CN106766417A - Air-conditioning system - Google Patents

Air-conditioning system Download PDF

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Publication number
CN106766417A
CN106766417A CN201710171065.6A CN201710171065A CN106766417A CN 106766417 A CN106766417 A CN 106766417A CN 201710171065 A CN201710171065 A CN 201710171065A CN 106766417 A CN106766417 A CN 106766417A
Authority
CN
China
Prior art keywords
valve
heat exchanger
valve port
air
outdoor heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710171065.6A
Other languages
Chinese (zh)
Other versions
CN106766417B (en
Inventor
刘畅
韩鹏
芦占澜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201710171065.6A priority Critical patent/CN106766417B/en
Publication of CN106766417A publication Critical patent/CN106766417A/en
Application granted granted Critical
Publication of CN106766417B publication Critical patent/CN106766417B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F25B47/022—Defrosting cycles hot gas defrosting
    • F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0251—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units being defrosted alternately
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0252—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units with bypasses
    • F25B2313/02522—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units with bypasses during defrosting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0252—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units with bypasses
    • F25B2313/02523—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units with bypasses during heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0253—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in parallel arrangements
    • F25B2313/02532—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in parallel arrangements during defrosting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0253—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in parallel arrangements
    • F25B2313/02533—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in parallel arrangements during heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0254—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in series arrangements
    • F25B2313/02542—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in series arrangements during defrosting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/025—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units
    • F25B2313/0254—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in series arrangements
    • F25B2313/02543—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple outdoor units in series arrangements during heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Multiple-Way Valves (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a kind of air-conditioning system, including：Indoor heat exchanger, handover module and at least two outdoor heat exchanger branch roads；Wherein, outdoor heat exchanger branch road includes the outdoor heat exchanger and first throttle device of series connection, and first throttle device is connected with indoor heat exchanger；Handover module includes：Corresponded with outdoor heat exchanger branch road, and make the first reversal valve that outdoor heat exchanger branch road and indoor heat exchanger switch between series connection and parallel connection.Above-mentioned air-conditioning system on the basis of heat supply, improves defrost effect in defrost；Simultaneously so that the pipeline structure of whole air-conditioning system is relatively simple, also simplify the control system of whole air-conditioning system.

Description

Air-conditioning system
Technical field
The present invention relates to air-conditioning technical field, more specifically to a kind of air-conditioning system.
Background technology
Air-conditioning system is in heating mode, and outdoor heat exchanger temperature is relatively low, the problem for being easier to frosting occur.Work as outdoor heat exchange Device frosting to a certain extent when, heat exchange efficiency decline, now need to carry out defrost.
At present, conventional defrosting method is：Air-conditioning is changed to refrigeration mode, defrost is carried out to outdoor heat exchanger, now, Indoor fan is out of service, and to prevent the cold wind under refrigerating state from getting in, then air-conditioning cannot be heated during defrost, Indoor temperature is decreased, and the comfort level that user uses is poor.
In order to improve the comfort level that user uses, heat supply is realized during defrost, connected using two outdoor heat exchangers Connection, and two outdoor heat exchangers alternately realize evaporator mode, condenser modes by valve and pipeline, so as to realize changing Continue heat supply when white.
In said structure, two outdoor heat exchangers are connected with indoor heat exchanger, then entered by the refrigerant of indoor heat exchanger Entering an outdoor heat exchanger carries out defrost, because refrigerant is radiated through indoor heat exchanger, then into outdoor heat exchanger The refrigerant temperature of frost is relatively low, and defrost effect is poor.
In sum, how in defrost on the basis of heat supply, improve defrost effect, be current those skilled in the art urgently Problem to be solved.
The content of the invention
It is an object of the invention to provide a kind of air-conditioning system, in defrost on the basis of heat supply, defrost effect is improved.
To achieve these goals, the present invention provides following technical scheme：
A kind of air-conditioning system, including：Indoor heat exchanger, handover module and at least two outdoor heat exchanger branch roads；
Wherein, the outdoor heat exchanger branch road includes the outdoor heat exchanger and first throttle device of series connection, the first segment Stream device is connected with the indoor heat exchanger；
The handover module includes：Corresponded with the outdoor heat exchanger branch road, and make the outdoor heat exchanger branch road And the first reversal valve that the indoor heat exchanger is switched between series connection and parallel connection.
Preferably, the handover module also includes：For making the outdoor heat exchanger branch road with the indoor heat exchanger simultaneously The parallel pipeline of connection, for the series pipe for making the outdoor heat exchanger branch road be connected with the indoor heat exchanger；
First reversal valve is by switching the parallel pipeline and the series pipe with the outdoor heat exchanger branch road Connection switching the connection status of the outdoor heat exchanger branch road and the indoor heat exchanger.
Preferably, the parallel pipeline and the reversing arrangement for being connected the air-conditioning system and the pipeline of the indoor heat exchanger It is connected, or the parallel pipeline is connected with the pipeline for being connected exhaust outlet of compressor and the reversing arrangement.
Preferably, first reversal valve is two-position three-way valve, the room when two-position three-way valve is in the first valve position External heat exchanger branch road and the indoor heat exchanger are in parallel；The outdoor heat exchanger branch when two-position three-way valve is in the second valve position Road and the indoor heat exchanger are connected.
Preferably, first reversal valve includes main valve and control assembly；
The main valve includes valve body and the valve element in the valve body, and the valve element is connected with the valve seal and will The inner chamber of the valve body is divided into high pressure chest and working chamber；
The valve body has the high pressure valve port and at least two works isolated with the high pressure chest connected with the high pressure chest Make valve port, the high pressure valve port and the reversing arrangement for being connected the air-conditioning system and the pipeline connection of exhaust outlet of compressor；
The control assembly controls the valve core movement to change the connected state of the work valve port.
Preferably, the valve element has the conducting structure and plugging structure being respectively positioned in the working chamber, the control group Part controls the valve core movement so that the conducting structure changes the connected state of the work valve port, and the plugging structure is used for The work valve port that closure is not connected with the conducting structure.
Preferably, the work valve port is three, the respectively first work valve port, the second work valve port and the 3rd operating valve Mouthful；
Wherein, when the valve element is in the first valve position, the first work valve port and the second work valve port pass through Conducting structure connection, the 3rd work valve port is closed by the plugging structure, the indoor heat exchanger and the outdoor Heat exchanger branch road is connected；
When the valve element is in the second valve position, the second work valve port is led with the described 3rd work valve port by described Logical fabric connectivity, the first work valve port is closed by the plugging structure, the indoor heat exchanger and the outdoor heat exchanger Branch circuit parallel connection.
Preferably, the control assembly includes pilot valve and magnet coil, wherein, guide described in the solenoid controlled Valve position is changed to control the main valve in valve replacement valve position.
