CN106839493A - A kind of air-conditioning system and its defrosting control method - Google Patents
A kind of air-conditioning system and its defrosting control method Download PDFInfo
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- CN106839493A CN106839493A CN201611047333.5A CN201611047333A CN106839493A CN 106839493 A CN106839493 A CN 106839493A CN 201611047333 A CN201611047333 A CN 201611047333A CN 106839493 A CN106839493 A CN 106839493A
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- Prior art keywords
- outdoor heat
- heat exchanger
- valve
- control
- defrost
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3202—Cooling devices using evaporation, i.e. not including a compressor, e.g. involving fuel or water evaporation
-
- 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
-
- 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
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
-
- 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
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
- F25B2347/021—Alternate defrosting
-
- 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
Abstract
The present invention provides a kind of air-conditioning system and its defrosting control method, the air-conditioning system includes compressor (1), four-way valve (2), throttling arrangement (4), and indoor heat-exchange unit (6) and outdoor heat exchange unit (3), the outdoor heat exchange unit (3) includes more than two outdoor heat exchangers, the entrance point and the port of export of each outdoor heat exchanger are provided with control valve group part, while can be used in controlling the indoor heat-exchange unit to heat, needs can be heated defrost by the outdoor heat exchanger of defrost, remaining outdoor heat exchanger is used for sweat cooling.Can be when outdoor heat exchanger needs defrosting by the present invention, by control control valve group part so that compressor air-discharging end high-temperature high-pressure refrigerant except flow through it is indoor for heating in addition to, additionally flow through the outdoor heat exchanger for needing defrost, so that can continue to keep the effect of indoor heating during defrost simultaneously, indoor (preferably in-car) temperature is not declined, do not interfere with the comfortableness of indoor environment.
Description
Technical field
The invention belongs to air-conditioning technical field, and in particular to a kind of air-conditioning system and its defrosting control method.
Background technology
Tradition car drives engine to provide driving force using gasoline, natural gas and diesel oil etc. as fuel at present.Tradition
The power of coach air conditioner is also from the driving force of engine output, and (or half seal to drive open-type by the effect of clutch
Enclosed) compressor of air conditioner work, to realize the refrigeration of summer.In addition, traditional car is cold using automobile engine in the winter time
But water is thermal source, to providing Hot-blast Heating in compartment, realizes the heat supply of winter air-conditioning system.
Because electric motor coach the inside can utilize without the waste heat that engine is produced, so the system of air conditioner for electric motor coach system
Heat is a problem, and current industry the inside mostly solves the problem, the energy of heat pump with heat pump techniques and PTC electric heater units
Effect is far above PTC electrical heating, more economical using heat pump.When environment temperature is higher, heat pump is mainly used；And in environment temperature
In the case of relatively low, the evaporating temperature of heat pump is relatively low, the easy frosting of heat exchanger surface, when frost layer is thickened, heat exchanger heat exchange
Deteriorate, and increased air flow resistance so that unit heating capacity is reduced, and unit can be out of service when serious, so heat pump is needed
Frequently to defrost, and defrosting can cause vehicle interior temperature to fluctuate, and the comfortableness of seating be reduced, so the master when environment temperature is relatively low
To use PTC electrical heating.
Therefore, improve evaporation side defrosting and delay frosting technology be improve pump type heat automobile air conditioning system system in low temperature environment
One of effective way of lower heating performance and the stability of a system.Conventional Defrost mode is mainly reverse cycle defrosting at present.It is inverse to follow
Ring defrosting is to commutate to make refrigerant along loop reverse flow by four-way valve, and heat pump is converted into cooling condition from heating condition,
Heat pump is discharged to outdoor heat exchanger to melt its surface frosting from in-car heat absorption.Reverse cycle defrosting is simple and easy to apply, and defrosting effect is good,
But the impact that high-low pressure docking operation can be more serious to various parts producing ratio during defrosting, system reliability is affected.
If defrosting control system imperfection, or even can cause to defrost by mistake.And when environmental working condition is relatively low, the defrost cycle is relatively
Long, vehicle interior temperature has and is decreased obviously, and has also had a strong impact on the comfortableness of environment inside car.
Because high-low pressure docking operation when air-conditioning system of the prior art is present to defrost can be to various parts producing ratio
More serious impact, system reliability is affected；Defrosting control system imperfection, can cause the occurrence of defrosting by mistake；And
And when environmental working condition is relatively low, the defrost cycle is relatively long, vehicle interior temperature has and is decreased obviously, and has also had a strong impact on environment inside car
The technical problem such as comfortableness, therefore research and design of the present invention goes out a kind of air-conditioning system and its defrosting control method.
The content of the invention
Therefore, the technical problem to be solved in the present invention is to overcome air-conditioning system of the prior art easily to there is the defrost phase
Between vehicle interior temperature have the defect being decreased obviously, so as to provide a kind of air-conditioning system and its defrosting control method.
The present invention provides a kind of air-conditioning system, and it includes compressor, four-way valve, throttling arrangement, and indoor heat-exchange unit
With outdoor heat exchange unit, the outdoor heat exchange unit include more than two outdoor heat exchangers, each outdoor heat exchanger
Entrance point and the port of export are provided with control valve group part, while can be used in controlling the indoor heat-exchange unit to heat, needs
Defrost, remaining outdoor heat exchanger can be heated by the outdoor heat exchanger of defrost and be used for sweat cooling.
Preferably, the D ends of the four-way valve are connected with the outlet of the compressor, S ends and the pressure of the four-way valve
The entrance of contracting machine is connected, and has：
The port of export of more than two outdoor heat exchangers is connected to after mutually being converged by respective primary outlet pipeline
The C-terminal of the four-way valve, the entrance point of more than two outdoor heat exchangers is mutually converged by respective main inlet ductwork
One end of the throttling arrangement is connected to afterwards；
Or, the port of export of more than two outdoor heat exchangers is connected after mutually being converged by respective primary outlet pipeline
One end of the throttling arrangement is connected to, the entrance point of more than two outdoor heat exchangers is by respective main inlet ductwork
The C-terminal of the four-way valve is connected to after mutually converging.
