CN106949657A - Air-conditioning system and its control method with supercooling apparatus - Google Patents
Air-conditioning system and its control method with supercooling apparatus Download PDFInfo
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- CN106949657A CN106949657A CN201710145653.2A CN201710145653A CN106949657A CN 106949657 A CN106949657 A CN 106949657A CN 201710145653 A CN201710145653 A CN 201710145653A CN 106949657 A CN106949657 A CN 106949657A
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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
- F25B31/00—Compressor arrangements
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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
- F25B40/00—Subcoolers, desuperheaters or superheaters
- F25B40/02—Subcoolers
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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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
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
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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
- F25B2500/00—Problems to be solved
- F25B2500/12—Sound
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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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2103—Temperatures near a heat exchanger
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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)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air-conditioning system and its control method with supercooling apparatus, wherein, the air-conditioning system with supercooling apparatus includes supercooling apparatus, and main refrigerant pipeline and the main refrigerant pipeline loop of connection indoor apparatus of air conditioner and air-conditioner outdoor unit, the supercooling apparatus included cold heat exchanger, the assisting restriction choke being sequentially connected in series, supplementary heat exchanger and auxiliary compressor, the cold heat exchanger of crossing has first passage and second channel, the first passage is connected with the main refrigerant pipeline loop, the import of the second channel is connected with the outlet of the assisting restriction choke, the outlet of the second channel is connected by tie point with the gas returning port of the auxiliary compressor, the main refrigerant pipeline is connected by the second branch road with the gas returning port of the auxiliary compressor.Air-conditioning system and its control method proposed by the present invention, which realize the air-conditioning system in the case where the refrigerant in ensureing liquid pipe is liquid phase, has higher efficiency.
Description
Technical field
The present invention relates to air-conditioning equipment field, more particularly to a kind of air-conditioning system and its control method with supercooling apparatus.
Background technology
Air-conditioning system, if the refrigerant in liquid pipe is gas-liquid mixture phase, on the one hand can be caused larger when pipe arrangement is longer
The pressure loss, cause the ability of air-conditioning system, efficiency to decline；On the other hand when by the throttling of indoor set throttle part, meeting
Larger noise is produced, comfort is influenceed.Major part producer can be protected by increasing supercooling apparatus to air-conditioning system at present
It is liquid phase to demonstrate,prove the refrigerant in liquid pipe, and it is remaining cold to cool down that the refrigerant after outdoor air cooling heat exchanger typically is drawn into a part
Matchmaker is to ensure that liquid refrigerants has certain degree of supercooling, but this method is as a result of condensed refrigerant, air-conditioning system sheet
Body is less efficient.
The content of the invention
It is a primary object of the present invention to provide a kind of air-conditioning system and its control method with supercooling apparatus, it is intended to solve
The less efficient technical problem of the existing air-conditioning system with supercooling apparatus.
To achieve the above object, the air-conditioning system with supercooling apparatus that the present invention is provided includes supercooling apparatus, and connection
The main refrigerant pipeline and main refrigerant pipeline loop of indoor apparatus of air conditioner and air-conditioner outdoor unit, the supercooling apparatus include supercooling and exchanged heat
Device, the assisting restriction choke being sequentially connected in series, supplementary heat exchanger and auxiliary compressor, the cold heat exchanger of crossing have first passage and the
Two passages, the first passage is connected with the main refrigerant pipeline loop, and the import of the second channel is saved with the auxiliary
The outlet of stream device is connected, and the outlet of the second channel is connected by tie point with the gas returning port of the auxiliary compressor
Logical, the main refrigerant pipeline is connected by the second branch road with the gas returning port of the auxiliary compressor.
Preferably, the auxiliary compressor is constant speed compressor or frequency-changeable compressor.
