of described compression module, for inciting somebody to actionThe refrigerant flowing out from described outdoor heat exchange module is delivered to described compression module;
The second port of described compression module is connected with gas side stop valve, for the refrigerant after compression is carriedTo described gas side stop valve.
2. off-premises station according to claim 1, is characterized in that, described off-premises station also comprisesThree branch roads;
The first port of described the 3rd branch road is connected with the second port of described outdoor heat exchange module, described inThe second port of the 3rd branch road is connected with described liquid side stop valve, under refrigeration mode and heating modeConnect described outdoor heat exchange module and described liquid side stop valve.
3. off-premises station according to claim 2, is characterized in that,
Described the first branch road comprises first throttle device, and the two ends of described first throttle device are respectively as instituteState the first port and second port of the first branch road;
Described the second branch road comprises the second throttling arrangement, and the two ends of described the second throttling arrangement are respectively as instituteState the first port and second port of the second branch road;
Described the 3rd branch road comprises the 3rd throttling arrangement, and the two ends of described the 3rd throttling arrangement are respectively as instituteState the first port and second port of the 3rd branch road.
4. off-premises station according to claim 1, is characterized in that, described compression module comprises pressureContracting machine and check valve;
The input of described compressor is as the first port of described compression module;
The output of described compressor is connected with the input of described check valve;
The output of described check valve is as the second port of described compression module.
5. off-premises station according to claim 4, is characterized in that, described off-premises station also comprises:
Pressure sensor, for measuring the refrigerant air pressure at described compressor output end place.
6. off-premises station according to claim 1, is characterized in that, described off-premises station also comprises fourLogical reversal valve;
Described outdoor heat exchange module and described gas side stop valve all by described four-way change-over valve with described inCompression module connects;
The first port of described four-way change-over valve is connected with the second port of described compression module, described four-wayThe second port of reversal valve is connected with the first port of described compression module, the 3rd of described four-way change-over valvePort is surveyed stop valve with described gas and is connected, the 4th port of described four-way change-over valve and described outdoor heat exchangeThe first port of module connects.
7. off-premises station according to claim 6, is characterized in that, described off-premises station also comprises gas-liquidSeparator;
The input of described gas-liquid separator is connected with the second port of described four-way change-over valve;
The output of described gas-liquid separator is connected with the first port of described compression module.
8. off-premises station according to claim 7, is characterized in that, described off-premises station also comprises oil contentFrom device and oil return capillary;
The input of described oil eliminator is connected with the second port of described compression module;
The gas output end of described oil eliminator is connected with the first port of described four-way change-over valve;
The oily output of described oil eliminator is connected with described oil return one end capillaceous;
The described oil return other end capillaceous is connected with the input of described gas-liquid separator.
9. off-premises station according to claim 1, is characterized in that, described outdoor heat exchange moduleComprise outdoor heat exchanger;
The two ends of described outdoor heat exchanger are respectively as first port and of described outdoor heat exchange moduleTwo ports.
10. off-premises station according to claim 9, is characterized in that, described outdoor heat exchange moduleAlso comprise:
Temperature sensor, for measuring the refrigerant temperature of described outdoor heat exchanger the first port.
11. 1 kinds of multiple heat pumps, is characterized in that, comprise off-premises station and indoor set,
Wherein, described off-premises station is the off-premises station described in claim 1-10 any one;
Described indoor set comprises indoor heat exchanger and the 4th throttling arrangement, the first end of described indoor heat exchangerMouthful be connected the second port of described indoor heat exchanger and described Section four with the first port of described indoor setThe second port of stream device connects, second of the first port of described the 4th throttling arrangement and described indoor setPort connects;
The gas of described off-premises station is surveyed stop valve and is connected by the first port of the first branch pipe and described indoor setConnect, the liquid side stop valve of described off-premises station connects by the second port of the second branch pipe and described indoor setConnect.
12. multiple heat pumps according to claim 11, is characterized in that,
Described multiple heat pump comprises more than one or one off-premises station.
13. 1 kinds are applied to the control method of the multiple heat pump as described in claim 11 or 12,It is characterized in that, comprising:
When the first off-premises station is operated in defrosting mode lower time, open described the first off-premises station the first branch road andThe second branch road, closes the 3rd branch road.
14. methods according to claim 13, is characterized in that, described method also comprises:
Close defrosting mode when pre-conditioned when meeting; Described pre-conditioned comprise following at least one:
The temperature value that the temperature sensor of described the first off-premises station records is greater than preset temperature value;
The atmospheric pressure value that the pressure sensor of described the first off-premises station records is greater than default atmospheric pressure value;
The work duration of described the first off-premises station under defrosting mode exceedes default duration.