Preferably, also including being connected to the fluid reservoir of the throttling arrangement other end,
Export branch road is connected with the primary outlet line branching in the port of export of each outdoor heat exchanger, and
Import branch road is connected with the main inlet ductwork branch in the entrance point of each outdoor heat exchanger, and is had：
More than two export branch roads are connected in the fluid reservoir after mutually converging, more than two import branch
Road is connected to the E ends of the four-way valve after mutually converging；Or, more than two export branch roads are connected to described after mutually converging
The E ends of four-way valve, more than two import branch roads are connected in the fluid reservoir after mutually converging.
Preferably, the control valve group part at the port of export of each outdoor heat exchanger is used to control the port of export to connect master
Export pipeline connects export branch road；
And/or, the control valve group part at the entrance point of each outdoor heat exchanger is used to control the entrance point to connect master
Inlet ductwork connects import branch road.
Preferably, the outdoor heat exchange unit includes two outdoor heat exchangers, respectively the first outdoor heat exchanger and second
Outdoor heat exchanger：
The first end of first outdoor heat exchanger passes through the first main road and the 3rd end with second outdoor heat exchanger
The 3rd connected main road is connected to the C-terminal of the four-way valve after mutually converging；
And/or, the second end of first outdoor heat exchanger by the second main road with second outdoor heat exchanger
The 4th connected main road of 4th end is connected to described one end of the throttling arrangement after mutually converging.
Preferably, the first end of first outdoor heat exchanger is connected with first with the first main road phase branch
Branch road, the 3rd end of second outdoor heat exchanger is connected with the 3rd branch road with the 3rd main road phase branch, described
Tie point is connected in the fluid reservoir after mutually converging with the 3rd branch road；
And/or, second end of first outdoor heat exchanger is connected with second with the second main road phase branch
Branch road, the 3rd end of second outdoor heat exchanger is connected with the 4th branch road with the 4th main road (14) the phase branch,
Second branch road is connected to the E ends of the four-way valve after mutually converging with the 4th branch road.
Preferably, the control valve group part includes：
It is arranged at the first triple valve of the first end of first outdoor heat exchanger, the A1 ends of first triple valve
Connect the first end, B1 ends and connect first main road, the C1 ends connection tie point；
And/or, it is arranged at second triple valve at second end of first outdoor heat exchanger, second triple valve
A2 ends connect second end, B2 ends and connect second main road, C2 ends and connect second branch road；
And/or, it is arranged at the 3rd triple valve at the 3rd end of second outdoor heat exchanger, the 3rd triple valve
A3 ends connect the 3rd end, B3 ends and connect the 3rd main road, C3 ends and connect the 3rd branch road；
And/or, it is arranged at the 4th triple valve at the 4th end of second outdoor heat exchanger, the 4th triple valve
A4 ends connect the 4th end, B4 ends and connect the 4th main road, C4 ends and connect the 4th branch road.
Preferably, the control valve group part includes：
The first on-off valve being arranged on first main road and the second on-off valve being arranged in the tie point；
And/or, the 3rd on-off valve that is arranged on second main road and the four-way being arranged on second branch road
Disconnected valve；
And/or, the 5th on-off valve being arranged on the 3rd main road leads to the 6th be arranged on the 3rd branch road
Disconnected valve；
And/or, the 7th on-off valve being arranged on the 4th main road leads to the 8th be arranged on the 4th branch road
Disconnected valve.
Preferably, the indoor heat-exchange unit includes two indoor heat exchangers, respectively the first indoor heat exchanger and second
Indoor heat exchanger；
And/or, one end of first indoor heat exchanger is connected to described after mutually converging with one end of the second indoor heat exchanger
The E ends of four-way valve, the other end of the two is connected in the fluid reservoir again after converging.
Preferably, the air-conditioning system is electric bus air-conditioning system.
The present invention also provides a kind of defrosting control method of such as foregoing air-conditioning system, wherein, when in outdoor heat exchange unit
When at least one outdoor heat exchanger needs defrost, control needs the control valve at the outdoor heat exchanger entrance point and the port of export of defrost
Component is acted, to enable that at least one outdoor heat exchanger is heated defrost.
Preferably, include first when the outdoor heat exchange unit includes two outdoor heat exchangers and the control valve group part,
When second, third is with four triple valves：
If the first outdoor heat exchanger needs defrost, the A1 ends of the first triple valve are controlled to be connected with C1 ends, control second
The A2 ends of triple valve connect with C2 ends, control the 3rd triple valve A3 ends connected with B3 ends, control the 4th triple valve A4 ends and
B4 ends connect；
If the second outdoor heat exchanger needs defrost, the A3 ends of the 3rd triple valve are controlled to be connected with C3 ends, control the 4th
The A4 ends of triple valve connect with C4 ends, control the first triple valve A1 ends connected with B1 ends, control the second triple valve A2 ends and
B2 ends connect.
Preferably, include first when the outdoor heat exchange unit includes two outdoor heat exchangers and the control valve group part,
When second, third, fourth, fifth, the six, the 7th and eight on-off valves：
If the first outdoor heat exchanger needs defrost, the break-make of the closing of the first and the 3rd on-off valve of control, second and the 4th
Valve is opened, and the on-off valve of the 5th and the 7th on-off valve of control opening, the 6th and the 8th is closed；
If the second outdoor heat exchanger needs defrost, the break-make of the first and the 3rd on-off valve of control opening, second and the 4th
Valve is closed, and the on-off valve of the closing of the 5th and the 7th on-off valve of control, the 6th and the 8th is opened.
A kind of air-conditioning system and its defrosting control method that the present invention is provided have the advantages that：
1. air-conditioning system of the invention and its defrosting control method, can need in one or more outdoor heat exchanger
When defrosting, can be by controlling control valve group part so that the high-temperature high-pressure refrigerant at compressor air-discharging end is changed except flowing through interior
Beyond heat engine group is used to heat, additionally flows through this and need the outdoor heat exchanger of defrost, remaining does not need the outdoor heat exchanger of defrost then
For evaporation endothermic refrigeration, with from outdoor draw heat, so that can continue to keep the work of indoor heating during defrost simultaneously
With so that indoor (preferably in-car) temperature will not decline, and not interfere with indoor (preferably in-car) environmental amenity；
2. air-conditioning system of the invention and its defrosting control method, high-low pressure docking operation pair when effectively eliminating defrosting
The situation of the more serious impact of various parts producing ratio, it is ensured that the reliability of system operation；Improve the complete of defrosting control system
Kind degree, it is therefore prevented that the occurrence of defrosting by mistake；And when environmental working condition is relatively low so that the defrost cycle is unlikely to relatively
It is long.