Preferably, the air-conditioner outdoor unit includes gas side stop valve, four-way valve, gas-liquid separator and main compressor, described
Gas side stop valve is connected with the evaporator port of the four-way valve, the import of second branch road and the air-breathing of the four-way valve
Pipe port is connected, and the import of the tie point is connected with the outlet of the second channel, the outlet of the tie point
It is connected after collecting with the outlet of second branch road by the 3rd branch road with the import of the gas-liquid separator, the gas-liquid point
Outlet from device is connected with the gas returning port of the main compressor and the gas returning port of the auxiliary compressor respectively, the main compression
The exhaust outlet of machine is connected with the exhaust port of the four-way valve.
Preferably, the air-conditioner outdoor unit also include liquid side stop valve and main heat exchanger, the main heat exchanger arrival end with
The condensation port of the four-way valve is connected, and main throttling is provided between the main heat exchanger port of export and liquid side stop valve
Device and check valve, the main flow controller and the check valve are arranged in parallel.
Preferably, oil is additionally provided between the exhaust outlet of the main compressor and the exhaust port of the four-way valve to separate
Device.
Preferably, be provided with the oil eliminator return line respectively with the main compressor and the auxiliary compressor
Gas returning port be connected.
To achieve the above object, the present invention also provides a kind of control method of the air-conditioning system with supercooling apparatus, the band
The air-conditioning system of supercooling apparatus is the air-conditioning system with supercooling apparatus described in any of the above-described, and the control method includes：
Step S1, when air conditioner refrigerating is run, opens the air-conditioner outdoor unit；
Step S2, detects the degree of supercooling of the first passage outlet；
Step S3, when the degree of supercooling is less than the first default degree of supercooling, opens the supercooling apparatus, cold from the master
The part refrigerant of matchmaker's pipeline is circulated in the supercooling apparatus, makes the refrigerant of the second channel to the refrigerant of the first passage
Cooled down.
Preferably, the auxiliary compressor is constant speed compressor, is also included after the step S3：
Step S4, when detect duration of the degree of supercooling not less than the second default degree of supercooling reach first it is default when
Between when, close the supercooling apparatus, wherein, the described second default degree of supercooling is more than the described first default degree of supercooling.
Preferably, the auxiliary compressor is frequency-changeable compressor, is also included after the step S3：
Step S5, controls the auxiliary compressor according to the preset time of predeterminated frequency continuous service second；
Step S61, when detecting the degree of supercooling not less than the described second default degree of supercooling, controls the auxiliary compression
Machine reduces the first predeterminated frequency value every the 3rd preset time；
Step S62, when detecting the degree of supercooling less than the described first default degree of supercooling, controls the auxiliary compressor
The second predeterminated frequency value is raised every the 4th preset time.
Preferably, the frequency of the auxiliary compressor includes also including after lower limit and higher limit, the step S61：
Step S71, when the frequency of the auxiliary compressor is reduced to lower limit, the degree of supercooling is still not less than described second
During default degree of supercooling, then the supercooling apparatus is closed；
Also include after the step S62：
Step S72, when the frequency of the auxiliary compressor is increased to higher limit, the degree of supercooling is pre- still less than described first
If during degree of supercooling, then controlling the auxiliary compressor to be run according to the higher limit.
In technical scheme proposed by the present invention, when air conditioner refrigerating is run, between indoor apparatus of air conditioner and air-conditioner outdoor unit
A part of gaseous coolant is simply introduced supercooling apparatus, this part refrigerant is via auxiliary by refrigerant circulation as traditional system
Become low temperature refrigerant after helping compressor, supplementary heat exchanger and assisting restriction choke, low temperature refrigerant is to via master in cold heat exchanger is crossed
The liquid refrigerants of heat exchanger is cooled down, and the liquid refrigerants after cooling has larger degree of supercooling, ensure that inflow indoor set
Refrigerant be liquid.In addition, with it is general cross cooling system compared with, the present invention is without using by the cold of outdoor air cooling heat exchanger
Matchmaker, air-conditioning system has higher efficiency.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the structural representation of air-conditioning system one embodiment of the invention with supercooling apparatus；
Fig. 2 is the schematic flow sheet of the control method first embodiment of the air-conditioning system of the invention with supercooling apparatus；
Fig. 3 is the schematic flow sheet of the control method second embodiment of the air-conditioning system of the invention with supercooling apparatus；
Fig. 4 is the schematic flow sheet of the control method 3rd embodiment of the air-conditioning system of the invention with supercooling apparatus.