Preferably, the pilot valve has the first valve port, the second valve port, the 3rd valve port and the 4th valve port, the pilot valve The first valve port connected with the high pressure valve port, the of the pilot valve in the case where the magnet coil obtains electric and/or power failure state Three valve ports are connected with the low pressure line of the air-conditioning system, the second valve port of the pilot valve and the 4th valve port of the pilot valve Connected with two driving chambers of the valve body respectively, two driving chambers are respectively positioned at the both sides of the valve element；
When the pilot valve is in the first valve position, the first valve port of the pilot valve connects with the 4th valve port of the pilot valve Logical, the second valve port of the pilot valve is connected with the 3rd valve port of the pilot valve, and the valve element is in the first valve position；The elder generation When pilot valve is in the second valve position, the first valve port of the pilot valve is connected with the second valve port of the pilot valve, the pilot valve The 3rd valve port connected with the 4th valve port of the pilot valve, the valve element be in the second valve position；
Wherein, the pressure intraoral less than the high pressure valve of the pressure in the low pressure line.
Preferably, when the magnet coil is in power failure state, the pilot valve is in the first valve position.
Preferably, the 3rd valve port of the pilot valve is connected with the described first work valve port.
Preferably, the valve element is baffle arrangement.
Preferably, above-mentioned air-conditioning system also includes：The second throttling device of the outdoor heat exchanger branch road is serially connected with, it is described Second throttling device and the first throttle device are respectively arranged on the two ends of the outdoor heat exchanger.
Preferably, the outdoor heat exchanger is vertically sequentially distributed.
Preferably, above-mentioned air-conditioning system also includes being used for water receiving and aiding in drip tray derived from water, the auxiliary water receiving Disk is located between two vertically adjacent outdoor heat exchangers.
Preferably, it is described auxiliary drip tray be obliquely installed relative to horizontal direction, and it is described auxiliary drip tray it is relatively low one End is provided with osculum.
Preferably, the two ends of the auxiliary drip tray are below the middle part of the auxiliary drip tray, and the auxiliary water receiving The two ends of disk are equipped with osculum.
Preferably, the reversing arrangement of the air-conditioning system is four-way valve.
Preferably, the reversing arrangement of the air-conditioning system includes the second reversal valve and the 3rd reversal valve, second commutation First valve port of valve is connected with exhaust outlet of compressor, and the first valve port of the 3rd reversal valve is connected with compressor air suction mouthful, institute Second valve port of the second valve port and second reversal valve of stating the 3rd reversal valve is connected with the indoor heat exchanger, and described 3rd valve port of three reversal valves and the 3rd valve port of second reversal valve are connected with the outdoor heat exchanger branch road.
The defrost principle of the air-conditioning system that the present invention is provided：In defrost, the first reversal valve is adjusted so that treat the room of defrost External heat exchanger branch road is in parallel with indoor heat exchanger, then enter the outdoor heat exchange for treating defrost from the HTHP refrigerant of compressor discharge Device, realizes defrost；The other outdoor heat exchanger branch roads of control are connected with indoor heat exchanger, then from the refrigerant of indoor heat exchanger discharge Enter the outdoor heat exchanger of not defrost after being throttled through first throttle device, heat absorption evaporation is carried out, to ensure heat supply.
The air-conditioning system that the present invention is provided, because the first reversal valve and outdoor heat exchanger branch road are corresponded, then being capable of profit Change the annexation (serial or parallel connection) of any one outdoor heat exchanger branch road and indoor heat exchanger with the first reversal valve, so that Heat supply when realizing defrost；Due to outdoor heat exchanger branch road it is in parallel with indoor heat exchanger when, from compressor discharge HTHP Refrigerant carries out defrost into outdoor heat exchanger, compared with the prior art, the temperature of defrost refrigerant is effectively increased, so as to improve Defrost effect.Therefore, the air-conditioning system that the present invention is provided, in defrost on the basis of heat supply, improves defrost effect.
Meanwhile, the air-conditioning system that the present invention is provided switches outdoor heat exchanger branch road with indoor heat exchange by the first reversal valve The connection status of device so that the pipeline structure of whole air-conditioning system is relatively simple, also simplify the control system of whole air-conditioning system System.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to embodiment or description of the prior art Needed for the accompanying drawing to be used be briefly described, it should be apparent that, drawings in the following description are only implementation of the invention Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to the accompanying drawing for providing Obtain other accompanying drawings.
Fig. 1 is a kind of schematic diagram of air-conditioning system provided in an embodiment of the present invention；
Fig. 2 is schematic diagram when air-conditioning system is in refrigeration mode in Fig. 1；
Fig. 3 is schematic diagram when air-conditioning system is in heating mode in Fig. 1；
Schematic diagram when Fig. 4 is an outdoor heat exchanger defrost of air-conditioning system in Fig. 1；
Schematic diagram when Fig. 5 is another outdoor heat exchanger defrost of air-conditioning system in Fig. 1；
Fig. 6 is another schematic diagram of air-conditioning system provided in an embodiment of the present invention；
Fig. 7 is schematic diagram when air-conditioning system is in refrigeration mode in Fig. 6；
Fig. 8 is schematic diagram when air-conditioning system is in heating mode in Fig. 6；
Schematic diagram when Fig. 9 is an outdoor heat exchanger defrost of air-conditioning system in Fig. 6；
Schematic diagram when Figure 10 is another outdoor heat exchanger defrost of air-conditioning system in Fig. 6；
Figure 11 is located at structural representation during first position for a kind of valve element of first reversal valve that Fig. 6 is middle air-conditioning system Figure；
Figure 12 is located at the structural representation during second place for the valve element of the first reversal valve in Figure 11；
Figure 13 is the structural representation of main valve in Figure 12；
Figure 14 is located at structural representation during first position for the valve element of another first reversal valve that Fig. 6 is middle air-conditioning system Figure；
Figure 15 is located at the structural representation during second place for the valve element of the first reversal valve in Figure 14；
Figure 16 is the structural representation of main valve in Figure 14；
Figure 17 is a kind of scheme of installation of auxiliary drip tray in air-conditioning system provided in an embodiment of the present invention；
Figure 18 is another scheme of installation of auxiliary drip tray in air-conditioning system provided in an embodiment of the present invention；
Figure 19 is another scheme of installation of auxiliary drip tray in air-conditioning system provided in an embodiment of the present invention；
Figure 20 is the structural representation of auxiliary drip tray in air-conditioning system provided in an embodiment of the present invention.
Specific embodiment
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 carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.
Air-conditioning system provided in an embodiment of the present invention includes：Reversing arrangement 2, indoor heat exchanger 9, handover module, and at least Two outdoor heat exchanger branch roads.
Wherein, reversing arrangement 2 is used to control the operational mode of air-conditioning system, for example, by the commutation of reversing arrangement 2, it is real Existing air-conditioning system is in refrigeration mode or heating mode.Indoor heat exchanger 9 is connected with reversing arrangement 2；Outdoor heat exchanger branch road Including the outdoor heat exchanger 7 and first throttle device 8 connected, first throttle device 8 is connected with indoor heat exchanger 9.
Above-mentioned handover module includes：Corresponded with outdoor heat exchanger branch road, and change outdoor heat exchanger branch road and interior The first reversal valve 11 that hot device 9 is switched between series connection and parallel connection.
Specifically, the number of the first reversal valve 11 is identical with the number of outdoor heat exchanger branch road, it is to be understood that any Two the first reversal valves 11 are relatively independent, i.e., the valve position residing for each first reversal valve 11 is independent of each other.