Brief description of the drawings
Fig. 1 is the structural representation of air-conditioning system of the invention.
Reference is expressed as in figure：
1-compressor, 2-four-way valve, 3-outdoor heat exchange unit, the 301-the first outdoor heat exchanger, 3011-first end,
3012-the second end, the 302-the second outdoor heat exchanger, the 3021-the three end, the 3022-the four end, 4-throttling arrangement, 5-storage
Flow container, 6-indoor heat-exchange unit, the 601-the first indoor heat exchanger, the 602-the second indoor heat exchanger, 7-gas-liquid separator,
801-the first triple valve, the 802-the second triple valve, the 803-the three triple valve, the 804-the four triple valve, 9-outdoor fan,
10-indoor fan, the 11-the first main road, the 12-the second main road, the 13-the three main road, the 14-the four main road, 15-the first
Road, the 16-the second branch road, the 17-the three branch road, the 18-the four branch road.
Specific embodiment
Embodiment 1
As shown in figure 1, the present invention provides a kind of air-conditioning system, it includes compressor 1, four-way valve 2, throttling arrangement 4, and
Indoor heat-exchange unit 6 and outdoor heat exchange unit 3, the outdoor heat exchange unit 3 (can be including more than two outdoor heat exchangers
It is parallel with one another), the entrance point and the port of export of each outdoor heat exchanger are provided with control valve group part, can be used in controlling institute
State indoor heat-exchange unit while heat, need that by the outdoor heat exchanger of defrost defrost, remaining outdoor heat exchanger can be heated
It is used for sweat cooling (remaining outdoor heat exchanger >=1).
By more than two outdoor heat exchangers, the entrance point and the port of export of each outdoor heat exchanger are provided with control
Valve module processed, can be made when one or more outdoor heat exchanger needs defrosting by controlling control valve group part
Compressor air-discharging end high-temperature high-pressure refrigerant except flow through indoor heat-exchange unit in addition to heating, additionally flow through the needs
The outdoor heat exchanger of frost, remaining do not need defrost outdoor heat exchanger be then used for evaporation endothermic refrigeration, with from outdoor draw heat,
So that can continue to keep the effect of indoor heating during defrost simultaneously so that indoor (preferably in-car) temperature will not occur
Decline, do not interfere with indoor (preferably in-car) environmental amenity；
High-low pressure docking operation is (existing to the situation of the more serious impact of various parts producing ratio when effectively eliminating defrosting
Some defrost technologies are, by compressor shutdown, defrost program to be entered back into after high-low pressure is balanced.During this, four-way valve is changed
To.During compressor shutdown, blower fan remains in operation and blows the waste heat of heat exchanger, is started shooting again after compressor after high-low pressure balance.Otherwise can
The more serious impact of producing ratio.The present invention need not consider the factor of high-low pressure docking, therefore effectively prevent the feelings of serious impact
Condition), it is ensured that the reliability of system operation；Improve the degree of perfection of defrosting control system, it is therefore prevented that the occurrence of defrosting by mistake
(can be by setting up temperature sensor detection pipe temperature at outdoor heat exchanger so that any platform outdoor heat exchanger or condenser needs judged
Defrosted, prevent from defrosting by mistake)；And when environmental working condition is relatively low so that the defrost cycle is unlikely to relatively long (conventional type
General to use four-way valve commutation defrost, when environment temperature is relatively low, the defrost cycle is that vehicle interior temperature is to have up to more than ten minutes
It is decreased obviously, now generally requires unlatching PTC electrical heating.And four-way valve does not commutate during the machine defrost, without shutdown, effectively
Reduce the cycle of defrost).
General by four-way valve commutation defrost during pump type heat electric bus air-conditioning heating, vehicle interior temperature has fluctuation, and influence is relaxed
Adaptive.By proposing a kind of new defrosting structure, when air-conditioner set enters defrosting mode, four-way valve does not commutate the present invention, in-car
Blower fan still blows out hot blast, reduces the fluctuation of vehicle interior temperature, improves heating performance.
The present invention is in automobile air conditioning system system heating operation, using the teaching of the invention it is possible to provide the thermal source of stabilization, substantially reduces defrost to in-car
The influence of temperature, improves system heating performance and air-conditioning system functional reliability, it is to avoid impact of the frequent start-stop of air-conditioning to battery,
Environment inside car temperature fluctuation is small, and system hypothermia heating performance can be also effectively improved.
Preferably, the D ends (four-way valve 2 includes four ends, respectively C-terminal, D ends, E ends and S ends) of the four-way valve 2 and institute
The outlet for stating compressor 1 is connected, and the S ends of the four-way valve 2 are connected with the entrance of the compressor 1, and have：
The port of export of more than two outdoor heat exchangers is connected to after mutually being converged by respective primary outlet pipeline
The C-terminal of the four-way valve, the entrance point of more than two outdoor heat exchangers is mutually converged by respective main inlet ductwork
One end of the throttling arrangement 4 is connected to afterwards；
Or, the port of export of more than two outdoor heat exchangers is connected after mutually being converged by respective primary outlet pipeline
One end of the throttling arrangement 4 is connected to, the entrance point of more than two outdoor heat exchangers passes through respective main inlet tube
Road is connected to the C-terminal of the four-way valve after mutually converging.
This is that the port of export of more than two outdoor heat exchangers of air-conditioning system of the invention is connected by primary outlet pipeline
Entrance point to the specific connected mode and more than two outdoor heat exchangers of throttling arrangement or four-way valve passes through main inlet tube
Road is connected to the specific connected mode of throttling arrangement or four-way valve, and realizing can connect to pressure by each outdoor heat exchanger
On the miscellaneous part of the air conditioner circulating system such as contracting machine and throttling arrangement, such that outdoor heat exchanger is carried out in cooling mode
Condense heat release, be evaporated heat absorption in a heating mode, complete the refrigeration of air-conditioning system or heat circulation.
