CN109579364A - A kind of air source heat pump system alternately to be defrosted based on single outside heat exchanger multiple branch circuit - Google Patents
A kind of air source heat pump system alternately to be defrosted based on single outside heat exchanger multiple branch circuit Download PDFInfo
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- CN109579364A CN109579364A CN201910027522.3A CN201910027522A CN109579364A CN 109579364 A CN109579364 A CN 109579364A CN 201910027522 A CN201910027522 A CN 201910027522A CN 109579364 A CN109579364 A CN 109579364A
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- heat exchanger
- branch
- expansion valve
- defrosting
- outside heat
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Classifications
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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
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Defrosting Systems (AREA)
Abstract
The present invention relates to a kind of air source heat pump systems alternately to be defrosted based on single outside heat exchanger multiple branch circuit, belong to refrigeration, air-conditioning and technical field of heat pumps.It solves the problems, such as air source heat pump defrosting technology in the prior art or significantly affects heating effect or energy consumption is larger or system structure complex effects system compactness.The present invention includes: outside heat exchanger and inside heat exchanger.Wherein, the front end connection first branch electric expansion valve and second branch electric expansion valve of outside heat exchanger.Aperture by controlling each branch electric expansion valve realizes the switching of branch heating and defrosting function.When defrosting, single branch defrosting, another branch heating is realized and is defrosted under the premise of not increasing system bulk and weight, additionally not consuming electric energy, while weakening influence of the defrosting process to heating effect.
Description
Technical field
The present invention relates to refrigeration, air-conditioning and technical field of heat pumps, more particularly to one kind is based on single outside heat exchanger multiple branch circuit
The alternately air source heat pump system of defrosting.
Background technique
As the furniture and country of energy crisis are to the popularization of clean energy resource and the development of hot pump in low temp technology, air-source
Heat pump warm oneself in winter and domestic hot-water supply in terms of using more and more extensive, but when ambient temperature is lower, be
From outside air draw heat, the outside heat exchanger surface temperature of heat pump system can be lower than 0 DEG C, and the water in outside air steams at this time
Gas can condense frost be covered on outside heat exchanger surface can be got deeper if frost layer is eliminated not in time, reduce outside heat exchanger change
Thermal effect will lead to the failures such as system low-voltage protection or excessive discharge temperature, very to reduce heat pump system heating capacity when serious
To causing system unit to damage.
The Defrost technology of currently used comparative maturity has refrigerant inverse defrosting, hot gas bypass defrosting and electric heating to remove
Frost, it is also proposed that the mode that double evaporators alternately defrost.
High temperature refrigerant need to be arranged heat exchanger outward by refrigerant inverse defrosting, and low-temperature refrigerant row is exchanged heat inwardly
Device will lead to inside high temperature decline, influence inside comfort, and refrigerant commutation is related to the start and stop of multiple components,
Not only time-consuming more, refrigerant commutation leads to high-low pressure variation acutely, and very big impact is caused to system element, while being also energy
Consume maximum Defrost mode.
Without changing refrigerant flow direction when hot gas bypass defrosting, draw a bypass to outside heat exchanger in exhaust outlet of compressor,
By-pass switch control valve is opened when needing to defrost, a part of high-temperature gas of compressor discharge enters outside heat exchanger and removed
Frost, a part of high-temperature gas, which still enters inside heat exchanger, to be continued to heat.Although defrosting process heat-production functions do not stop, due to phase
When a part of high-temperature gas enters outside heat exchanger, the high-temperature gas into inside heat exchanger is significantly reduced, or can be biggish
Influence heating effect.
Electric defrosting needs to increase on heat exchanger on the outside electric calorifie installation, and when defrosting is removed by directly consumption electric energy heating
Frost, this mode controls simply, but energy consumption is larger, and electric calorifie installation can obviously increase outside heat exchanger volume.