The defrost principle of air-conditioning system provided in an embodiment of the present invention：In defrost, the first reversal valve 11 is adjusted so that treat Outdoor heat exchanger branch road where the outdoor heat exchanger 7 of defrost is in parallel with indoor heat exchanger 9, then from the high temperature of the discharge of compressor 1 High pressure refrigerant enters the outdoor heat exchanger 7 for treating defrost, realizes defrost；The other outdoor heat exchanger branch roads of control and indoor heat exchanger 9 series connection, then enter the outdoor heat exchanger 7 of not defrost after being throttled through first throttle device 8 from the refrigerant of the discharge of indoor heat exchanger 9, Heat absorption evaporation is carried out, to ensure heat supply.
Air-conditioning system provided in an embodiment of the present invention, because the first reversal valve 11 and outdoor heat exchanger branch road are corresponded, Then can using the first reversal valve 11 change any one outdoor heat exchanger branch road be connected with the annexation of indoor heat exchanger 9 or Parallel connection, it is achieved thereby that heat supply during defrost；Due to outdoor heat exchanger branch road it is in parallel with indoor heat exchanger 9 when, discharged from compressor 1 HTHP refrigerant carry out defrost into outdoor heat exchanger 7, compared with the prior art, effectively increase the temperature of defrost refrigerant Degree, so as to improve defrost effect.Therefore, air-conditioning system provided in an embodiment of the present invention, in defrost on the basis of heat supply, carries Defrost effect high.
Meanwhile, air-conditioning system provided in an embodiment of the present invention, by the first reversal valve 11 switch outdoor heat exchanger branch road and The connection status of indoor heat exchanger 9 so that the pipeline structure of whole air-conditioning system is relatively simple, also simplify whole air-conditioning system Control system.
In actual application, under the operational mode of air-conditioning system, at least one outdoor heat exchanger 7 and indoor heat exchange Device 9 is connected.
For the ease of switching, above-mentioned handover module also includes：It is in parallel with indoor heat exchanger 9 for making outdoor heat exchanger branch road Parallel pipeline 3, for the series pipe 4 for making outdoor heat exchanger branch road be connected with indoor heat exchanger 9.
Above-mentioned first reversal valve 11 by switch the connection of parallel pipeline 3 and series pipe 4 and outdoor heat exchanger branch road with The connection status of switching outdoor heat exchanger branch road and indoor heat exchanger 9.Herein, outdoor heat exchanger branch road and indoor heat exchanger 9 Connection status, refer to outdoor heat exchanger branch road and indoor heat exchanger 9 is in parallel and outdoor heat exchanger branch road and indoor heat exchanger 9 Series connection.
It is understood that parallel pipeline 3 and series pipe 4 are respectively positioned on one end of outdoor heat exchanger 7, first throttle device 8 other ends for being located outside heat exchanger 7.
In above-mentioned air-conditioning system, for parallel pipeline 3 and the number and the two and outdoor heat exchanger branch road of series pipe 4 Corresponding relation, can be designed according to actual needs.For example, parallel pipeline 3 and series pipe 4 with outdoor heat exchanger branch road Correspond；Or, parallel pipeline 3 and series pipe 4 be one or other.
Above-mentioned air-conditioning system, can realize being heated during defrost.Specifically, at least one outdoor heat exchanger branch road is changed with interior Hot device 9 is in parallel, and at least one outdoor heat exchanger branch road is connected with indoor heat exchanger 9.For the ease of control, outside prioritizing selection room Heat exchanger branch road replaces with indoor heat exchanger 9 in parallel and serial.Certainly, in actual application, also dependent on being actually needed All of outdoor heat exchanger 7 is selected while carrying out defrost, is not limited only to be heated during defrost.
For different territory of uses, different outdoor environments, required defrost time etc. all has differences.In order to reach To the demand of user, above-mentioned air-conditioning system meet continuous heating, defrost it is non-stop-machine it is also possible to realize existing air-conditioning White function, i.e. reversing arrangement 2 commutate, and realize that air-conditioning system is run in a chiller mode, quick defrost.
In above-mentioned air-conditioning system, for the concrete structure of the first reversal valve 11, selected according to actual needs.In order to just In control, above-mentioned first reversal valve 11 is two-position three-way valve, as Figure 1-5.
Above-mentioned two-position three-way valve turns on parallel pipeline 3 and outdoor heat exchanger branch road, i.e. outdoor heat exchange when being in the first valve position Device branch road and indoor heat exchanger 9 are in parallel；Two-position three-way valve turns on series pipe 4 and outdoor heat exchanger branch when being in the second valve position Road, i.e. outdoor heat exchanger branch road and indoor heat exchanger 9 are connected.
Specifically, parallel pipeline 3 is connected with the first valve port of two-position three-way valve, series pipe 4 and the second of triple valve 11 Valve port is connected, and outdoor heat exchanger branch road is connected with the 3rd valve port of two-position three-way valve.When two-position three-way valve is in the first valve position, First valve port of two-position three-way valve is connected with the 3rd valve port of two-position three-way valve；When two-position three-way valve is in the second valve position, two Second valve port of position three-way valve is connected with the 3rd valve port of two-position three-way valve.
As Figure 1-5, the first valve port of two-position three-way valve, as the valve port H of two-position three-way valve；The of two-position three-way valve The valve port L of two valve ports, as two-position three-way valve；The valve port G of the 3rd valve port of two-position three-way valve, as two-position three-way valve.
As Figure 1-5, outdoor heat exchanger branch road is two, correspondingly, outdoor heat exchanger 7, handover module, first throttle Device 8, two-position three-way valve is two.Certainly, it is more than three outdoor heat exchanger branch road also to may be selected, it is not limited to two It is individual.
As shown in Fig. 2 when above-mentioned air-conditioning system is in refrigeration mode, reversing arrangement 2 is in refrigeration valve position, and air-conditioning system is just Often operation, realizes the refrigeration to indoor environment.
As shown in figure 3, when above-mentioned air-conditioning system is in heating mode, reversing arrangement 2 is in and heats valve position, indoor heat exchanger 9 serve as the role of condenser to indoor heat release, and outdoor heat exchanger 7 serves as the role of evaporator, and realization is heated to indoor environment. In air-conditioning system heating process, valve port L and valve port the G end of two two-position three-way valves is connected, valve port H end seals are closed, and is realized empty Adjust the normal operation of device.With the reduction of the temperature of outdoor heat exchanger 7, the frosting of outdoor heat exchanger 7, when its Guan Wen reaches defrost temperature During angle value, two-bit triplet valve events are controlled, defrost separately or concurrently is carried out to two outdoor heat exchangers 7.It is specifically controlled to：
As shown in figure 4, when individually the outdoor heat exchanger 7 on right side carries out defrost, air-conditioning system is in heating mode, remain left The state that valve port L and valve port the G conducting of the two-position three-way valve of side, valve port H end seals are closed, the two-position three-way valve on the right side of control enters action Make, close valve port H and valve port the G conducting of the two-position three-way valve on right side, valve port L end seals.Now, the outdoor heat exchanger 7 in left side is made For the role of evaporator maintains the operation of air-conditioning system heating condition, and the outdoor heat exchanger 7 on right side is with indoor heat exchanger 9 simultaneously Connection, serves as the role of condenser, and the refrigerant temperature into the outdoor heat exchanger 7 on right side is higher, completes defrosting operation.