Preferably, also including being connected to the fluid reservoir 5 of the other end of the throttling arrangement 4,
Export branch road is connected with the port of export of each outdoor heat exchanger (i.e. with the primary outlet line branching
The port of export is connected to primary outlet pipeline or export branch road), and each outdoor heat exchanger entrance point with the main import
Import branch road (i.e. entrance point is connected to main inlet ductwork or import branch road) is connected with line branching, and is had：
More than two export branch roads are connected in the fluid reservoir 5 after mutually converging, more than two imports
Branch road is connected to the E ends of the four-way valve 2 after mutually converging；Or, more than two export branch roads are connected to after mutually converging
The E ends of the four-way valve 2, more than two import branch roads are connected in the fluid reservoir 5 after mutually converging.
This is the port of export setting export branch road of more than two outdoor heat exchangers of air-conditioning system of the invention and passes through
Export branch road is connected to fluid reservoir or the specific connected mode of four-way valve and the entrance point of more than two outdoor heat exchangers sets
Put import branch road and the specific connected mode of fluid reservoir or four-way valve is connected to by import branch road, realizing can be by each room
External heat exchanger can be connected to the high pressure gas end of compressor to utilize high temperature when defrosting defrost is needed by import branch road
High-pressure refrigerant condenses heat release in the outdoor heat exchanger that need to be defrosted, fluid reservoir is back to by export branch road in enter and follow
Ring, to reach the purpose of defrost, remaining outdoor heat exchanger is due to that need not carry out defrost defrosting, therefore it is still to be entered by master
Mouth pipeline and primary outlet pipeline are connected to the parts such as compressor, four-way valve.
Preferably, the control valve group part at the port of export of each outdoor heat exchanger is used to control the port of export to connect master
Export pipeline connects export branch road；
Control valve group part at the entrance point of each outdoor heat exchanger is used to control the entrance point to connect main inlet tube
Import branch road is connected on road.
By be disposed in the outdoor at heat exchanger exit for controlling the port of export to connect primary outlet pipeline or export branch road
Control valve group part and the control valve for controlling the main inlet ductwork of entrance point connection or import branch road being arranged at entrance point
Component, enables to outdoor heat exchanger outlet primary outlet pipeline, entrance point that normal refrigeration is realized when connecting main inlet ductwork
The purpose of pattern or heating mode, can be real when the outdoor heat exchanger port of export connects export branch road and entrance point connection import branch road
Now to the outdoor heat exchanger heat the purpose and effect of defrost, complete needs accurately to be adjusted according to actual defrost
With the effect of control.
Embodiment 2
As shown in figure 1, the present embodiment is the preferred embodiment on the basis of embodiment 1,
The outdoor heat exchange unit includes two outdoor heat exchangers parallel with one another, respectively the first outdoor heat exchanger 301
With the second outdoor heat exchanger 302 (heat exchange area of two outdoor heat exchangers is preferably equal)：
The first end 3011 of first outdoor heat exchanger 301 by the first main road 11 with second outdoor heat exchanger
302 the 3rd connected main road 13 of the 3rd end 3021 is connected to the C-terminal of the four-way valve 2 after mutually converging；
Second end 3012 of first outdoor heat exchanger 301 by the second main road 12 with second outdoor heat exchanger
302 the 4th connected main road 14 of the 4th end 3022 is connected to the throttling arrangement 4 (preferably electric expansion valve) after mutually converging
Described one end.
This is that the outdoor heat exchange unit of air-conditioning system of the invention includes the preferred constructive forms of two outdoor heat exchangers, with
And two respective one end of outdoor heat exchanger (respectively first end and the 3rd end) are converged by the first main road and the 3rd main road respectively
The specific connected mode and two respective one end of outdoor heat exchanger (difference of throttling arrangement or four-way valve are connected to after conjunction
Be the second end and the 4th end) converged by the second main road and the 4th main road respectively after be connected to the specific of throttling arrangement or four-way valve
Connected mode, realizing can connect to the air conditioner circulating systems such as compressor and throttling arrangement by two outdoor heat exchangers
Miscellaneous part on, such that each outdoor heat exchanger carries out condensation heat release, carries out in a heating mode in cooling mode
Evaporation endothermic, completes the refrigeration of air-conditioning system or heats circulation.
Preferably,
The first end 3011 of first outdoor heat exchanger 301 is connected with the phase branch of first main road 11
One branch road 15, the 3rd end 3021 of second outdoor heat exchanger 302 is connected with the phase branch of the 3rd main road 13
3rd branch road 17, the tie point 15 be connected to after mutually converging with the 3rd branch road 17 fluid reservoir 5 (referring to Fig. 1, its
Three pipes are inserted, are three control) in；
Second end 3012 of first outdoor heat exchanger 301 is connected with the phase branch of second main road 12
Two branch roads 16, the 3rd end 3021 of second outdoor heat exchanger 302 is connected with the phase branch of the 4th main road 14
4th branch road 18, second branch road 16 is connected to the E ends of the four-way valve 2 after mutually converging with the 4th branch road 18.
This is that air-conditioning system of the invention includes two preferred constructive forms of outdoor heat exchanger, and two outdoor heat exchanges
Respective one end of device (respectively first end and the 3rd end) sets export branch road (including tie point and the 3rd branch road) and difference
The specific connected mode and two outdoors that fluid reservoir or four-way valve are connected to after being converged by tie point and the 3rd branch road are changed
Respective one end (respectively the second end and the 4th end) of hot device sets import branch road (including the second branch road and the 4th branch road) and divides
The specific connected mode of fluid reservoir or four-way valve is connected to after not converging by the second branch road and the 4th branch road, realizing can be by
Each outdoor heat exchanger can be connected to the high pressure of compressor when needing to defrost defrost by the second branch road or the 4th branch road
Exhaust end condenses heat release with using high-temperature high-pressure refrigerant in the outdoor heat exchanger that need to be defrosted, by tie point or the 3rd
Branch road enters circulation in being back to fluid reservoir, and to reach the purpose of defrost, when the first outdoor heat exchanger defrost, the second outdoor is changed
Hot device do not carry out defrost defrosting, carry out normal evaporation endothermic, its be still that compression is connected to by the 3rd main road and the 4th main road
The parts such as machine, four-way valve；When the second outdoor heat exchanger defrost, the first outdoor heat exchanger does not carry out defrost defrosting, carries out normally
Evaporation endothermic, its be still that the parts such as compressor, four-way valve are connected to by the first main road and the second main road.