The Defrost technology of outside heat exchanger alternately defrosting will be wherein on the outside of one group by control system inner valve member in defrosting
Heat exchanger is switched to the subcooler of internal exchanger, is defrosted using refrigerant high-temperature residual heat, and one group of defrosting finishes and switches again
Another group is defrosted in the same way, such alternate run, preferably improves defrosting efficiency, but heat exchange on the outside of the process that defrosts
Device area reduce half still can heating effect on the inside of large effect, and system need to be equipped with heat exchanger on the outside of two groups, two groups
Outside heat exchanger also needs respectively to be equipped with blower, needs two four-way valves to switch over and is just able to achieve alternately defrosting, not only system
Complexity is higher, is also unfavorable for unit miniaturization.
In conclusion existing air source heat pump defrosting technology or significantly affect heating effect or energy consumption it is larger or influence system
System compactedness, it is difficult to meet air source heat pump system future development demand, one kind is needed not consume the energy, unknown development additionally
Sound heating effect, the system that defrosting is realized under the premise of not changing system bulk.
Summary of the invention
In view of above-mentioned analysis, the embodiment of the present invention is intended to provide one kind based on single outside heat exchanger multiple branch circuit alternately defrosting
Air source heat pump system, to solve existing air source heat pump defrosting technology or significantly affect heating effect or energy consumption it is larger,
Or influence system compactness, it is difficult to the problem of meeting air source heat pump system future development demand.
The purpose of the present invention is to provide a kind of air source heat pump systems alternately defrosted based on single outside heat exchanger multiple branch circuit
System is formed with more easily control mode with simpler system, makes defrosting process more efficient, more comfortable, while do not increased
Adding system volume weight.
The air source heat pump system to defrost is replaced based on singly outside heat exchanger multiple branch circuit the embodiment of the invention provides a kind of,
It include: outside heat exchanger and inside heat exchanger；One end connection first branch electric expansion valve and second branch of outside heat exchanger
Electric expansion valve；By control first branch electric expansion valve and second branch electric expansion valve aperture realize the first branch,
The switching of second branch heating and defrosting function.
Preferably, outside heat exchanger connects at least three electric expansion valves, and point at least three branches defrost；Pass through control
The aperture of electric expansion valve processed, single branch defrosting, other branches are heated, are successively defrosted.
Specifically, the pipeline of the first branch and second branch is interlaced, and is uniformly distributed, and arbitrarily two-by-two adjacent four
Pipeline, two are the first branch, and two are second branch.
Specifically, the other end of outside heat exchanger connects four-way valve, and four-way valve connects gas-liquid separator.
Specifically, gas is separated and is passed through compressor by gas-liquid separator connect compressor, gas-liquid separator.
Specifically, compressor is connect by four-way valve with one end of inside heat exchanger；Compressor is by low temperature refrigerant gas
Compression heating.
Specifically, the other end of inside heat exchanger connects cooling electronic expansion valve.
Specifically, cooling electronic expansion valve is connect with one end of the fluid reservoir of storage excess refrigerant.
Specifically, the other end of fluid reservoir is connect with device for drying and filtering.
Specifically, device for drying and filtering connection first branch electric expansion valve and second branch electric expansion valve；Dry filter
Impurity of the device for being generated during filtration cycle.
It is using the beneficial effect of above-described embodiment:
1, the part of alternately defrosting is limited to single outside heat exchange by using heat exchanger on the outside of multiple branch circuit list by the present invention
In device, defrosting can be realized without outside heat exchanger more than two and blower in this way, not will increase system bulk and weight.
2, the present invention is directly entered outside heat exchanger by using the high-temp liquid that inside heat exchanger is discharged and defrosts,
It is defrosted using the high-temperature residual heat for completing heating circularly cooling agent, does not consume electric energy additionally, it is more energy saving.
3, the present invention is by rationally designing the branch of outside heat exchanger, will defrost the high-temperature residual heat that utilizes of branch into
Row rationally recycling, reinforces the heat transfer effect of heating branch, although heat exchanger disengagement area reduces on the outside of when defrosting, waste heat is returned
Receipts improve heat transfer temperature difference, will not significantly affect heating effect, increase the comfort of inside.
It in the present invention, can also be combined with each other between above-mentioned each technical solution, to realize more preferred assembled schemes.This
Other feature and advantage of invention will illustrate in the following description, also, certain advantages can become from specification it is aobvious and
It is clear to, or understand through the implementation of the invention.The objectives and other advantages of the invention can by specification, claims with
And it is achieved and obtained in specifically noted content in attached drawing.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not to be construed as limiting the invention, in entire attached drawing
In, identical reference symbol indicates identical component.