As shown in figure 5, when individually the outdoor heat exchanger 7 to left side carries out defrost, air-conditioning system is in heating mode, maintain The state that valve port L and valve port the G conducting of the two-position three-way valve on right side, valve port H end seals are closed, the two-position three-way valve on the left of control is carried out Action, the valve port H ends and the conducting of valve port G ends, valve port L end seals for making the two-position three-way valve in left side is closed.Now, the outdoor heat exchange on right side Device 7 maintains the operation of air-conditioning system heating condition, and the outdoor heat exchanger 7 in left side and indoor heat exchanger as the role of evaporator 9 is in parallel, serves as the role of condenser, and the refrigerant temperature into the outdoor heat exchanger 7 in left side is higher, completes defrosting operation.
For the ease of installing, above-mentioned parallel pipeline 3 is connected with the pipeline for being connected reversing arrangement 2 and indoor heat exchanger 9, or simultaneously Union road 3 is connected with the pipeline for being connected exhaust outlet of compressor and reversing arrangement 2.
As shown in figure 1, the pipeline of connection reversing arrangement 2 and indoor heat exchanger 9 is the first connecting tube 5, compressor is connected The pipeline of exhaust outlet and reversing arrangement 2 is the second connecting tube 6.
Certainly, valve port of the parallel pipeline 3 directly with reversing arrangement 2 also may be selected to be connected, it is not limited to above-described embodiment.
In above-mentioned air-conditioning system, the first reversal valve 11 can be also other structures, be not limited only to above-described embodiment and carry And handover module structure.In above-mentioned air-conditioning system, the structure of the first reversal valve of any two 11 can be identical, also can be different. In actual application, selected as needed, the embodiment of the present invention is not limited this.
Preferably, the first reversal valve 11 includes main valve 13 and control assembly, as illustrated in figures 11-16.
Above-mentioned main valve 13 includes valve body 16 and the valve element 17 in valve body 16.Above-mentioned valve element 17 is tightly connected with valve body 16 And the inner chamber of valve body 16 is divided into high pressure chest and working chamber.
Above-mentioned valve body 16 has the high pressure valve port and at least two work valve ports isolated with high pressure chest connected with high pressure chest, High pressure valve port be connected the reversing arrangement 2 of air-conditioning system and the pipeline connection of exhaust outlet of compressor.It is understood that high pressure chest For storing high pressure refrigerant, high pressure chest is mutually isolated with working chamber, i.e., high pressure chest is not connected with working chamber；Any one work Make valve port to isolate with high pressure chest.
Above-mentioned control assembly control valve element 17 is moved to change the connected state of work valve port, and plugging structure is used to block not The work valve port connected with conducting structure.
It should be noted that in above-mentioned first reversal valve 11, when main valve 13 is in its any valve position, the refrigerant in working chamber Pressure to valve element 17 is less than pressure of the refrigerant in high pressure chest to valve element 17, to ensure the sealed reliable of valve element 17 and valve body 16 Property.
The operation principle of above-mentioned first reversal valve 11 is：When needing commutation, control assembly control valve element 17 is moved, and works as valve element 17 when moving to setting position, changes the work valve port of connection, realizes commutation.
Above-mentioned first reversal valve 11 is provided with high pressure chest and the high pressure valve port connected with high pressure chest, the high pressure valve port be connected sky The reversing arrangement 2 and the pipeline connection of exhaust outlet of compressor of adjusting system, the then high pressure refrigerant that compressor is discharged enter high pressure chest, high High pressure refrigerant in pressure chamber can apply active force, and the active force towards working chamber to valve element 17 so that valve element 17 and valve body The inwall of 16 working chamber side is brought into close contact, and effectively increases sealing reliability.
For the ease of changing the connected state of work valve port, above-mentioned valve element 17 has the conducting structure being respectively positioned in working chamber And plugging structure, control assembly control valve element 17 move so that the connected state of conducting structure change work valve port, plugging structure For blocking the work valve port not connected with conducting structure.
It is understood that valve element 17 is moved, then conducting structure is also moved therewith, and conducting structure position is different, leads The work valve port of logical fabric connectivity is different, therefore, the motion of valve element 17 can make the connected state of conducting structure change work valve port, Change the valve position of main valve 1, that is, change the valve position of the first reversal valve 11.
Above-mentioned plugging structure can be to block chamber, or plugging plate, for the ease of closure work valve port, prioritizing selection closure Structure is closure chamber.
Above-mentioned conducting structure can be conduction pipe, or turn on chamber.Flow and be easy to manufacture for the ease of refrigerant, The above-mentioned conducting structure of prioritizing selection is conducting chamber.
As figs 11-13, valve element 17 includes：The side plate that two ends are tightly connected with valve body 16, is tightly connected with side plate Dividing plate；
Wherein, dividing plate includes：Main dividing plate and the secondary dividing plate being connected with main bulkhead seal, side plate and main dividing plate form high pressure Chamber, main dividing plate and secondary dividing plate form conducting structure, and side plate, main dividing plate and secondary dividing plate form plugging structure.Now, plugging structure can It is closure chamber, conducting structure is conducting chamber.
As illustrated in figures 14-16, valve element 17 includes：The dividing plate being tightly connected with valve body 16, two ends respectively with dividing plate and valve The side plate that body 16 is tightly connected；
Wherein, dividing plate includes the first demarcation strip and the second demarcation strip, and side plate and the first demarcation strip form high pressure chest, high pressure chest With the second demarcation strip respectively positioned at the both sides of first demarcation strip, side plate, the first demarcation strip and the second demarcation strip form conducting Structure, the second demarcation strip has connectivity slot, and the connectivity slot forms conducting structure.
When valve element 17 is in its first valve position, as shown in figure 14, conducting structure does not play conducting effect, and connectivity slot is Conducting structure, side plate is plugging structure；When valve element 17 is in its second valve position, as shown in figure 15, the second demarcation strip is closure Structure, conducting structure serves conducting effect.In said structure, plugging structure is plugging plate, and conducting structure and connectivity slot replace Serve conducting effect.
For conducting structure and the number of plugging structure, it is designed according to actual needs.For example, work valve port is three Individual, conducting structure is one, and plugging structure is two, and along the direction of motion of valve element 17, two plugging structures point Cloth is located at the both sides of conducting structure.
In above-mentioned first reversal valve 11, the rotatable movement of valve element 17 also may move, for the ease of realizing switching, it is ensured that change To above-mentioned valve element 17 moves along a straight line, and specifically, control assembly control valve element 17 moves along a straight line.
Preferably, work valve port is three, the respectively first work valve port, the second work valve port and the 3rd work valve port.