Preferably, the control valve group part includes：
It is arranged at the first triple valve 801 of the first end 3011 of first outdoor heat exchanger 301, the described 1st
The A1 ends of port valve 801 connect the first end, B1 ends at (the first triple valve includes three ends, respectively A1 ends, B1 ends and C1 ends)
Connect first main road 11, C1 ends and connect the tie point 15；
It is arranged at second triple valve 802 at second end 3012 of first outdoor heat exchanger 301, the described 2nd 3
The A2 ends of port valve 802 connect second end, B2 ends at (the second triple valve includes three ends, respectively A2 ends, B2 ends and C2 ends)
Connect second main road 12, C2 ends and connect second branch road 16；
It is arranged at the 3rd triple valve 803 at the 3rd end 3021 of second outdoor heat exchanger 302, the described 3rd 3
The A3 ends of port valve 803 connect the 3rd end, B3 ends at (the 3rd triple valve includes three ends, respectively A3 ends, B3 ends and C3 ends)
Connect the 3rd main road 13, C3 ends and connect the 3rd branch road 17；
It is arranged at the 4th triple valve 804 at the 4th end 3022 of second outdoor heat exchanger 302, the described 4th 3
The A4 ends of port valve 804 connect the 4th end, B4 ends at (the 4th triple valve includes three ends, respectively A4 ends, B4 ends and C4 ends)
Connect the 4th main road 14, C4 ends and connect the 4th branch road 18.
By being arranged on being also to turn on for controlling first end to connect the first main road at the first outdoor heat exchanger first end
First triple valve of tie point and be arranged at the second end for controlling the second logical second main road of termination to be also to turn on the
Second triple valve of two branch roads, can as needed judge whether whether frosting needs defrosting to the first outdoor heat exchanger, if desired
If then control the first triple valve to control A1 ends to be connected to C1 ends, the second triple valve A2 ends are connected into C2 ends, if need not remove
White then control A1 ends are connected to B1 ends, A2 ends and are connected to B2 ends, complete the intelligence switching between defrosting and normal cooling and warming pattern；
By being arranged on being also to turn on for controlling the 3rd termination to lead to the 3rd main road at the end of the second outdoor heat exchanger the 3rd
3rd triple valve of the 3rd branch road and be arranged at the 4th end for controlling the 4th logical 4th main road of termination to be also to turn on the
4th triple valve of four branch roads, can as needed judge whether whether frosting needs defrosting to the second outdoor heat exchanger, if desired
If then control the 3rd triple valve to control A3 ends to be connected to C3 ends, the 4th triple valve A4 ends are connected into C4 ends, if need not remove
White then control A3 ends are connected to B3 ends, A4 ends and are connected to B4 ends, complete the intelligence switching between defrosting and normal cooling and warming pattern；
So as to complete and realize any one in two outdoor heat exchangers heat defrost, another evaporation endothermic
Purpose and effect, complete the effect for accurately being adjusted and being controlled according to actual defrost needs.
1. refrigeration mode
When refrigeration mode runs, the first triple valve 801, the second triple valve 802, the 3rd triple valve 803 and the 4th triple valve
804 A is to, to being connected, C does not commutate to closing, the no power of four-way valve 2 with B.Compressor air-discharging sequentially passes through four-way valve 2, point
Flow into two-way：The first triple valve 801, the first outdoor heat exchanger 301, the second triple valve 802 are flowed through all the way；Flow through the 3rd in another road
Triple valve 803, the second outdoor heat exchanger 302, the 4th triple valve 804.Then throttling arrangement 4, liquid storage is again passed through after two-way converges
Tank 5, is again split into two-way and respectively flows through the first indoor heat exchanger 601 and the second indoor heat exchanger 602, then flows through four-way after converging
Valve 2, gas-liquid separator 7 return to compressor 1.First, second, third and fourth triple valve is preferably all three-way solenoid valve, under
Together.
2. heating mode
When heating mode runs, the first triple valve 801, the second triple valve 802, the 3rd triple valve 803 and the 4th triple valve
804 A is to, to being connected, to closing, four-way valve 2 is powered and commutates C with B.Compressor air-discharging sequentially passes through four-way valve 2, through shunting
Flow through the first indoor heat exchanger 601 all the way afterwards, flow through the second indoor heat exchanger 602 all the way, again by fluid reservoir 5, section after converging
Stream device 4, then it is split into two-way：The second triple valve 802, the first outdoor heat exchanger 301, the first triple valve 801 are flowed through all the way；One
Flow through the 4th triple valve 804, the second outdoor heat exchanger 302, the 3rd triple valve 803 in road.Then four-way valve is flowed through after two-way converges
2nd, gas-liquid separator 7 returns to compressor 1.In this running, fluid reservoir 5 is excessive in system circulation filling quantity of refrigerant
When play a part of store unnecessary refrigerant amount.
3. defrosting mode
When outdoor heat exchange unit 3 surface frosting to a certain extent when, unit enters defrost pattern.
1) A of the first triple valve 801 and the second triple valve 802 is to, to being connected, B is to closing with C.3rd triple valve 803
With the A of the 4th triple valve 804 to, to being connected, to closing, four-way valve 2 is still in energization commutation states for C with B.Compressor air-discharging
Four-way valve 2 is sequentially passed through, respectively into three tunnels：There is two-way to respectively flow through the first indoor heat exchanger 601 and the second indoor heat exchanger
602, then converge to fluid reservoir 5；Flow through the second triple valve 802, the first outdoor heat exchanger 301, the first triple valve in 3rd tunnel
801, also return to fluid reservoir 5.Again pass through throttling arrangement 4, the 4th triple valve 804, the second outdoor heat exchanger 302, the 3rd triple valve
803rd, four-way valve 2, gas-liquid separator 7 return to compressor 1.
2) A of the first triple valve 801 and the second triple valve 802 is to, to being connected, C is to closing with B.3rd triple valve 803
With the A of the 4th triple valve 804 to, to being connected, to closing, four-way valve 2 is still in energization commutation states for B with C.Compressor air-discharging
Four-way valve 2 is sequentially passed through, respectively into three tunnels：There is two-way to respectively flow through the first indoor heat exchanger 601 and the second indoor heat exchanger
602, then converge to fluid reservoir 5；Flow through the 4th triple valve 804, the second outdoor heat exchanger 302, the 3rd triple valve in 3rd tunnel
803, also return to fluid reservoir 5.Again pass through throttling arrangement 4, the second triple valve 802, the first outdoor heat exchanger 301, the first triple valve
801st, four-way valve 2, gas-liquid separator 7 return to compressor 1.