Fig. 1 is system heat-production functions schematic diagram (arrow expression refrigerant flow direction)；
Fig. 2 is cooling system functional schematic (arrow expression refrigerant flow direction)；
Fig. 3 is two kinds of outside heat exchange manifold arrangement modes.
Appended drawing reference:
Heat exchanger on the outside of 1-；2- first branch electric expansion valve；3- second branch electric expansion valve；The expansion of 4- cooling electronic
Valve；Heat exchanger on the inside of 5-；6- compressor；7- four-way valve；8- gas-liquid separator；9- device for drying and filtering；10- fluid reservoir；11- first
Bypass line；12- second branch pipeline.
Specific embodiment
Specifically describing the preferred embodiment of the present invention with reference to the accompanying drawing, wherein attached drawing constitutes the application a part, and
Together with embodiments of the present invention for illustrating the principle of the present invention, it is not intended to limit the scope of the present invention.
On the one hand, the present invention provides a kind of air source heat pump system alternately to defrost based on single outside heat exchanger multiple branch circuit.
It include: outside heat exchanger 1, first branch electric expansion valve 2, second branch electric expansion valve 3, cooling electronic expansion valve 4, inside
Heat exchanger 5, compressor 6, four-way valve 7, gas-liquid separator 8, device for drying and filtering 9, fluid reservoir 10；
The front end connection first branch electric expansion valve 2 and second branch electric expansion valve 3 of outside heat exchanger 1, two electricity
Outside heat exchanger 1 is divided to for two branches by sub- expansion valve.A certain branch can be routed heating shape by adjusting branch electronic expansion valve opening
State is adjusted to first frost state, in addition, another branch can continue to complete heat-production functions when single spur track defrosts.Pass through control first
The aperture of road electric expansion valve 2 and second branch electric expansion valve 3 realizes the switching of two branch heatings and defrosting function, into one
Step ground realizes that two branches alternately defrost.
The internal duct of outside heat exchanger 1 is divided into two branches: the first branch and second branch；First branch electronic expansion
Valve 2 is connected with the first branch, and second branch electric expansion valve 3 is connected with second branch.The first branch of outside heat exchanger 1
It is interlaced with second branch, and be uniformly distributed.
Fig. 1 is system heat-production functions schematic diagram, when using refrigerant flow direction when this system progress single spur track defrosting and heating
Refrigerant flow direction is identical.The four-way valve 7 of system is adjusted to heating mode, and refrigerant flow direction is as shown in Figure 1, followed by first
Road electric expansion valve 2 and second branch electric expansion valve 3, outside heat exchanger 1, four-way valve 7, gas-liquid separator 8, compressor 6, four
Port valve 7, inside heat exchanger 5, cooling electronic expansion valve 4, fluid reservoir 10 and device for drying and filtering 9.
The work for the air source heat pump system that 1 analysis single outside heat exchanger multiple branch circuit of the invention alternately defrosts with reference to the accompanying drawings
Principle:
When being defrosted, the first branch defrosts first, at this time 2 standard-sized sheet of first branch electric expansion valve, the
The throttling of two branch electric expansion valves 3, system are switched to first branch defrosting state by heating state.
2 standard-sized sheet of first branch electric expansion valve, does not throttle to the temperature refrigerant liquid to come from inside heat exchanger,
The first branch can be considered the subcooler of inside heat exchanger at this time, be carried using the temperature refrigerant liquid that inside heat exchanger 5 is discharged
High-temperature residual heat to the first branch of outside heat exchanger 1 carry out heating realize defrosting.Meanwhile second branch electric expansion valve 3
Keep aperture when normal heat-production functions according to current working status, second branch electric expansion valve 3 continues to from inside heat exchanger
The temperature refrigerant liquid to come over throttles, and high-temp liquid is cooled to low temperature and low pressure liquid, low temperature and low pressure liquid after throttling
It flows into the pipeline of second branch and absorbs heat gasification from external environment, second branch continues to complete heat-production functions, to protect
Card heat-production functions will not stop.