15. methods according to claim 13, is characterized in that, described method also comprises:
When described the first off-premises station is operated in heating mode or refrigeration mode lower time, close described firstRoad and described the second branch road, open described the 3rd branch road;
Under refrigeration mode, by described the 3rd branch road by the outdoor heat exchange mould from described the first off-premises stationThe refrigerant that piece flows out is carried to described at least one indoor set;
Under heating mode, by described the 3rd branch road by the refrigerant flowing out from described at least one indoor setBe delivered to described outdoor heat exchange module.
16. according to the method described in claim 13-15 any one, it is characterized in that, described method alsoComprise:
In the situation that described multiple heat pump comprises N platform off-premises station,
In the time that the mode of operation of described the first off-premises station is defrosting mode, the mode of operation of the second off-premises station is adjustedWhole is heating mode; Wherein N is greater than 1 integer, and described the second off-premises station is in described N platform off-premises stationArbitrary off-premises station except described the first off-premises station.
17. methods according to claim 16, is characterized in that, described method also comprises:
When described the first off-premises station is operated in defrosting mode lower time, the rotation speed of the fan of described the first off-premises station is adjustedWhole is the first predetermined threshold value, and the rotation speed of the fan of described the second off-premises station is adjusted into the second predetermined threshold value; DescribedThe first predetermined threshold value is less than described the second predetermined threshold value.
18. methods according to claim 16, is characterized in that, described method also comprises:
When the atmospheric pressure value recording when the pressure sensor of described the first off-premises station is less than predetermined threshold value, by instituteThe rotation speed of the fan of the indoor set of the multiple heat pump of stating is adjusted into minimum speed.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108068A (en) * | 2019-05-23 | 2019-08-09 | 百尔制冷(无锡)有限公司 | The hot gas defrosting system and its defrosting method of refrigeration system in parallel |
| CN110736211A (en) * | 2019-09-26 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110736203A (en) * | 2019-09-25 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN111928424A (en) * | 2020-06-30 | 2020-11-13 | 青岛海尔空调电子有限公司 | Multi-split air conditioning system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916538A (en) * | 2005-08-18 | 2007-02-21 | 松下电器产业株式会社 | Air conditioner device |
| CN101660808A (en) * | 2008-08-29 | 2010-03-03 | Tcl集团股份有限公司 | Air conditioner and frost removal control method thereof |
| JP2013137124A (en) * | 2011-12-28 | 2013-07-11 | Hitachi Appliances Inc | Refrigeration cycle device |
| CN103423927A (en) * | 2012-05-15 | 2013-12-04 | 约克广州空调冷冻设备有限公司 | Defrosting method used for air source heat pump system |
| CN103968503A (en) * | 2014-04-14 | 2014-08-06 | 广东美的暖通设备有限公司 | Air conditioner outdoor unit, and defrosting method and device for air conditioner |
-
2015
- 2015-06-16 CN CN201510334238.2A patent/CN105588222A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1916538A (en) * | 2005-08-18 | 2007-02-21 | 松下电器产业株式会社 | Air conditioner device |
| CN101660808A (en) * | 2008-08-29 | 2010-03-03 | Tcl集团股份有限公司 | Air conditioner and frost removal control method thereof |
| JP2013137124A (en) * | 2011-12-28 | 2013-07-11 | Hitachi Appliances Inc | Refrigeration cycle device |
| CN103423927A (en) * | 2012-05-15 | 2013-12-04 | 约克广州空调冷冻设备有限公司 | Defrosting method used for air source heat pump system |
| CN103968503A (en) * | 2014-04-14 | 2014-08-06 | 广东美的暖通设备有限公司 | Air conditioner outdoor unit, and defrosting method and device for air conditioner |
Non-Patent Citations (1)
| Title |
|---|
| 上海市安全生产科学研究所: "《制冷与空调作业人员安全技术》", 30 September 2009 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108068A (en) * | 2019-05-23 | 2019-08-09 | 百尔制冷(无锡)有限公司 | The hot gas defrosting system and its defrosting method of refrigeration system in parallel |
| CN110108068B (en) * | 2019-05-23 | 2024-05-10 | 百尔制冷(无锡)有限公司 | Hot gas defrosting system of parallel refrigerating system and defrosting method thereof |
| CN110736203A (en) * | 2019-09-25 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110736203B (en) * | 2019-09-25 | 2021-11-23 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN110736211A (en) * | 2019-09-26 | 2020-01-31 | 青岛海尔空调器有限总公司 | Control method and control device for defrosting of air conditioner and air conditioner |
| CN111928424A (en) * | 2020-06-30 | 2020-11-13 | 青岛海尔空调电子有限公司 | Multi-split air conditioning system |
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