CN108800384A - Air-conditioning system and air conditioner - Google Patents
Air-conditioning system and air conditioner Download PDFInfo
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- CN108800384A CN108800384A CN201810686827.0A CN201810686827A CN108800384A CN 108800384 A CN108800384 A CN 108800384A CN 201810686827 A CN201810686827 A CN 201810686827A CN 108800384 A CN108800384 A CN 108800384A
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- air
- conditioning system
- refrigerant
- tonifying
- compressor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- 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
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The present invention discloses a kind of air-conditioning system and air conditioner, wherein air-conditioning system includes：Refrigerant pipeline and the compressor being connected by circulation successively by refrigerant pipeline, First Heat Exchanger, compensator, first throttling device, flash vessel and the second heat exchanger；Refrigerant in refrigerant pipeline enters the compensator after the compressor compresses through First Heat Exchanger, refrigerant in the compensator at least partly enters the flash vessel through first throttling device, refrigerant isolates gaseous coolant and liquid refrigerants in the flash vessel, the gaseous coolant isolated enters the compressor through tonifying Qi outlet and tonifying Qi entrance, and the liquid refrigerants isolated enters the compressor through the second heat exchanger.Technical solution of the present invention air-conditioning system increases compensator and solves the problems, such as that liquid refrigerants excessively causes heat exchange efficiency low in First Heat Exchanger, improves the heat efficiency of the air-conditioning system while work efficiency for adding flash vessel to improve compressor.
Description
Technical field
The present invention relates to air-conditioning technique field, more particularly to a kind of air-conditioning system and the air-conditioning with the air-conditioning system
Device.
Background technology
As a kind of energy-saving and environment-friendly heating technology, the application of heat pump air conditioner is more and more extensive.But in north of china in winter ring
It in the case that border temperature is too low, is carried out in heating operations using heat pump air conditioner, outdoor unit heat-exchange capacity declines, and compressor is just
The return-air amount of normal gas returning port is reduced, and compressor horsepower declines.Compressor suction draught head increases, and leads to refrigerant in air-conditioning system
Circular flow reduces, so that the heat of the indoor offer of heat pump air conditioner phase is reduced, heat efficiency reduces.
Invention content
The main object of the present invention is to provide a kind of air-conditioning system, it is intended to so that the heat efficiency of the air-conditioning system improves.
To achieve the above object, air-conditioning system proposed by the present invention, the air-conditioning system include：Refrigerant pipeline and by institute
Compressor, First Heat Exchanger, compensator, first throttling device, flash vessel and second that refrigerant pipeline is connected by circulation successively is stated to change
Hot device；
The flash vessel is exported with tonifying Qi, and the compressor has tonifying Qi entrance, is mended described in the tonifying Qi outlet
Gas entrance；
Refrigerant in refrigerant pipeline enters the compensator, the balance after the compressor compresses through First Heat Exchanger
Refrigerant in tank at least partly enters the flash vessel through first throttling device, and it is cold that refrigerant isolates gaseous state in the flash vessel
Matchmaker and liquid refrigerants, the gaseous coolant isolated enter the compressor, the separation through tonifying Qi outlet and tonifying Qi entrance
The liquid refrigerants gone out enters the compressor through the second heat exchanger.
Optionally, the calculation formula of 40 volume V of the compensator is：V=(1.5~1.7) × (m2-m1)/ρ；
Quality when m1 is compensator slack tank to be tested；M2 is compensator to be tested in the air-conditioning system course of work
It is stored with the gross mass after refrigerant；ρ is the density that liquid refrigerants is saturated in the air-conditioning system course of work.
Optionally, the volume of the compensator is 30%~40% of refrigerant total volume in system.
Optionally, the air-conditioning system further includes that tonifying Qi pipeline and increasing enthalpy switch, tonifying Qi described in the tonifying Qi pipeline connection
Outlet and the tonifying Qi entrance, the increasing enthalpy switch are installed on the tonifying Qi pipeline.
Optionally, the air-conditioning system includes multiple flash vessels, and multiple flash vessels are sequentially connected to first segment
It flows on the refrigerant pipeline between device and the second heat exchanger, and the tonifying Qi outlet of each flash vessel is connected to the compressor
Tonifying Qi entrance.
Optionally, the First Heat Exchanger is condenser, and second heat exchanger is evaporator.
Optionally, the air-conditioning system further includes second throttling device, and second constructional device is installed on the refrigerant
Pipeline, and between the flash vessel and the second heat exchanger.