In above-mentioned first reversal valve 11, when valve element 17 is in the first valve position, as shown in Figure 11, Figure 13, Figure 14 and Figure 16, First work valve port and the second work valve port are connected by conducting structure, and the 3rd work valve port is closed by plugging structure, main valve 13 Conducting series pipe 4 is connected with outdoor heat exchanger branch road, i.e. outdoor heat exchanger branch road and indoor heat exchanger 9；When valve element 17 is in During the second valve position, as shown in Figure 12 and Figure 15, the second work valve port is connected with the 3rd work valve port by conducting structure, the first work Make valve port to be closed by plugging structure, main valve 13 turns on parallel pipeline 3 and outdoor heat exchanger branch road, i.e. outdoor heat exchanger branch road and room Interior heat exchanger 9 is in parallel.
First work valve port of above-mentioned valve body 16 is connected with series pipe 4, and the second work valve port of valve body 16 is changed with outdoor Hot device branch road connection, the 3rd work valve port of valve body 16 is connected with parallel pipeline 3.
As illustrated in figures 11-16, the high pressure valve port of valve body 16 is valve port a, and the first work valve port of valve body 16 is valve port B, the second work valve port of valve body 16 is valve port c, and the 3rd work valve port of valve body 16 is valve port d.
In air-conditioning system refrigeration and heating operations, the valve port b of the first reversal valve 11 is connected with valve port c.In refrigeration mode, Valve port b and valve port c is high pressure valve port, and valve port d is low pressure off-state, and valve port a maintains high pressure conditions all the time so that valve port High pressure is more than bottom high-pressure to the pressure of valve element 17 with low pressure to the pressure of valve element 17 at a, realizes that valve element 17 is reliably sealed, and prevents The generation collaborated is stopped.In heating mode, valve port b and valve port c is low pressure valve port, and valve port d is high pressure off-state, and valve port A maintains high pressure conditions all the time so that high pressure is more than the pressure of bottom high-pressure and low pressure to valve element 17 to the pressure of valve element 17 at valve port a Power so that valve element 17 is brought into close contact with the inwall of the working chamber side of valve body 16, improves sealing reliability.
Connected for the ease of pipeline, the pipeline of above-mentioned connection exhaust outlet of compressor and reversing arrangement 2 passes through the 3rd connecting tube 12 are connected with the high pressure valve port of valve body 16, as shown in Figure 6.In order to simplify pipeline, all of 3rd connecting tube 12 may be selected and passes through Many siphunculus are connected with the second connecting tube 6.Many siphunculus are three-way pipe or four-way pipe etc..
It is understood that the pipeline of connection exhaust outlet of compressor and reversing arrangement 2 is the second connecting tube 6.
The controllable valve element 17 of above-mentioned control assembly is rotated, and also be can control valve element 17 and is moved.For the ease of control, above-mentioned control Component controls valve element 17 along rectilinear movement.Specifically, control assembly control valve element 17 is moved horizontally.When valve element 17 is in first When putting, valve position is if desired changed, then need to drive valve element 17 to move right；When valve element 17 is in the second place, if desired more Valve position is changed, then needs to drive valve element 17 to be moved to the left.
Above-mentioned control assembly is selected according to actual needs, and such as control assembly is magnet coil 15 or electrichydraulic control Component.In order to ensure the stability of the first reversal valve 11, the above-mentioned control assembly of prioritizing selection is electrichydraulic control component, specifically, The control assembly includes pilot valve 14 and magnet coil 15.
It is understood that the control pilot valve 14 of magnet coil 15 changes valve position changes valve position, i.e. guide with control bound 1 When valve 14 replaces, main valve 1 replaces.
In above-mentioned first reversal valve 11, by control magnet coil 15 dead electricity controls the pilot valve 14 to commutate so that Control bound 1 commutates.So, dead electricity is obtained by controlling magnet coil 15, you can the first reversal valve 11 of control commutates, and facilitates control System, simplifies control system.
Specifically, when magnet coil 15 may be selected in power failure state, pilot valve 14 is in the first valve position；Or, electromagnetic wire Circle 15 in electricity condition when, pilot valve 14 be in the first valve position.
As shown in Figure 11, Figure 12, Figure 14 and Figure 15, pilot valve 14 has the first valve port, the second valve port, the 3rd valve port and the Four valve ports, the first valve port of pilot valve 14 is valve port e, and the second valve port of pilot valve 14 is valve port f, the 3rd of pilot valve 14 the Valve port is valve port g, and the 4th valve port of pilot valve 14 is valve port h.
First valve port of pilot valve 14 is connected with high pressure valve port, the guide in the case where magnet coil 15 obtains electric and/or power failure state 3rd valve port of valve 14 is connected with the low pressure line of air-conditioning system, the second valve port of pilot valve 14 and the 4th valve port of pilot valve 14 Connected with two driving chambers of valve body 16 respectively, two driving chambers are respectively positioned at the both sides of valve element 17.Wherein, in low pressure line The pressure pressure intraoral less than high pressure valve.
When above-mentioned pilot valve 14 is in the first valve position, as shown in Figure 11 and Figure 14, the first valve port of pilot valve 14 and guide The 4th valve port connection of valve 14, the second valve port of pilot valve 14 is connected with the 3rd valve port of pilot valve 14, and valve element 17 is in first Valve position, outdoor heat exchanger branch road and indoor heat exchanger 9 are connected；When pilot valve 2 is in the second valve position, as shown in Figure 12 and Figure 15, First valve port of pilot valve 14 is connected with the second valve port of pilot valve 14, the 3rd valve port of pilot valve 14 and the 4th of pilot valve 14 the Valve port is connected, and valve element 17 is in the second valve position, and outdoor heat exchanger branch road and indoor heat exchanger 9 are in parallel.
In above-mentioned first reversal valve 11, the 3rd valve port of pilot valve 14 in the case where magnet coil 15 obtains electric and/or power failure state For being connected with low pressure line, specifically, in the case where magnet coil 15 obtains electricity condition, the 3rd valve port of pilot valve 14 is used for and low pressure Pipeline connection, with ensure magnet coil 15 it is electric after, pilot valve 14 drive main valve 13 commutate, it is ensured that the first reversal valve 11 is normal Work；Or, the 3rd valve port of pilot valve 14 is used to be connected with low pressure line under the power failure state of magnet coil 15, to ensure electromagnetism After the dead electricity of coil 15, pilot valve 14 drives main valve 13 to commutate, it is ensured that the normal work of the first reversal valve 11；Or, in magnet coil 15 under electric and power failure state the 3rd valve port of pilot valve 14 be used to connect with low pressure line, with ensure magnet coil 15 must it is electric and After dead electricity, pilot valve 14 can drive main valve 13 to commutate, it is ensured that the normal work of the first reversal valve 11.
In above-mentioned first reversal valve 11, when the pressure in two driving chambers is identical, the stop motion of valve element 17；When two drives When pressure in dynamic chamber is different, valve element 17 is moved to the less driving chamber of pressure.It is understood that after pilot valve 14 commutates, Pressure in two driving chambers can change.
For the size and shape of driving chamber, it is designed according to actual needs.In order to improve the stress balance of valve element 17 Property, the lifting surface area of valve element 17 is increased as much as possible.
Certainly, it is other structures pilot valve 14 also to may be selected, it is not limited to above-described embodiment.