Drawing reference numeral explanation：
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
It is to be appreciated that institute is directional in the embodiment of the present invention indicates that (such as up, down, left, right, before and after ...) is only used
In explaining relative position relation, motion conditions under a certain particular pose (as shown in drawings) between each part etc., if should
When particular pose changes, then directionality indicates also correspondingly therewith to change.
In addition, in the present invention such as relating to the description of " first ", " second " etc. be only used for describe purpose, and it is not intended that
Indicate or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ",
At least one this feature can be expressed or be implicitly included to the feature of " second ".In the description of the invention, " multiple " contain
Justice is at least two, such as two, three etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " connection ", " fixation " etc. should be interpreted broadly,
For example, " fixation " can be fixedly connected or be detachably connected, or integrally；Can be mechanically connect or
Electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, can be the connection or two of two element internals
The interaction relationship of individual element, unless otherwise clear and definite restriction.For the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In addition, the technical scheme between each embodiment of the invention can be combined with each other, but must be general with this area
Logical technical staff can be implemented as basis, when the combination appearance of technical scheme is conflicting or can not realize it will be understood that this
The combination of technical scheme is not present, also not within the protection domain of application claims.
The present invention proposes a kind of air-conditioning system with supercooling apparatus.
Fig. 1 is refer to, in the present embodiment, the air-conditioning system with supercooling apparatus includes supercooling apparatus 300, and connection
The main refrigerant pipeline 100 and main refrigerant pipeline loop 200 of indoor apparatus of air conditioner and air-conditioner outdoor unit, the supercooling apparatus 300 include
Cold heat exchanger 310, the assisting restriction choke being sequentially connected in series 320, supplementary heat exchanger 330 and auxiliary compressor 340 are crossed, the supercooling is changed
Hot device 310 has first passage 311 and second channel 312, the first passage 311 and the main phase of refrigerant pipeline loop 200
Connection, the import of the second channel 312 is connected with the outlet of the assisting restriction choke 320, and the second channel 312 goes out
Mouth is connected by tie point 350 with the gas returning port of the auxiliary compressor 340, and the main refrigerant pipeline 100 passes through second
Branch road 360 is connected with the gas returning port of the auxiliary compressor 340.
In technical scheme proposed by the present invention, when air conditioner refrigerating is run, between indoor apparatus of air conditioner and air-conditioner outdoor unit
Refrigerant circulation as traditional system, simply by a part of gaseous coolant introduce supercooling apparatus 300, this part refrigerant via
Become low temperature refrigerant after auxiliary compressor 340, supplementary heat exchanger 330 and assisting restriction choke 320, it is low in cold heat exchanger 310 is crossed
Warm refrigerant is cooled down to the liquid refrigerants via main heat exchanger 420, and the liquid refrigerants after cooling has larger degree of supercooling, energy
It is enough to ensure that the refrigerant for flowing into indoor set is liquid.In addition, with it is general cross cooling system compared with, the present invention is without using by outdoor
The refrigerant of air cooling heat exchanger, air-conditioning system has higher efficiency.
It should be noted that the air-conditioning system with supercooling apparatus include outdoor machine system part, indoor set system part and
Pipeline portions, outdoor machine system can include the multiple air-conditioner outdoor units being connected in parallel, and indoor set system can also include parallel connection
Multiple indoor apparatus of air conditioner, pipeline portions include main refrigerant pipeline 100 and main refrigerant pipeline loop 200, each air-conditioner outdoor unit
Refrigerant pipeline collect and be connected to after parallel connection on main refrigerant pipeline 100 and main refrigerant pipeline loop 200, each indoor apparatus of air conditioner
Refrigerant pipeline is also connected on main refrigerant pipeline 100 and main refrigerant pipeline loop 200, makes outdoor machine system and indoor set system logical
Cross main refrigerant pipeline 100 and main refrigerant pipeline loop 200 constitutes a complete circulatory system.For this combined air conditioners system
System, it is only necessary to set a supercooling apparatus 300, draws other a part of refrigerants to supercooling apparatus 300 from main refrigerant pipeline 100
The refrigerant that circulation can be achieved to carry out the refrigerant in main refrigerant pipeline loop 200 in heat exchange, main refrigerant pipeline loop 200 is released
Heat flows to indoor set, efficiently solves refrigerant and occurs flash phenomenon before heat exchanger is got in, so as to reduce indoor set
Noise.Wherein, it is plate type heat exchanger or double pipe heat exchanger to cross cold heat exchanger 310.