During this, by controlling the switch of triple valve, change the flow direction of refrigerant, make part exhaust can continue to flow into
It is in-car lasting heat supply in evaporator；Part exhaust is incorporated into fractional distilling tube simultaneously, enables the fractional distilling tube
Enough normal defrosts.After the completion for the treatment of that the part is defrosted, then the commutation for passing through three-way solenoid valve, continue to complete next part condenser
Defrost, until completing the defrost process of all condensers, system just exits the pattern.So as to efficiently solve system defrosting space-time
Mediate and only heat, the big problem of vehicle interior temperature fluctuation.
Embodiment 3
The present embodiment is the variant embodiment carried out under the specific embodiment of the triple valve of embodiment 2, is mainly led to
The on-off valve (not shown) for triple valve being substituted for and being arranged on two pipelines is crossed, to reach the effect of original triple valve,
It is preferred that on-off valve is magnetic valve, the reliability that can control system is higher.
Preferably, the control valve group part includes：
The first on-off valve being arranged on first main road 11 and the second break-make being arranged in the tie point 15
Valve；First end for controlling the first outdoor heat exchanger is the first main road of connection or connection tie point；
The 3rd on-off valve that is arranged on second main road 12 and be arranged at second branch road 16) on the 4th break-make
Valve；The second end for controlling the first outdoor heat exchanger is the second branch road of the second main road of connection or connection；
The 5th on-off valve being arranged on the 3rd main road 13 and the 6th break-make being arranged on the 3rd branch road 17
Valve；The 3rd end for controlling the second outdoor heat exchanger is the 3rd branch road of the 3rd main road of connection or connection；
The 7th on-off valve being arranged on the 4th main road 14 and the 8th break-make being arranged on the 4th branch road 18
Valve.The 4th end for controlling the second outdoor heat exchanger is the 4th branch road of the 4th main road of connection or connection.
Embodiment 4
As illustrated in fig. 1, it is preferred that the indoor heat-exchange unit includes two indoor heat exchangers parallel with one another, respectively
First indoor heat exchanger 601 and the second indoor heat exchanger 602；
One end of first indoor heat exchanger 601 is connected to described after mutually converging with one end of the second indoor heat exchanger 602
The E ends of four-way valve, the other end of the two is connected in the fluid reservoir 5 again after converging.
This is that the indoor heat-exchange unit of air-conditioning system of the invention specifically includes two preferred structure shapes of indoor heat exchanger
Formula, and be connected to after two respective one end of outdoor heat exchanger are converged respectively fluid reservoir or four-way valve specific connected mode,
And the respective other end of two outdoor heat exchangers converge respectively after be connected to the specific connected mode of four-way valve or fluid reservoir,
Realize the miscellaneous part that two outdoor heat exchangers can connect to the air conditioner circulating systems such as compressor and fluid reservoir
It is upper, enable each outdoor heat exchanger be evaporated in cooling mode heat absorption, carry out in a heating mode condensation heat release,
Condensation heat release can be also normally carried out under defrost pattern, the refrigeration of air-conditioning system is effectively completed, is heated and circulated with defrost.
Preferably, the air-conditioning system is electric bus air-conditioning system.This is the specific preferred of air-conditioning system of the invention
Structure type and application places, that is, being applied on electric bus can also when can be heated to the environment inside car of electric bus
Defrost is enough completed, is unlikely to reduce environment inside car temperature, improve the comfort level of passenger inside the vehicle.
According to the design feature of electric bus air-conditioning, outdoor heat exchanger is generally all divided into two parts, outdoor in every part
Electric three-way valve device is added between the inlet and outlet of heat exchanger, it is possible to achieve the outdoor heat exchanger of various pieces defrosts in turn,
Ensure simultaneously heat pump assembly can continuous firing, the stabilization of vehicle interior temperature reduces that PTC is electrically heated uses, extends automobile air conditioning system
Distance travelled, systematic function also can be lifted effectively.
The present invention also provides a kind of defrosting control method of such as foregoing air-conditioning system, as at least in outdoor heat exchange unit
When individual outdoor heat exchanger needs defrost, control needs the control valve group part at the outdoor heat exchanger entrance point and the port of export of defrost to move
Make, to enable that at least one outdoor heat exchanger is heated defrost.
As a result of foregoing air-conditioning system, therefore it can be controlled to enter when outdoor heat exchanger needs defrost
Mouth end or the control valve group part of the port of export so that the intake energy of the outdoor heat exchanger is connected to the high pressure gas end of compressor, so that
Obtain high pressure, high temperature refrigerant to enter, so that needing the outdoor heat exchanger of defrost to realize heating effect and the process of condensation, enter
And effect and the purpose of its surface frosting are reached away, and commutate without changing four-way valve at this moment, therefore original interior
The effect that heat exchanger carries out condensing heating still keeps constant, simply has any to need to ensure, should at least have an outdoor heat exchanger to carry
For the effect of evaporation endothermic, with the draw heat from environment, to be supplied to outdoor heat exchanger that is indoor and needing defrost.So that
Obtain the indoor environment temperature during defrost to be unlikely to decline, be effectively improved the level of comfort of interior.