In order to simplify installation, in above-mentioned first reversal valve 11, the 3rd valve port of pilot valve 14 is connected with the first work valve port. It is understood that the first work valve port of above-mentioned valve body 16 is connected with series pipe 4.Now, magnet coil 15 it is electric or The 3rd valve port of pilot valve 14 is used to be connected with low pressure line under power failure state.
Specifically, the 3rd valve port is connected with the first work valve port, and the first work valve port is connected with low pressure line, then in reality In installation process, it is only necessary to connect the first work valve port and low pressure line, without in connection the 3rd valve port and low pressure line, letter Installation is changed and has used.
In actual application, in order to save electric energy, when prioritizing selection magnet coil 15 is in power failure state, pilot valve 14 in the first valve position, and now, valve element 17 is in the first valve position, and indoor heat exchanger 9 is connected with outdoor heat exchanger branch road, and in electricity Magnetic coil 15 under electricity condition the 3rd valve port of pilot valve 14 connected with low pressure line.So, air-conditioning system is in heating mode Or refrigeration mode, i.e. air-conditioning system in normal operation magnet coil 15 be in off-position, i.e., only in air-conditioning system Magnet coil 15 is powered during defrost, effectively saves electric energy, reduces use cost, also improves security reliability；Meanwhile, valve Gate control is also relatively simple, when defrost is needed only to electricity on the corresponding valve of outdoor heat exchanger 7 for needing defrost.
Certainly, when magnet coil 15 also may be selected in power failure state, pilot valve 14 is in the second valve position, now, valve element 17 in the second valve position, indoor heat exchanger 9 and outdoor heat exchanger branch circuit parallel connection.
For the concrete structure of valve element 17, it is designed according to actual needs, such as valve element 17 is baffle arrangement or post Body structure.For the ease of realizing above-mentioned functions, above-mentioned valve element 17 is baffle arrangement.For the concrete structure and shape of baffle arrangement Shape, the embodiment of the present invention is not limited this.
Further, above-mentioned baffle arrangement includes：The side plate that two ends are tightly connected with valve body 16, is tightly connected with side plate Dividing plate；Wherein, side plate and dividing plate form high pressure chest, and high pressure chest and work valve port respectively positioned at the both sides of dividing plate.
In above-mentioned first reversal valve 11, high pressure chest and work valve port respectively positioned at dividing plate both sides, strengthen valve element 17 with Being tightly connected for the work valve port side of valve body 16, further increases sealing property.
In above-mentioned first reversal valve 11, the homonymy that some work valve ports are located at dividing plate with high pressure chest also may be selected, not office It is limited to above-described embodiment.
Certainly, above-mentioned baffle arrangement can also be other structures, and one end and the valve body 16 of such as side plate are tightly connected, side plate The other end is connected with bulkhead seal, and dividing plate is tightly connected away from one end of side plate with valve body 16, and now, side plate and dividing plate form height Pressure chamber, and high pressure chest and work valve port are respectively positioned at the both sides of dividing plate.Therefore, above-mentioned baffle arrangement is not limited to above-mentioned implementation Example.
In above-mentioned air-conditioning system, due to the high pressure that the pipeline of connection exhaust outlet of compressor and reversing arrangement 2 passes through valve body 16 Valve port is connected with high pressure chest, i.e., the second connecting tube 6 is connected with high pressure chest, then prioritizing selection parallel pipeline 3 be connected reversing arrangement 2 Pipeline with indoor heat exchanger 9 is connected, and parallel pipeline 3 is connected with the first connecting tube 5.
Certainly, parallel pipeline 3 also may be selected to be connected with the valve port of reversing arrangement 2, it is not limited to above-described embodiment.
In above-mentioned first reversal valve 11, the rotatable movement of valve element 17 also may move, for the ease of realizing switching, it is ensured that change To above-mentioned valve element 17 moves along a straight line, and specifically, control assembly control valve element 17 moves along a straight line.
Above-mentioned air-conditioning system is using after above-mentioned first reversal valve 11, and concrete structure is as shown in Figure 6.
In cooling mode, the valve port b of the first reversal valve 11 is connected above-mentioned air-conditioning system with valve port c, above-mentioned air-conditioning system Middle indoor heat exchanger 9 absorbs heat, and realizes the refrigeration to indoor environment, as shown in Figure 7.
In a heating mode, the valve port b of the first reversal valve 11 is connected above-mentioned air-conditioning system with valve port c, above-mentioned air-conditioning system The indoor heat release of middle indoor heat exchanger 9 pairs, realizes the heat-production functions to indoor environment, as shown in Figure 8.
In above-mentioned air-conditioning system, when individually the outdoor heat exchanger 7 to left side carries out defrost, above-mentioned air-conditioning system is heating mould Under formula, the valve port c of first reversal valve 11 in left side is connected with valve port d.Now, the outdoor heat exchanger 7 in left side and indoor heat exchanger 9 Parallel connection, realizes defrost.Meanwhile, the outdoor heat exchanger 7 on right side meets the demand of indoor heating in outdoor heat absorption, such as Fig. 9 institutes Show.
In above-mentioned air-conditioning system, when individually the outdoor heat exchanger 7 to right side carries out defrost, above-mentioned air-conditioning system is heating mould Under formula, the connection of the valve port c and valve port d of first reversal valve 11 on right side.Now, the outdoor heat exchanger 7 on right side and indoor heat exchange Device 9 is in parallel, realizes defrost.Meanwhile, the outdoor heat exchanger 7 in left side meets the demand of indoor heating, such as Figure 10 in outdoor heat absorption It is shown.
Above-mentioned first throttle device 8 can be expansion valve, capillary or choke valve etc..For the ease of adjusting flow, preferentially Selection first throttle device 8 is expansion valve.
For the ease of regulation cold medium flux, defrost effect is adjusted according to actual conditions, above-mentioned air-conditioning system also includes：Concatenation In the second throttling device 10 of outdoor heat exchanger branch road, second throttling device 10 and first throttle device 8 are respectively arranged on outdoor and change The two ends of hot device 7.It is understood that second throttling device 10 can adjust the stream of the refrigerant for flowing through outdoor heat exchanger branch road Amount.
Above-mentioned second throttling device 10 can be expansion valve, controllable register or choke valve etc., and the embodiment of the present invention is to second The particular type of throttling arrangement 10 is not limited.
In above-mentioned air-conditioning system, after outdoor unit is installed, outdoor heat exchanger 7 can vertically be sequentially distributed, also optional Select outdoor heat exchanger 7 to be sequentially distributed in the horizontal direction, the embodiment of the present invention does not limit the distribution form of outdoor heat exchanger 7.
Install for convenience, prioritizing selection outdoor heat exchanger 7 is vertically sequentially distributed.
It should be noted that outdoor heat exchanger 7 on an outdoor heat exchanger branch road can be one, or two with On.Above-mentioned outdoor heat exchanger 7 is vertically sequentially distributed, and can refer to the edge of outdoor heat exchanger 7 on same outdoor heat exchanger branch road Vertical direction is sequentially distributed, and can also refer to that the outdoor heat exchanger 7 on different outdoor heat exchanger branch roads is vertically sequentially distributed.