Optionally, the first throttling device is electric expansion valve or capillary；
And/or the second throttling device is electric expansion valve or capillary.
Optionally, the compressor is rotor-type compressor.
The present invention also proposes a kind of air conditioner, and the air conditioner includes above-mentioned air-conditioning system.
In the heating recycle system of technical solution of the present invention, the refrigerant in refrigerant pipeline forms high temperature after compressor compresses
The gaseous coolant of high pressure then carries out the liquid refrigerants that heat release forms high temperature and pressure, to improve Indoor Temperature through First Heat Exchanger
Degree, the liquid refrigerants of the high temperature and pressure form the gas-liquid mixed state refrigerant of medium temperature and medium pressure by first throttling device.Positioned at first
The flash vessel in throttling set downstream can be depressured refrigerant and be realized gas-liquid separation, and the liquid refrigerants isolated is through the second heat exchange
Device enters compressor, refrigerant vapor in compressor suction evaporator and the gaseous coolant isolated through flash vessel, through flash distillation
The gaseous coolant that device is isolated plays the role of tonifying Qi to compressor, mixes compression with the low-pressure gas of compressor sucking, realizes
Enthalpy-increasing effect improves heating capacity under low temperature.
Further, since ambient temperature is relatively low, cause the pressure difference of high-pressure side and low-pressure side larger, excessive is cold
Matchmaker can be stranded in condenser, and technical solution of the present invention is in being additionally arranged compensator on refrigerant pipeline, when high-pressure side liquid refrigerants mistake
When more, in extra liquid refrigerants meeting automatic storage to compensator, part refrigerant carries out pressure reduction, solution through first throttling device
The problem that liquid refrigerants in First Heat Exchanger of having determined excessively causes heat exchange efficiency low, improves the heat efficiency of the air-conditioning system.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of one embodiment of air-conditioning system of the present invention；
Fig. 2 is pressure-enthalpy diagram in the air-conditioning system course of work in Fig. 1.
Drawing reference numeral explanation：
| Label | Title | Label | Title |
| 100 | Air-conditioning system | 51 | First throttling device |
| 10 | Compressor | 52 | Second throttling device |
| 11 | Tonifying Qi entrance | 60 | Flash vessel |
| 20 | Refrigerant pipeline | 70 | Tonifying Qi pipeline |
| 31 | First Heat Exchanger | 71 | Increasing enthalpy switchs |
| 32 | Second heat exchanger | 80 | Four-way valve |
| 40 | Compensator |
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining relative position relation, motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can
To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical solution occurs
Conflicting or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection model
Within enclosing.
Referring to Figures 1 and 2, the present invention proposes a kind of air-conditioning system 100.The air-conditioning system 100 is mainly heat pump air conditioner
Heating system.The heating operations of heat pump air conditioner are the inverse process of refrigeration, are changed by four-way valve cold in refrigerant pipeline 20
The flow direction of matchmaker, to realize the conversion between refrigeration and heating.
Heat pump air conditioner in the prior art is in the case where environment temperature is too low in heating process, frequency-changeable compressor
10 need high frequency to run, and the cold medium flux of system is substantially improved, but since outdoor environment temperature is low, low-pressure lateral pressure is very low, high
Pressure side but still maintains relatively high pressure, and under this working condition, a large amount of liquid refrigerants of system is poly- to stay in high-pressure side, causes
Liquid refrigerants is excessive in condenser, reduces the heat exchange area of condenser, condensing pressure is caused to increase, and heat efficiency reduces.
Technical solution of the present invention provides a kind of air-conditioning system 100 applied to heat pump air conditioner, the air-conditioning system 100 packet
It includes：Refrigerant pipeline 20 and the compressor 10 being connected by circulation successively by refrigerant pipeline 20, First Heat Exchanger 31, compensator 40,
One throttling set 51, flash vessel 60 and the second heat exchanger 32；This be connected by circulation as refrigerant in the refrigerant pipeline 20 followed by
Compressor 10, First Heat Exchanger 31, compensator 40, first throttling device 51, flash vessel 60 and the second heat exchanger 32, are changed by second
Refrigerant after hot device 32 exchanges heat travels further into the cycle compression of compressor 10 under the guiding of refrigerant pipeline 20.