Preferably, include first when the outdoor heat exchange unit includes two outdoor heat exchangers and the control valve group part,
When second, third is with the 4th triple valve 801,802,803,804：
If the first outdoor heat exchanger needs defrost, the A1 ends of the first triple valve 801 are controlled to be connected with C1 ends, control second
The A2 ends of triple valve 802 are connected with C2 ends so that the first end of first outdoor heat exchanger is connected with tie point, the second end
Connected with the second branch road, the first outdoor heat exchanger heating and defrosting；The A3 ends of the 3rd triple valve 803 are controlled to be connected with B3 ends, controlled
The A4 ends of the 4th triple valve 804 connect with B4 ends so that the 3rd end of second outdoor heat exchanger connects with the 3rd main road, the
Four ends are connected with the 4th main road, the heat absorption of the second outdoor heat exchanger refrigeration evaporator；
If the second outdoor heat exchanger needs defrost, the A3 ends of the 3rd triple valve 803 are controlled to be connected with C3 ends, control the 4th
The A4 ends of triple valve 804 connect with C4 ends so that the 3rd end of second outdoor heat exchanger is connected with the 3rd branch road, the 4th end
Connected with the 4th branch road, the second outdoor heat exchanger heating and defrosting；The A1 ends of the first triple valve 801 are controlled to be connected with B1 ends, controlled
The A2 ends of the second triple valve 802 connect with B2 ends so that the first end of first outdoor heat exchanger connects with the first main road, the
Two ends are connected with the second main road, the heat absorption of the first outdoor heat exchanger refrigeration evaporator；
This is that air-conditioning system of the invention includes two outdoor heat exchangers and specific controlling party during including four triple valves
Method and rate-determining steps, enabling to the first outdoor heat exchanger that condensation heat release, the second outdoor heat exchanger are carried out when needing defrost is carried out
Evaporation endothermic so that condensation heat release, the first outdoor heat exchanger are carried out when the second outdoor heat exchanger needs defrost and is evaporated heat absorption,
Complete the purpose and effect of the selective defrost effectively control of defrost.
Preferably, include first when the outdoor heat exchange unit includes two outdoor heat exchangers and the control valve group part,
When second, third, fourth, fifth, the six, the 7th and eight on-off valves：
If the first outdoor heat exchanger needs defrost, the on-off valve of the closing of the first and the 3rd on-off valve of control, second and the 4th
Open so that the first end of first outdoor heat exchanger is connected with tie point, the second end is connected with the second branch road, the first Room
External heat exchanger heating and defrosting；The on-off valve of the 5th and the 7th on-off valve opening, the 6th and the 8th is controlled to close so that the second Room
3rd end of external heat exchanger is connected with the 3rd main road, the 4th end is connected with the 4th main road, and the second outdoor heat exchanger refrigeration evaporator is inhaled
Heat；
If the second outdoor heat exchanger needs defrost, the on-off valve of the first and the 3rd on-off valve of control opening, second and the 4th
Close so that the 3rd end of second outdoor heat exchanger is connected with the 3rd branch road, the 4th end is connected with the 4th branch road, second Room
External heat exchanger heating and defrosting；The on-off valve of the closing of the 5th and the 7th on-off valve, the 6th and the 8th is controlled to open so that first Room
The first end of external heat exchanger is connected with the first main road, the second end is connected with the second main road, and the first outdoor heat exchanger refrigeration evaporator is inhaled
Heat；
This is that air-conditioning system of the invention includes two outdoor heat exchangers and specific controlling party during including eight on-off valves
Method and rate-determining steps, enabling to the first outdoor heat exchanger that condensation heat release, the second outdoor heat exchanger are carried out when needing defrost is carried out
Evaporation endothermic so that condensation heat release, the first outdoor heat exchanger are carried out when the second outdoor heat exchanger needs defrost and is evaporated heat absorption,
Complete the purpose and effect of the selective defrost effectively control of defrost.
Those skilled in the art is it is easily understood that on the premise of not conflicting, above-mentioned each advantageous manner can be free
Ground combination, superposition.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.With
Only it is the preferred embodiment of the present invention described in upper, it is noted that for those skilled in the art, not
On the premise of departing from the technology of the present invention principle, some improvement and modification can also be made, these are improved and modification also should be regarded as this
The protection domain of invention.
Claims (13)
1. a kind of air-conditioning system, it is characterised in that：Changed including compressor (1), four-way valve (2), throttling arrangement (4), and interior
Heat engine group (6) and outdoor heat exchange unit (3), the outdoor heat exchange unit (3) include more than two outdoor heat exchangers, each institute
The entrance point and the port of export for stating outdoor heat exchanger are provided with control valve group part, can be used in controlling the indoor heat-exchange unit system
While hot, need that by the outdoor heat exchanger of defrost defrost, remaining outdoor heat exchanger can be heated and be used for sweat cooling.
2. air-conditioning system according to claim 1, it is characterised in that：The D ends of the four-way valve (2) and the compressor
(1) outlet is connected, and the S ends of the four-way valve (2) are connected with the entrance of the compressor (1), and have：
The port of export of more than two outdoor heat exchangers is connected to described after mutually being converged by respective primary outlet pipeline
The C-terminal of four-way valve, the entrance point of more than two outdoor heat exchangers is connected after mutually being converged by respective main inlet ductwork
It is connected to one end of the throttling arrangement (4)；
Or, the port of export of more than two outdoor heat exchangers is connected to after mutually being converged by respective primary outlet pipeline
One end of the throttling arrangement (4), the entrance point of more than two outdoor heat exchangers is by respective main inlet ductwork
The C-terminal of the four-way valve is connected to after mutually converging.
3. air-conditioning system according to claim 2, it is characterised in that：It is also another including being connected to the throttling arrangement (4)
The fluid reservoir (5) at end.
Export branch road is connected with the primary outlet line branching in the port of export of each outdoor heat exchanger, and every
The entrance point of the individual outdoor heat exchanger is connected with import branch road with the main inlet ductwork branch, and has：
More than two export branch roads are connected in the fluid reservoir (5) after mutually converging, more than two import branch
Road is connected to the E ends of the four-way valve (2) after mutually converging；Or, more than two export branch roads are connected to after mutually converging
The E ends of the four-way valve (2), more than two import branch roads are connected in the fluid reservoir (5) after mutually converging.
4. air-conditioning system according to claim 3, it is characterised in that：Control at the port of export of each outdoor heat exchanger
Valve module processed is used to control the port of export to connect primary outlet pipeline or connect export branch road；
And/or, the control valve group part at the entrance point of each outdoor heat exchanger is used to control the entrance point to connect main import
Pipeline connects import branch road.
5. according to the air-conditioning system that one of claim 2-4 is described, it is characterised in that：
The outdoor heat exchange unit includes two outdoor heat exchangers, and respectively the first outdoor heat exchanger (301) and the second outdoor are changed
Hot device (302)：
The first end (3011) of first outdoor heat exchanger (301) by the first main road (11) with second outdoor heat exchange
The 3rd connected main road (13) of 3rd end (3021) of device (302) is connected to the C-terminal of the four-way valve (2) after mutually converging；
And/or, second end (3012) of first outdoor heat exchanger (301) by the second main road (12) with the second Room
The 4th connected main road (14) of 4th end (3022) of external heat exchanger (302) is connected to the throttling arrangement (4) after mutually converging
Described one end.