Above-mentioned air-conditioning system includes at least outdoor heat exchanger 7, in defrost, the defrost of at least one outdoor heat exchanger 7, extremely A few heating operation of outdoor heat exchanger 7.Frost needs discharge in time after being melted into water, prevents it when heating mode is changed, because of water Do not discharge situations such as causing icing, influence heat exchange.
During defrost, the frost layer on outdoor heat exchanger 7 is heated and produces water to be flowed downward along fin.Outdoor heat exchanger 7 are vertically sequentially distributed, and during the defrost of outdoor heat exchanger 7 on top, water flows downward along fin, and the room of bottom External heat exchanger 7 is in and heats state, the performance of the whole machine of easy icing effect in the presence of condensed water, meanwhile, can also cause bottom The defrost time of condenser is more long, influences the comfortable sexual experience of user.Therefore, above-mentioned air-conditioning system is also included for water receiving and by water Derived auxiliary drip tray 18, auxiliary drip tray 18 is located between two vertically adjacent outdoor heat exchangers 7, such as schemes Shown in 17-19.
It is understood that auxiliary drip tray 18 has the groove for accommodating water.Auxiliary drip tray 18 is used to derive in water, then Auxiliary drip tray 18 has to be used for discharge structure derived from water, and the discharge structure is osculum, discharge outlet or drainpipe.
Using said structure, the condensed water produced during by 7 defrost of outdoor heat exchanger on top is directly derived without under the influence of The outdoor heat exchanger 7 in portion is heated and defrost.
For the ease of draining, auxiliary drip tray 18 is obliquely installed relative to horizontal direction, and auxiliary drip tray 18 is relatively low One end is provided with osculum 20, as shown in Figure 18 and Figure 19.
For the incline direction for aiding in drip tray 18, it is designed according to actual needs.Specifically, above-mentioned auxiliary drip tray 18 is higher near one end of compressor 1, or above-mentioned auxiliary drip tray 18 is relatively low near one end of compressor 1.
For aiding in the angle of inclination of drip tray 18, as long as not influenceing outdoor heat exchanger 7 to work, according to actual needs It is designed, the embodiment of the present invention is not limited this.
Certainly, the two ends that auxiliary drip tray 18 also may be selected are below aiding in the middle part of drip tray 18, and auxiliary drip tray 18 two ends are equipped with osculum 20.
It is understood that the base of air-conditioner outdoor unit has bottom drip tray 19, above-mentioned osculum 20 and bottom water receiving Disk 19 is relative, in ensureing that the water for aiding in drip tray 18 to collect drains into bottom drip tray 19 from osculum 20.
For the shape for aiding in drip tray 18, it is designed according to actual needs.For the ease of collecting water, prioritizing selection is auxiliary Adjuvant grafting water pond 18 is close with the profile of outdoor heat exchanger 7, it is preferable that auxiliary drip tray 18 is L-shaped, as shown in figure 20.
It is understood that fillet can be set in the corner of auxiliary drip tray 18.
In above-mentioned air-conditioning system, generally using four-way valve as reversing arrangement 2, it is easy to control.Specifically, by control four Port valve dead electricity controls the four-way valve to commutate.
It should be noted that when four-way valve is in refrigeration valve position, can be at power-down mode, power mode is can also be in obtaining, and It is not limited to above-described embodiment.For example, when four-way valve is in refrigeration valve position, four-way valve is in obtain power mode；Four-way valve is in system During thermal valve position, four-way valve is in power-down mode.
In above-mentioned air-conditioning system, two reversal valves also may be selected as reversing arrangement 2.Specifically, reversing arrangement 2 includes the Two reversal valves and the 3rd reversal valve, the first valve port of the second reversal valve are connected with exhaust outlet of compressor, and the first of the 3rd reversal valve Valve port and compressor air suction mouthful are connected, the second valve port of the 3rd reversal valve and the second valve port of the second reversal valve with indoor heat exchange Device 9 is connected, and the 3rd valve port of the 3rd reversal valve and the 3rd valve port of the second reversal valve are connected with outdoor heat exchanger branch road.
Certainly, it is other valve members reversing arrangement 2 also to may be selected, it is not limited to above-described embodiment.
The foregoing description of the disclosed embodiments, enables those skilled in the art to realize or uses the present invention.To this Various modifications of a little embodiments will be apparent for a person skilled in the art, and generic principles defined herein can Without departing from the spirit or scope of the present invention, to realize in other embodiments.Therefore, the present invention will not be limited It is formed on the embodiments shown herein, and is to fit to consistent with principles disclosed herein and features of novelty most wide Scope.

Claims (19)

1. a kind of air-conditioning system, it is characterised in that including：Indoor heat exchanger (9), handover module and at least two outdoor heat exchangers Branch road；
Wherein, the outdoor heat exchanger branch road includes the outdoor heat exchanger (7) and first throttle device (8) of series connection, described first Throttling arrangement (8) is connected with the indoor heat exchanger (9)；
The handover module includes：Corresponded with the outdoor heat exchanger branch road, and make the outdoor heat exchanger branch road and institute State the first reversal valve (11) that indoor heat exchanger (9) is switched between series connection and parallel connection.
2. air-conditioning system according to claim 1, it is characterised in that the handover module also includes：For making the room The external heat exchanger branch road parallel pipeline (3) in parallel with the indoor heat exchanger (9), for making the outdoor heat exchanger branch road and institute State the series pipe (4) of indoor heat exchanger (9) series connection；
First reversal valve (11) is by switching the parallel pipeline (3) and the series pipe (4) and the outdoor heat exchange The connection of device branch road is switching the connection status of the outdoor heat exchanger branch road and the indoor heat exchanger (9).
3. air-conditioning system according to claim 2, it is characterised in that the parallel pipeline (3) be connected the air-conditioning system The reversing arrangement (2) of system is connected with the pipeline of the indoor heat exchanger (9), or the parallel pipeline (3) is arranged with compressor is connected Gas port is connected with the pipeline of the reversing arrangement (2).
4. air-conditioning system according to claim 1, it is characterised in that first reversal valve (11) is two-position three-way valve, The outdoor heat exchanger branch road and the indoor heat exchanger (9) are in parallel when the two-position three-way valve is in the first valve position；Described two The outdoor heat exchanger branch road and the indoor heat exchanger (9) series connection when position three-way valve is in the second valve position.
5. air-conditioning system according to claim 1, it is characterised in that first reversal valve (11) including main valve (13) and Control assembly；
Valve element (17) of the main valve (13) including valve body (16) and in the valve body (16), the valve element (17) with it is described Valve body (16) is tightly connected and the inner chamber of the valve body (16) is divided into high pressure chest and working chamber；
The valve body (16) is with the high pressure valve port connected with the high pressure chest and at least two works isolated with the high pressure chest Make valve port, the high pressure valve port be connected the reversing arrangement (2) of the air-conditioning system and the pipeline connection of exhaust outlet of compressor；
The control assembly controls valve element (17) motion to change the connected state of the work valve port.
6. air-conditioning system according to claim 5, it is characterised in that the valve element (17) is with being respectively positioned on the working chamber Interior conducting structure and plugging structure, the control assembly controls the valve element (17) to move so that the conducting structure changes institute The connected state of work valve port is stated, the plugging structure is used to block the work valve port not connected with the conducting structure.