Flash vessel 60 is exported with tonifying Qi, and compressor 10 has tonifying Qi entrance 11, tonifying Qi outlet tonifying Qi entrance 11；
Refrigerant in refrigerant pipeline 20 enters compensator 40, compensator 40 after the compression of compressor 10 through First Heat Exchanger 31
In refrigerant at least partly through first throttling device 51 enter flash vessel 60, refrigerant isolated in flash vessel 60 gaseous coolant and
Liquid refrigerants, the gaseous coolant isolated enter compressor 10, the liquid isolated through tonifying Qi outlet and tonifying Qi entrance 11
Refrigerant through the second heat exchanger 32 through entering compressor 10.
The First Heat Exchanger 31 is condenser in the air-conditioning system 100 of the present invention, and the second heat exchanger 32 is evaporator.
In the heating recycle system of technical solution of the present invention, the refrigerant in refrigerant pipeline 20 is formed after the compression of compressor 10
The gaseous coolant of high temperature and pressure, then condensed device progress heat release form the liquid refrigerants of high temperature and pressure, which is located at room
It is interior, indoor temperature is increased, the liquid refrigerants of the high temperature and pressure is mixed by the gas-liquid of the formation medium temperature and medium pressure of first throttling device 51
Close state refrigerant.
Flash vessel 60 positioned at 51 downstream of first throttling device can be depressured refrigerant and realize gas-liquid separation, isolate
Liquid refrigerants after evaporator enter compressor 10, compressor 10 aspirate evaporator in refrigerant vapor and through flash vessel 60
The gaseous coolant isolated, the gaseous coolant isolated through flash vessel 60 play the role of tonifying Qi to compressor 10, with compressor
The low-pressure gas mixing compression of 10 suckings, realizes enthalpy-increasing effect, improves heating capacity under low temperature.
Further, since ambient temperature is relatively low, cause the pressure difference of high-pressure side and low-pressure side larger, excessive is cold
Matchmaker can be stranded in condenser, and technical solution of the present invention is in being additionally arranged compensator 40 on refrigerant pipeline 20, when high-pressure side, liquid is cold
When matchmaker is excessive, in extra liquid refrigerants meeting automatic storage to compensator 40, part refrigerant is dropped through first throttling device 51
Journey is pressed through, solves the problems, such as that liquid refrigerants excessively causes heat exchange efficiency low in First Heat Exchanger 31, improves the air-conditioning system
100 heat efficiency.
In the embodiment of the present invention, the calculation formula of 40 volume V of compensator is：V=(1.5~1.7) × (m2-m1)/ρ；
Quality when m1 is compensator slack tank to be tested；M2 is compensator storage to be tested in the air-conditioning system course of work
There is the gross mass after refrigerant；ρ is the density that liquid refrigerants is saturated in the air-conditioning system course of work.The unit of m1 and m2 is kg, ρ's
Unit is kg/m3.
Above-described embodiment is the selection to 40 volume of compensator.During being somebody's turn to do, first use compensator to be tested as compensator
40 are connected on refrigerant pipeline 20, that is, the balance to be tested is only installed between First Heat Exchanger 31 and first throttling device 51
Tank, it is possible to understand that ground, in order to accurately obtain experimental result, the volume selection of the compensator to be tested is slightly larger, can at least store
The volume for the refrigerant that can be stored in compensator to be tested is estimated in the air-conditioning system course of work.The compensator to be tested includes
Tank body and the tank neck for being connected to tank body and refrigerant pipeline 20, tank neck are equipped with on-off switch.The on-off switch can be used for controlling flat
Whether weighing apparatus tank 40 works, and convenient for testing compensator 40.
Quality when the compensator slack tank to be tested is m1, and when outdoor temperature is 7 DEG C, indoor temperature is controlled at 20 DEG C
Operating mode under, compensator to be tested is not installed and carries out Performance Match experiment, regulating system performance reaches optimum state.Then in
One compensator to be tested with on-off switch is installed between one heat exchanger 31 and first throttling device 51 and carries out Performance Match
Experiment by indoor temperature control under 20 DEG C of operating mode, on-off switch is opened, and adjust and be when outdoor temperature is -20 DEG C
System performance reaches optimum state, is then switched off the on-off switch, removes compensator to be tested and weigh, and it is to be tested flat to obtain this
The overall quality of weighing apparatus tank is m2.(m2-m1) it is refrigerant quality in the compensator to be tested, ρ is -20 DEG C of saturated liquid refrigerants
Density.
After after tested, chooses the compensator 40 that volume is V and is installed between First Heat Exchanger 31 and first throttling device 51,
So as to improve the heat efficiency of the air-conditioning system 100.