6. air-conditioning system according to claim 5, it is characterised in that：
The first end (3011) of first outdoor heat exchanger (301) is connected with the first main road (11) phase branch
Tie point (15), the 3rd end (3021) and the 3rd main road (13) phase point of second outdoor heat exchanger (302)
The 3rd branch road (17) is connected with to branch, the tie point (15) is connected to the storage after mutually converging with the 3rd branch road (17)
In flow container (5)；
And/or, second end (3012) of first outdoor heat exchanger (301) and the second main road (12) phase branch ground
It is connected with the second branch road (16), the 3rd end (3021) of second outdoor heat exchanger (302) and the 4th main road
(14) the 4th branch road (18) is connected with to phase branch, second branch road (16) is connected after mutually converging with the 4th branch road (18)
To the E ends of the four-way valve (2).
7. air-conditioning system according to claim 6, it is characterised in that：The control valve group part includes：
It is arranged at first triple valve (801) of the first end (3011) of first outdoor heat exchanger (301), described first
The A1 ends of triple valve (801) connect the first end, B1 ends and connect first main road (11), the C1 ends connection tie point
(15)；
And/or, it is arranged at second triple valve (802) of second end (3012) of first outdoor heat exchanger (301), institute
The A2 ends for stating the second triple valve (802) connect second end, B2 ends and connect second main road (12), the connection of C2 ends described the
Two branch roads (16)；
And/or, it is arranged at the 3rd triple valve (803) of the 3rd end (3021) of second outdoor heat exchanger (302), institute
The A3 ends for stating the 3rd triple valve (803) connect the 3rd end, B3 ends and connect the 3rd main road (13), the connection of C3 ends described the
Three branch roads (17)；
And/or, it is arranged at the 4th triple valve (804) of the 4th end (3022) of second outdoor heat exchanger (302), institute
The A4 ends for stating the 4th triple valve (804) connect the 4th end, B4 ends and connect the 4th main road (14), the connection of C4 ends described the
Four branch roads (18).
8. air-conditioning system according to claim 6, it is characterised in that：The control valve group part includes：
The first on-off valve being arranged on first main road (11) and the second break-make being arranged in the tie point (15)
Valve；
And/or, the 3rd on-off valve that is arranged on second main road (12) and be arranged on second branch road (16) the
Four on-off valves；
And/or, the 5th on-off valve that is arranged on the 3rd main road (13) and be arranged on the 3rd branch road (17) the
Six on-off valves；
And/or, the 7th on-off valve that is arranged on the 4th main road (14) and be arranged on the 4th branch road (18) the
Eight on-off valves.
9. according to the air-conditioning system that one of claim 1-8 is described, it is characterised in that：The indoor heat-exchange unit includes two rooms
Interior heat exchanger, respectively the first indoor heat exchanger (601) and the second indoor heat exchanger (602)；
And/or, one end of first indoor heat exchanger (601) connects after mutually converging with one end of the second indoor heat exchanger (602)
To the E ends of the four-way valve, the other end of the two is connected in the fluid reservoir (5) again after converging.
10. according to the air-conditioning system that one of claim 1-9 is described, it is characterised in that：The air-conditioning system is empty electric bus
Adjusting system.
A kind of 11. defrosting control methods of the air-conditioning system as described in one of claim 1-10, it is characterised in that：Work as outdoor heat exchange
When at least one of unit outdoor heat exchanger needs defrost, control is needed at the outdoor heat exchanger entrance point and the port of export of defrost
Control valve group part action, to enable that at least one outdoor heat exchanger is heated defrost.
12. defrosting control methods according to claim 11, it is characterised in that：When the outdoor heat exchange unit includes two
When outdoor heat exchanger and the control valve group part include first, second, third and fourth triple valve (801,802,803,804)：
If the first outdoor heat exchanger needs defrost, the A1 ends of the first triple valve (801) are controlled to be connected with C1 ends, control second
The A2 ends of triple valve (802) connect with C2 ends, control the A3 ends of the 3rd triple valve (803) to be connected with B3 ends, control the 4th threeway
The A4 ends of valve (804) connect with B4 ends；
If the second outdoor heat exchanger needs defrost, the A3 ends of the 3rd triple valve (803) are controlled to be connected with C3 ends, control the 4th
The A4 ends of triple valve (804) connect with C4 ends, and the A1 ends of the first triple valve of control (801) connect with B1 ends, control the second threeway
The A2 ends of valve (802) connect with B2 ends.
13. defrosting control methods according to claim 11, it is characterised in that：When the outdoor heat exchange unit includes two
Outdoor heat exchanger and the control valve group part include the first, second, third, fourth, the five, the six, the 7th and the 8th on-off valve
When：
If the first outdoor heat exchanger needs defrost, the on-off valve of the closing of the first and the 3rd on-off valve of control, second and the 4th is beaten
Open, the on-off valve of the 5th and the 7th on-off valve of control opening, the 6th and the 8th is closed；
If the second outdoor heat exchanger needs defrost, the on-off valve of the first and the 3rd on-off valve of control opening, second and the 4th is closed
Close, the on-off valve of the closing of the 5th and the 7th on-off valve of control, the 6th and the 8th is opened.
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| CN109442793A (en) * | 2018-11-21 | 2019-03-08 | 宁波奥克斯电气股份有限公司 | A kind of air-conditioning defrosting system and air-conditioning system |
| 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 |
| CN112781269A (en) * | 2021-03-04 | 2021-05-11 | 成都绿建工程技术有限公司 | Air source heat pump unit with supercooling alternative defrosting function and operation control method thereof |
| CN115077119A (en) * | 2022-07-01 | 2022-09-20 | 江苏省华扬太阳能有限公司 | Non-stop quick defrosting energy-saving air conditioner |
| CN115235141A (en) * | 2022-07-14 | 2022-10-25 | 黄永年 | Efficient defrosting heat pump type small air conditioner |
| WO2023071152A1 (en) * | 2021-10-28 | 2023-05-04 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method, control apparatus, and air conditioner |
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| JP2013200085A (en) * | 2012-03-26 | 2013-10-03 | Fujitsu General Ltd | Air conditioner |
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