7. air-conditioning system according to claim 6, it is characterised in that the work valve port is three, respectively the first work Make valve port, the second work valve port and the 3rd work valve port；
Wherein, when the valve element (17) is in the first valve position, the first work valve port and the second work valve port pass through Conducting structure connection, the 3rd work valve port is closed by the plugging structure, the indoor heat exchanger (9) and the room External heat exchanger branch road is connected；
When the valve element (17) is in the second valve position, the second work valve port is led with the described 3rd work valve port by described Logical fabric connectivity, the first work valve port is closed by the plugging structure, the indoor heat exchanger (9) and the outdoor heat exchange Device branch circuit parallel connection.
8. air-conditioning system according to claim 7, it is characterised in that the control assembly includes pilot valve (14) and electromagnetism Coil (15), wherein, the magnet coil (15) controls the pilot valve (14) to change valve position to control the main valve (13) more Change valve position.
9. air-conditioning system according to claim 8, it is characterised in that the pilot valve (14) is with the first valve port, second Valve port, the 3rd valve port and the 4th valve port, the first valve port of the pilot valve (14) are connected with the high pressure valve port, in the electromagnetism The 3rd valve port of the pilot valve (14) connects with the low pressure line of the air-conditioning system under coil (15) obtains electric and/or power failure state It is logical, the second valve port of the pilot valve (14) and the 4th valve port of the pilot valve (14) respectively with two of the valve body (16) Driving chamber is connected, and two driving chambers are respectively positioned at the both sides of the valve element (17)；
When the pilot valve (14) is in the first valve position, the of the first valve port of the pilot valve (14) and the pilot valve (14) Four valve ports are connected, and the second valve port of the pilot valve (14) is connected with the 3rd valve port of the pilot valve (14), the valve element (17) in the first valve position；The pilot valve (14) in the second valve position when, the first valve port of the pilot valve (14) with it is described The second valve port connection of pilot valve (14), the 3rd valve port of the pilot valve (14) connects with the 4th valve port of the pilot valve (14) Logical, the valve element (17) is in the second valve position；
Wherein, the pressure intraoral less than the high pressure valve of the pressure in the low pressure line.
10. air-conditioning system according to claim 9, it is characterised in that when the magnet coil (15) is in power failure state, The pilot valve (14) is in the first valve position.
11. air-conditioning systems according to claim 9, it is characterised in that the 3rd valve port of the pilot valve (14) with it is described First work valve port connection.
12. air-conditioning systems according to claim 5, it is characterised in that the valve element (17) is baffle arrangement.
13. air-conditioning systems according to claim 1, it is characterised in that also include：It is serially connected with the outdoor heat exchanger branch road Second throttling device (10), the second throttling device (10) and the first throttle device (8) are respectively arranged on the outdoor The two ends of heat exchanger (7).
14. air-conditioning systems according to claim 1, it is characterised in that the outdoor heat exchanger (7) is vertically successively Distribution.
15. air-conditioning systems according to claim 14, it is characterised in that also including for water receiving and will derived from water aid in Drip tray (18), auxiliary drip tray (18) is between two vertically adjacent outdoor heat exchangers (7).
16. air-conditioning systems according to claim 15, it is characterised in that the auxiliary drip tray (18) is relative to level side To being obliquely installed, and the relatively low one end of auxiliary drip tray (18) is provided with osculum (20).
17. air-conditioning systems according to claim 15, it is characterised in that the two ends of the auxiliary drip tray (18) are below The middle part of auxiliary drip tray (18), and the two ends of auxiliary drip tray (18) are equipped with osculum (20).
18. air-conditioning system according to any one in claim 1-17, it is characterised in that the commutation of the air-conditioning system Device (2) is four-way valve.
19. air-conditioning system according to any one in claim 1-17, it is characterised in that the commutation of the air-conditioning system Device (2) includes the second reversal valve and the 3rd reversal valve, and the first valve port of second reversal valve is connected with exhaust outlet of compressor, First valve port of the 3rd reversal valve is connected with compressor air suction mouthful, second valve port and described second of the 3rd reversal valve Second valve port of reversal valve is connected with the indoor heat exchanger (9), the 3rd valve port and described second of the 3rd reversal valve 3rd valve port of reversal valve is connected with the outdoor heat exchanger branch road.
CN201710171065.6A 2017-03-21 2017-03-21 Air conditioning system Active CN106766417B (en)

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CN108151351A (en) * 2017-12-30 2018-06-12 广东申菱环境系统股份有限公司 A kind of integrated water cooling and the Multifucntional outdoor unit of air-cooled heat exchange
CN110081633A (en) * 2019-04-22 2019-08-02 合肥荣事达太阳能有限公司 A kind of trigeneration heat pump system
CN110207278A (en) * 2019-05-28 2019-09-06 珠海格力电器股份有限公司 The control method of air conditioner and air conditioner
CN110411048A (en) * 2018-04-26 2019-11-05 北京四季通能源科技有限公司 A kind of multi-evaporator heat pump and its control method from defrost continuous heat supply
CN110926071A (en) * 2019-11-08 2020-03-27 广东芬尼克兹节能设备有限公司 Intelligent defrosting control method and system for heat pump system
CN111306822A (en) * 2020-03-31 2020-06-19 长虹美菱股份有限公司 Refrigeration system with icing evaporator and control method
CN111412696A (en) * 2020-04-09 2020-07-14 珠海格力电器股份有限公司 Multifunctional integrated air conditioner
CN111503912A (en) * 2020-05-14 2020-08-07 珠海格力电器股份有限公司 Heat pump water unit and control method thereof
CN111649500A (en) * 2020-06-17 2020-09-11 南京天加环境科技有限公司 Air conditioning system capable of continuously heating

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CN108151351A (en) * 2017-12-30 2018-06-12 广东申菱环境系统股份有限公司 A kind of integrated water cooling and the Multifucntional outdoor unit of air-cooled heat exchange
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CN110081633A (en) * 2019-04-22 2019-08-02 合肥荣事达太阳能有限公司 A kind of trigeneration heat pump system
CN110207278A (en) * 2019-05-28 2019-09-06 珠海格力电器股份有限公司 The control method of air conditioner and air conditioner
CN110926071A (en) * 2019-11-08 2020-03-27 广东芬尼克兹节能设备有限公司 Intelligent defrosting control method and system for heat pump system
CN111306822A (en) * 2020-03-31 2020-06-19 长虹美菱股份有限公司 Refrigeration system with icing evaporator and control method
CN111306822B (en) * 2020-03-31 2023-12-15 长虹美菱股份有限公司 Refrigerating system with iced evaporator and control method
CN111412696A (en) * 2020-04-09 2020-07-14 珠海格力电器股份有限公司 Multifunctional integrated air conditioner
CN111503912A (en) * 2020-05-14 2020-08-07 珠海格力电器股份有限公司 Heat pump water unit and control method thereof
CN111649500A (en) * 2020-06-17 2020-09-11 南京天加环境科技有限公司 Air conditioning system capable of continuously heating

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