Preferably, the auxiliary compressor 340 is constant speed compressor or frequency-changeable compressor.Auxiliary compressor 340 can be with
Using the compressor of two kinds of forms of frequency conversion or constant speed, constant speed compressor controls main refrigerant pipeline loop 200 by start and stop
Refrigerant degree of supercooling, frequency-changeable compressor controls the refrigerant in main refrigerant pipeline loop 200 by frequency regulation and start and stop two ways
Degree of supercooling.
In further embodiment, the air-conditioner outdoor unit includes gas side stop valve 490, four-way valve 430, gas-liquid point
From device 440 and main compressor 410, gas side stop valve 490 is connected with the evaporator port of the four-way valve 430, described
The import of second branch road 360 is connected with the air-breathing pipe port of the four-way valve 430, the import of the tie point 350 and institute
The outlet for stating second channel 312 is connected, after the outlet of the tie point 350 collects with the outlet of second branch road 360
Be connected by the 3rd branch road 370 with the import of the gas-liquid separator 440, the outlet of the gas-liquid separator 440 respectively with
The gas returning port of the main compressor 410 is connected with the gas returning port of the auxiliary compressor 340, the row of the main compressor 410
Gas port is connected with the exhaust port of the four-way valve 430.
Wherein, gas coolant can be separated with liquid refrigerants using gas-liquid separator 440, prevents that liquid refrigerants from entering
Enter main compressor 410, and cause the phenomenon of liquid refrigerants liquid hazards main compressor 410, so as to improve the work of air-conditioner outdoor unit
Make reliability.The gaseous coolant of main coolant loop flows to gas-liquid separator 440, gas-liquid point through the branch road 360 of four-way valve 430 and second
Outlet from device 440 is connected with the gas returning port of main compressor 410 and the gas returning port of auxiliary compressor 340 respectively by two pipelines
It is logical, so that the refrigerant for carrying out autonomous refrigerant pipeline 100 is divided into two-way, flowed all the way via main compressor 410, main heat exchanger 420
To main refrigerant pipeline loop 200, another road flows through auxiliary compressor 340, supplementary heat exchanger 330 and assisting restriction choke 320 successively,
Second channel 312 is flowed into after the throttling cooling of assisting restriction choke 320, now, the refrigerant in second channel 312 is by assisting restriction choke
320 throttlings cool into the liquid refrigerants of low-temp low-pressure, lower than refrigerant temperature in first passage 311, therefore, second channel 312
It is indoor that the refrigerant that interior refrigerant is carried out with the refrigerant in first passage 311 in heat exchange, first passage 311 releases heat flow direction
Machine, efficiently solves refrigerant and occurs flash phenomenon before heat exchanger is got in, meanwhile, the refrigerant in second channel 312 is inhaled
Receive after heat, gas-liquid separator 440 is returned to by tie point 350, the degree of superheat of air-conditioning system can be improved.Need explanation
, the branch road 360 of tie point 350 and second can be by the import phase of the 3rd branch road 370 and gas-liquid separator 440 after collecting
The one end of second branch road 360, directly can also be connected, the other end and gas-liquid separation by connection with the air-breathing pipe port of four-way valve 430
Device 440 is connected, and the outlet of tie point 350 is connected with the arbitrary node of the second branch road 360.