Specifically, which is being obtained as a result, in test process by repeatedly testing, and can be incited somebody to action
Air-conditioning system is as more severe and change in more apparent environment, to obtain more reliable test number range.It is practical
In application process, the coefficient needs to be more than 1.5 to ensure that air-conditioning system running environment is more severe when the volume of compensator 40 is chosen
When the compensator 40 can also satisfy the use demand, it is possible to understand that ground, the coefficient can also be more than 1.7 so that the use of compensator more
Add reliable.It is chosen in advance according to the limitation of installation space and the actual motion demand of air-conditioning system, while for the volume of compensator
Certain error range is stayed, coefficient control can be then balanced to the preferred volume model of tank 40 in 1.5~1.7 ranges
It encloses.
1.5~1.7 coefficient can guarantee the volume of selected compensator 40 compared with actual storage refrigerant in above-mentioned test
Volume is big, to improve the ability that compensator 40 in actual application balances pressure, and makes compensator 40 in air-conditioning system 100
In it is compact-sized, will not result in waste of resources.
The volume of compensator 40 is 30%~40% of refrigerant total volume in system after after tested.The total volume of the refrigerant is
Produce the air conditioner refrigerant pipeline 20 and all members connected by refrigerant pipeline 20 into above-mentioned air-conditioning system 100 in the process
The total volume of the refrigerant injected in device.
It is to be appreciated that 40 volume of compensator is excessive and the air-conditioning system 100 is caused to tie during the installation process in order to prevent
Structure is arranged unreasonable, and in an embodiment, the quantity of compensator 40 is multiple, and multiple compensators 40 are connected to refrigerant side by side successively
Pipeline 20.The compensator 40 of multiple small volumes can be chosen according to the case where practical application, and be connected to refrigerant side by side successively
On pipeline 20, so that the air-conditioning system 100 is compacter in the installation in air conditioner so that the overall structure of air conditioner compared with
Small, use scope is wider.
Further, air-conditioning system further includes tonifying Qi pipeline 70 and increasing enthalpy switch 71, and the tonifying Qi pipeline 70 connection tonifying Qi goes out
Mouth and tonifying Qi entrance 11, increasing enthalpy switch 71 are installed on tonifying Qi pipeline 70.
The increasing enthalpy switch 71 is on-off valve, to control whether to carry out tonifying Qi to compressor 10, is imitated when compressor 10 works
It when rate is higher, can select to close the increasing enthalpy switch 71, to stop the use to flash vessel 60.
The flash vessel 60 is specially flash tank, and since the boiling point of fluid is related with pressure, fluid is entering flash tank process
In can be depressured rapidly the vaporization so that fluid can boil rapidly in flash tank, and carry out gas-liquid separation.In order to further increase
The working efficiency of compressor 10 in the air-conditioning system 100, is arranged multiple flash vessels 60, multiple flash vessels in air-conditioning system 100
60 are sequentially connected on the refrigerant pipeline 20 between first throttling device 51 and the second heat exchanger 32, and the benefit of each flash vessel 60
Gas outlet is connected to the tonifying Qi entrance 11 of compressor 10.
Specifically, when for tool there are two when flash vessel 60, the refrigerant by first throttling device 51 is introduced into one in the system
The gas-liquid separation that first order decompression and the first order is carried out in a flash vessel 60, the cold media gas during being somebody's turn to do after the gasification of part refrigerant
Tonifying Qi outlet through the flash vessel 60 enters in compressor 10, and the refrigerant liquid during being somebody's turn to do in flash vessel 60 is through refrigerant pipeline 20
Into in next flash vessel 60, the gas-liquid separation of second level decompression and the second level is carried out, during being somebody's turn to do after the gasification of part refrigerant
Tonifying Qi outlet of the cold media gas through the flash vessel 60 enters in compressor 10, and the refrigerant liquid during being somebody's turn to do in flash vessel 60 is through cold
Matchmaker's pipeline 20 enters in second heat exchanger 32 in downstream.
It is to be appreciated that the effect of in order to improve compressor 10, can pacify according to aforesaid way be arranged multiple flash vessels 60 with
Optimize the mounting structure of the air-conditioning system 100, a larger flash vessel of volume 60 can also be only set to simplify installation process.
When the air-conditioning system 100 has multiple flash vessels 60, the tonifying Qi outlet of each flash vessel 60 and compressor 10
Tonifying Qi entrance 11 is connected to by tonifying Qi pipeline, and one multiple-way valve of installation at the tonifying Qi entrance 11 of compressor 10 is specifically as follows,
To be connected to multiple tonifying Qi pipelines.Preferably, each tonifying Qi pipeline is respectively mounted an increasing enthalpy valve, and further, which opens
Degree can be adjusted according to service condition, so as to each flash vessel 60 to gas during the tonifying Qi of compressor 10
Flow and pressure are adjusted.