During first branch defrosting, the temperature refrigerant liquid for flowing through the first branch, which is further cooled, becomes supercooling
Liquid flows through the low-temperature refrigerant liquid of second branch by drawing the heat of vaporization vaporization in external environment.
Refrigerant flows to gas-liquid separator 8 through four-way valve 7 from outside heat exchanger 1, gas-liquid separator 8 by liquid refrigerant and
Gas refrigerant separation.8 connect compressor 6 of gas-liquid separator, the cryogenic gas that compressor 6 will be isolated through gas-liquid separator 8
Compression heating.The compressed high-temperature gas of compressor 6 flows to inside heat exchanger 5 through four-way valve 7, and high-temperature gas is through inside heat exchanger
5 transfer thermal energy to inside environment, and the high temperature refrigerant gas of inside energy exchange is completed while improving inside environment temperature
Liquefaction is high-temp liquid, completes inside for heat function.
The other end of inside heat exchanger 5 connects cooling electronic expansion valve 4, and refrigerant liquid is flowed through cooling electronic expansion valve 4
To the fluid reservoir 10 of storage excess refrigerant, 10 other end of fluid reservoir connects device for drying and filtering 9, and device for drying and filtering 9, which filters out, to follow
The impurity generated during ring.Filtered temperature refrigerant liquid flows to first branch electric expansion valve 2 and second branch electricity
Sub- expansion valve 3 completes a first branch defrosting circulation.
After first branch defrosting, adjusted by two-way electronic expansion valve opening, by first branch electric expansion valve 2
It is adjusted to the normal aperture of heat-production functions, by 3 standard-sized sheet of second branch electric expansion valve, second branch defrosting is carried out, realizes first
Road replaces defrosting with second branch.
It is finished to second branch defrosting, entire defrosting process terminates, and two branch electric expansion valves are all adjusted to system at this time
The normal aperture of heat function, into normal heating state.So far, the defrosting of outside heat exchanger 1 is completed.
It is worth noting that, the high temperature that the temperature refrigerant liquid that heat exchanger 5 is discharged on the inside of first branch utilization carries
When waste heat is defrosted.The temperature of the first branch is apparently higher than second branch, understands some heat and passes through outside heat exchanger 1
Fin and second branch is passed to by the air that the first branch heats, increases the caloric receptivity of second branch low-temperature refrigerant.In this way,
By recycling a part of temperature refrigerant liquid waste heat, heating effect can be significantly reduced in defrosting.
In order to ensure heating branch can preferably absorb the waste heat of defrosting branch high-temp liquid, it should be ensured that heating branch
Pipeline must have defrosting bypass line adjacent thereto.That is, any adjacent four pipelines two-by-two, two are the first branch,
Two are second branch.
Fig. 3 is using the arrangement mode of heat exchange manifold on the outside of when two branches, and arrangement mode is including but not limited to this
Two ways, two branches can be preferably uniformly distributed by two kinds of pipeline arrangement modes in Fig. 3.The first branch and second branch
Interlaced distribution, can be more uniform defrost.When a certain branch defrosts, another branch continues heat-production functions,
Defrosting branch is interlaced with heating branch and is uniformly distributed, and heating branch is enable preferably to recycle defrosting branch high-temperature refrigeration
The waste heat of agent liquid can be improved efficiency of energy utilization, reduce influence of the defrosting to heating effect.
It should be noted that the air source heat pump system of the present invention alternately defrosted based on single outside heat exchanger multiple branch circuit
System, can divide multiple branches to defrost, influence of the more defrosting processes of branch to heating effect is smaller, it is only necessary to according to branch
Quantity is equipped with the branch electric expansion valve of identical quantity.When defrosting, single branch electric expansion valve standard-sized sheet defrosts, remaining branch
Road electric expansion valve keeps throttle, continues to complete heat-production functions.By controlling the aperture of each branch electric expansion valve, switching
Different branches successively defrost, until heat exchanger all branch defrostings in outside finish.
When cooling system, four-way valve 7 is adjusted to refrigeration mode, and refrigerant flow direction is according to shown in Fig. 2, followed by refrigeration electricity
Sub- expansion valve 4, inside heat exchanger 5, four-way valve 7, gas-liquid separator 8, compressor 6, four-way valve 7, outside heat exchanger 1, heating electricity
Sub- expansion valve (first branch electric expansion valve 2 and second branch electric expansion valve 3) heats electric expansion valve in the process
Standard-sized sheet.Refrigerant throttles through cooling electronic expansion valve 4 enters inside heat exchanger 5, and refrigerant evaporation is simultaneously inhaled from inner space air
Heat is taken, realizes refrigerating function.High-temperature gas is sent into outside heat exchanger 1 after the compression of compressor 6, by heat dissipation to the external world
Environment throttles through cooling electronic expansion valve 4 enter inside 5 evaporation endothermic of heat exchanger again, completes a refrigeration cycle.So follow
Ring is reciprocal, and inner space heat is endlessly transferred to external environment and realizes lasting refrigeration.
On the other hand, the specific embodiment of the invention provides a kind of air alternately to defrost based on single outside heat exchanger multiple branch circuit
The Defrost method of heat source pumping system, comprising the following steps:
S1, firstly, first branch electric expansion valve (2) is adjusted to defrosting mode, carry out first branch defrosting；
After the completion of S2, first branch defrosting, electronic expansion valve opening is adjusted, second branch defrosting is carried out.
In step S1, when carrying out first branch defrosting, first branch electric expansion valve (2) standard-sized sheet, second branch electronics is swollen
Swollen valve (3) throttling；The high-temp liquid of inside heat exchanger (5) discharge is directly entered the first branch and defrosts；Meanwhile second branch
Continue to complete heat-production functions.
In step S2, when carrying out second branch defrosting, second branch electric expansion valve (3) standard-sized sheet, first branch electronics is swollen
Swollen valve throttling；The high-temp liquid of inside heat exchanger (5) discharge is directly entered second branch and defrosts, meanwhile, the first branch after
It is continuous to complete heat-production functions.
Compared with prior art, the invention has the benefit that
1) structure is simple.The present invention is limited to list by using heat exchanger on the outside of multiple branch circuit list, by the part of alternately defrosting
In a outside heat exchanger, only corresponding electric expansion valve need to be equipped with according to number of branches and be controlled, be not required to increase additionally
The valve members such as four-way valve, solenoid valve.Defrosting, structure letter can be realized without outside heat exchanger more than two and blower in this way
It is single.The present invention is conducive to system structure miniaturization, lightweight, not will increase system bulk and weight.
2) more energy saving.The present invention is directly entered outside by using the temperature refrigerant liquid that inside heat exchanger is discharged
Heat exchanger defrosts, and is defrosted using the high-temperature residual heat for completing heating circularly cooling agent, does not consume electric energy additionally.
3) control is simple.When defrosting, the aperture of two outside branch electric expansion valves need to be only adjusted, so that it may complete heating
The switching of switching and two branches alternating defrosting functions with defrosting function.
4) heating effect is not reduced.When single spur track of the present invention defrosts, another branch can continue to complete heat-production functions.The present invention
It is interlaced and be uniformly distributed to design two branches, be conducive to heat branch to the temperature refrigerant liquid waste heat of defrosting branch into
Row recycling.The temperature refrigerant liquid waste heat of defrosting branch passes through the air being heated and passes to heating branch, reinforces heating branch
The heat transfer effect on road increases the caloric receptivity of heating branch low-temperature refrigerant.
It is high by recycling defrosting branch although heat exchanger disengagement area reduces on the outside of when defrosting when single spur track defrosts
The waste heat of warm refrigerant liquid, improves heat transfer temperature difference, will not significantly affect inside heating effect, increase the comfortable of inside
Property.
More than, it is merely preferred embodiments of the present invention, but scope of protection of the present invention is not limited thereto, it is any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
It is included within the scope of the present invention.
Claims (10)
1. a kind of air heat source pumping system based on the alternately defrosting of single outside heat exchanger multiple branch circuit, comprising: outside heat exchanger (1) and
Inside heat exchanger (5)；One end connection first branch electric expansion valve (2) of the outside heat exchanger (1) and second branch electronics
Expansion valve (3)；First is realized by the aperture of control first branch electric expansion valve (2) and second branch electric expansion valve (3)
Branch, second branch heat and the switching of defrosting function.