Further, air-conditioning system further includes second throttling device 52, and second throttling device 52 is installed on refrigerant pipeline 20,
And between flash vessel 60 and the second heat exchanger 32.
The second throttling device 52 can further depressurize the refrigerant in refrigerant pipeline 20 so that cooling medium liquefaction is more
Fully, low into the refrigerant temperature of the second heat exchanger 32, it can more fully be exchanged heat in outside air, to improve the air-conditioning
The heating efficiency of system 100.
First throttling device 51 is electric expansion valve or capillary in technical solution of the present invention；
And/or second throttling device 52 is electric expansion valve or capillary.Namely first throttling device 51 and second saves
It can be electric expansion valve simultaneously to flow device 52, can also be capillary simultaneously, naturally it is also possible to be chosen for electronic expansion respectively
Valve or capillary.It can accordingly be chosen according to actual use situation.
The compressor 10 is air injection enthalpy-increasing compressor 10, and specially rotator type compresses, or scroll compressor 10.
There are two air inlet and a gas outlets for the compressor 10 tool.One air inlet is connected to the second heat exchanger 32, through 32 shape of the second heat exchanger
At low-pressure gaseous refrigerant by refrigerant pipeline 20 enter compressor 10；Another air inlet is above-mentioned tonifying Qi entrance, through flash vessel 60
The gaseous high pressure refrigerant of separation enters compressor 10 by the tonifying Qi entrance.Compressor 10 by the low-pressure gas sucked by evaporator and
Compression is in the gaseous coolant of high temperature and pressure and is expelled to refrigerant through gas outlet the gas of the higher pressure entered by flash vessel 60 jointly
In pipeline 20, to improve the efficiency of compressor 10.
Four-way valve 80 is provided on refrigerant pipeline 20, which is connected to an air inlet of compressor 10, gas outlet
In refrigerant pipeline.The air-conditioning system is applied to heat pump air conditioner, which can be freezed or be heated, and adjusting is passed through
Switching of the four-way valve 80 to change flow direction of the refrigerant in refrigerant pipeline 20 to realize between refrigeration and heating.
The present invention also proposes that a kind of air conditioner (not shown), the air conditioner include air-conditioning system 100, the air-conditioning system 100
Concrete structure with reference to above-described embodiment, since this air conditioner uses whole technical solutions of above-mentioned all embodiments,
At least all advantageous effects caused by the technical solution with above-described embodiment, this is no longer going to repeat them.The air conditioner is
Heat pump air conditioner.
Air conditioner has above-mentioned air-conditioning system 100, to improve the heating energy efficiency ratio of air conditioner at low temperatures, protects
Outdoor temperature has been demonstrate,proved still normally to heat in the case of -25 °.When outdoor temperature is not less than -20 DEG C, heating capacity is not less than
Nominal heating capacity.
When outdoor temperature is -12 DEG C, and adjusting indoor temperature reaches 20 DEG C, the heating energy efficiency ratio of air conditioner, which can reach, to be more than
More than 3.60；When outdoor temperature is -20 DEG C, and adjusting indoor temperature reaches 20 DEG C, the heating energy efficiency ratio of air conditioner can reach big
It is more more economical than common heating system energy saving in 2.00 or more.
Fig. 2 show cycle pressure-enthalpy diagram (p-h figures) of the air-conditioning system course of work.Ordinate p indicates pressure, abscissa h
Enthalpy is compared in expression.Arcuation curve represents all saturated liquid refrigerants of refrigerant and the state for being saturated gaseous coolant, on curve
Peak is critical point, is the separation for being saturated gaseous coolant and saturated liquid refrigerant.The curve on its left side is that saturated liquid is cold
The curve of matchmaker's line, its right side is saturation gaseous coolant line.Region in arcuation line is two-phase section, the saturated liquid refrigerant line left side
Region is subcooled liquid area, is superheated vapor area on the right of saturation gaseous coolant line, more than critical point is supercritical region.Wherein, B is
Cycle pressure-enthalpy diagram of flash vessel and compensator is not added, A is that technical solution of the present invention is additionally arranged following for flash vessel and compensator
Ring pressure-enthalpy diagram.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
In the scope of patent protection that other related technical areas are included in the present invention.
Claims (10)
1. a kind of air-conditioning system, which is characterized in that the air-conditioning system includes：Refrigerant pipeline and by the refrigerant pipeline successively
Compressor, First Heat Exchanger, compensator, first throttling device, flash vessel and the second heat exchanger being connected by circulation；
The flash vessel is exported with tonifying Qi, and the compressor has tonifying Qi entrance, and tonifying Qi described in the tonifying Qi outlet enters
Mouthful；
Refrigerant in refrigerant pipeline enters the compensator after the compressor compresses through First Heat Exchanger, in the compensator
Refrigerant at least partly through first throttling device enter the flash vessel, refrigerant isolated in the flash vessel gaseous coolant and
Liquid refrigerants, the gaseous coolant isolated enter the compressor through tonifying Qi outlet and tonifying Qi entrance, described to isolate
Liquid refrigerants enters the compressor through the second heat exchanger.
2. air-conditioning system as described in claim 1, which is characterized in that the calculation formula of the balance tank volume V is：V=
(1.5~1.7) × (m2-m1)/ρ；
Quality when m1 is compensator slack tank to be tested；M2 is compensator storage to be tested in the air-conditioning system course of work
There is the gross mass after refrigerant；ρ is the density that liquid refrigerants is saturated in the air-conditioning system course of work.
3. air-conditioning system as described in claim 1, which is characterized in that the volume of the compensator is refrigerant total volume in system
30%~40%.
4. the air-conditioning system as described in any one of claims 1 to 3, which is characterized in that the air-conditioning system further includes mending
Air pipe and increasing enthalpy switch, tonifying Qi outlet and the tonifying Qi entrance described in the tonifying Qi pipeline connection, the increasing enthalpy switch installation
In the tonifying Qi pipeline.
5. air-conditioning system as claimed in claim 4, which is characterized in that the air-conditioning system includes multiple flash vessels, more
A flash vessel is sequentially connected on the refrigerant pipeline between first throttling device and the second heat exchanger, and each flash distillation
The tonifying Qi outlet of device is connected to the tonifying Qi entrance of the compressor.
6. air-conditioning system as described in claim 1, which is characterized in that the First Heat Exchanger is condenser, and described second changes
Hot device is evaporator.
7. air-conditioning system as described in claim 1, which is characterized in that the air-conditioning system further includes second throttling device, institute
It states second throttling device and is installed on the refrigerant pipeline, and between the flash vessel and the second heat exchanger.
8. air-conditioning system as claimed in claim 7, which is characterized in that the first throttling device is electric expansion valve or capillary
Pipe；
And/or the second throttling device is electric expansion valve or capillary.
9. air-conditioning system as described in claim 1, which is characterized in that the compressor is rotor-type compressor.
10. a kind of air conditioner, which is characterized in that the air conditioner includes air-conditioning system as described in any one of claim 1 to 9
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810686827.0A CN108800384B (en) | 2018-06-27 | 2018-06-27 | Air conditioning system and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810686827.0A CN108800384B (en) | 2018-06-27 | 2018-06-27 | Air conditioning system and air conditioner |
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| Publication Number | Publication Date |
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| CN108800384A true CN108800384A (en) | 2018-11-13 |
| CN108800384B CN108800384B (en) | 2020-09-22 |
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| CN201810686827.0A Active CN108800384B (en) | 2018-06-27 | 2018-06-27 | Air conditioning system and air conditioner |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN110486967A (en) * | 2019-08-27 | 2019-11-22 | 珠海凌达压缩机有限公司 | A kind of air-conditioning system and its control method |
| CN111502990A (en) * | 2020-03-31 | 2020-08-07 | 珠海格力电器股份有限公司 | Single-stage enthalpy-increasing rotor compressor and air conditioner with same |
| CN111502990B (en) * | 2020-03-31 | 2021-06-29 | 珠海格力电器股份有限公司 | Single-stage enthalpy-increasing rotor compressor and air conditioner with same |
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| CN111550944B (en) * | 2020-04-26 | 2024-03-29 | 珠海格力电器股份有限公司 | Triple throttling enthalpy-increasing double-condensation refrigerating system, air conditioner and control method |
| CN112728729A (en) * | 2021-02-23 | 2021-04-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Air conditioning system and air conditioner with same |
| CN114739115A (en) * | 2022-05-17 | 2022-07-12 | 中船重工鹏力（南京）超低温技术有限公司 | Low-temperature gas liquefying device |
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