2. a kind of air heat source pumping system alternately to be defrosted based on single outside heat exchanger multiple branch circuit according to claim 1,
It is characterized in that, one end of the outside heat exchanger (1) connects at least three electric expansion valves, it is divided into the progress of at least three branches
Defrosting.
3. a kind of air heat source pumping system alternately to be defrosted based on single outside heat exchanger multiple branch circuit according to claim 1,
It is characterized in that, the pipeline of the first branch and second branch is interlaced, and it is uniformly distributed, arbitrarily two-by-two adjacent four
Pipeline, two are the first branch, and two are second branch.
4. a kind of air heat source pump alternately to be defrosted based on single outside heat exchanger multiple branch circuit according to claim 1,2 or 3
System, which is characterized in that the other end of the outside heat exchanger (1) connects four-way valve (7), and the four-way valve (7) connects gas-liquid
Separator (8).
5. a kind of air heat source pumping system alternately to be defrosted based on single outside heat exchanger multiple branch circuit according to claim 4,
It is characterized in that, gas-liquid separator (8) connect compressor (6), gas is separated and is passed through pressure by the gas-liquid separator (8)
Contracting machine (6).
6. a kind of air heat source pumping system alternately to be defrosted based on single outside heat exchanger multiple branch circuit according to claim 5,
It is characterized in that, the compressor (6) is connect by four-way valve (7) with one end of inside heat exchanger (5)；The compressor (6)
Low temperature refrigerant gas is compressed and is heated up.
7. a kind of air heat source pumping system alternately to be defrosted based on single outside heat exchanger multiple branch circuit according to claim 6,
It is characterized in that, the other end of the inside heat exchanger (5) connects cooling electronic expansion valve (4).
8. a kind of air heat source pumping system alternately to be defrosted based on single outside heat exchanger multiple branch circuit according to claim 7,
It is characterized in that, the cooling electronic expansion valve (4) connect with one end of the fluid reservoir (10) of storage excess refrigerant.
9. a kind of air heat source pumping system alternately to be defrosted based on single outside heat exchanger multiple branch circuit according to claim 8,
It is characterized in that, the other end of the fluid reservoir (10) is connect with device for drying and filtering (9).
10. -9 described in any item a kind of air heat alternately to be defrosted based on single outside heat exchanger multiple branch circuit according to claim 1
Source pumping system, which is characterized in that device for drying and filtering (9) connection first branch electric expansion valve (2) and second branch electronics
Expansion valve (3)；Impurity of the device for drying and filtering (9) for being generated during filtration cycle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027522.3A CN109579364B (en) | 2019-01-11 | 2019-01-11 | Air source heat pump system based on single-outside heat exchanger multi-branch alternative defrosting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910027522.3A CN109579364B (en) | 2019-01-11 | 2019-01-11 | Air source heat pump system based on single-outside heat exchanger multi-branch alternative defrosting |
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| CN109579364B CN109579364B (en) | 2021-01-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111854056A (en) * | 2019-04-26 | 2020-10-30 | 珠海格力电器股份有限公司 | Control method of heat pump system |
| CN112229097A (en) * | 2020-11-02 | 2021-01-15 | 赛诺浦新能源(江苏)有限公司 | Air source heat pump system with defrosting function and operation method thereof |
| CN113531696A (en) * | 2020-04-13 | 2021-10-22 | 青岛海尔空调电子有限公司 | Air-cooled heat pump air conditioning system capable of efficiently heating |
| CN113945022A (en) * | 2021-11-12 | 2022-01-18 | 华商国际工程有限公司 | Refrigeration and defrosting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113531696A (en) * | 2020-04-13 | 2021-10-22 | 青岛海尔空调电子有限公司 | Air-cooled heat pump air conditioning system capable of efficiently heating |
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| CN113945022A (en) * | 2021-11-12 | 2022-01-18 | 华商国际工程有限公司 | Refrigeration and defrosting system |
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| CN109579364B (en) | 2021-01-15 |
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