Preferably, the air-conditioner outdoor unit also includes liquid side stop valve 480 and main heat exchanger 420, the main heat exchanger 420
Arrival end is connected with the condensation port of the four-way valve 430, the port of export of main heat exchanger 420 and liquid side stop valve
Main flow controller 450 and check valve 460 are provided between 480, the main flow controller 450 and the check valve 460 are arranged in parallel.It is empty
When modulating cold operation, check valve 460 is opened, the refrigerant of the port of export of main heat exchanger 420 flows to the cut-off of liquid side via check valve 460
Valve 480, now, main flow controller 450 do not work；When air-conditioning heating is run, check valve 460 is closed, from indoor set
Refrigerant flows to the port of export of main heat exchanger 420 after liquid side stop valve 480 and main flow controller 450.Main flow controller 450 and auxiliary throttle
Device 320 is capillary or electric expansion valve or heating power expansion valve.
Preferably, referring once again to Fig. 1, the exhaust port of the exhaust outlet of the main compressor 410 and the four-way valve 430
Between be additionally provided with oil eliminator 470.Oil eliminator 470 can separate the mixture of refrigerant and oil from main compressor 410,
So that flow to the refrigerant of main heat exchanger 420 not oil-containing there is provided the reliability of system operation.
Further, be provided with the oil eliminator 470 return line respectively with the main compressor 410 and described auxiliary
The gas returning port of compressor 340 is helped to be connected.Main compressor 410 back is transported the oil in oil eliminator 470 and auxiliary by return line
Helping compressor 340 can be recycled lubricating oil etc., it is not necessary to extra to main compressor 410 and auxiliary compressor 340
Middle addition lubricating oil etc..
The present invention also provides a kind of control method of the air-conditioning system with supercooling apparatus, the air-conditioning system with supercooling apparatus
Unite as the air-conditioning system with supercooling apparatus described in any of the above-described, reference picture 2, Fig. 2 is the air-conditioning of the invention with supercooling apparatus
The schematic flow sheet of the control method first embodiment of system, the control method includes：
Step S100, when air conditioner refrigerating is run, opens the air-conditioner outdoor unit；
Step S200, detects the degree of supercooling of the first passage outlet；
Step S300, when the degree of supercooling is less than the first default degree of supercooling, opens the supercooling apparatus, from the master
The part refrigerant of refrigerant pipeline is circulated in the supercooling apparatus, makes the refrigerant of the second channel to the cold of the first passage
Matchmaker is cooled down.
In technical scheme proposed by the present invention, air-conditioning system is opened after refrigerating operaton, and air-conditioner outdoor unit starts, outdoor unit fortune
Degree of supercooling of the main refrigerant pipeline loop upstream by the refrigerant of cold heat exchanger is detected after row is stable.When the degree of supercooling is pre- less than first
If during degree of supercooling, a part of gaseous coolant opened on supercooling apparatus, main refrigerant pipeline enters refrigerant after auxiliary compressor, compression
Into supplementary heat exchanger, the refrigerant after heat exchange enters supercooling heat exchanger by aiding in after throttle part throttling, to main refrigerant pipeline
The refrigerant in loop is cooled down so that it is guaranteed that the refrigerant for flowing to indoor set is liquid, because refrigerant when effectively reduction indoor set is run
The noise produced is flowed, comfort is improved, in addition, the refrigerant compared with high supercooling degree can effectively improve the efficiency of air-conditioning system.
Further, reference picture 3, Fig. 3 is the control method second embodiment of the air-conditioning system of the invention with supercooling apparatus
Schematic flow sheet, based on above-mentioned first embodiment, in the present embodiment, the auxiliary compressor is constant speed compressor, described
Also include after step S300：
Step S400, reaches that first presets when detecting duration of the degree of supercooling not less than the second default degree of supercooling
During the time, the supercooling apparatus is closed, wherein, the described second default degree of supercooling is more than the described first default degree of supercooling.
In the present embodiment, auxiliary compressor uses constant speed compressor, and the cost of constant speed compressor is relatively low.Auxiliary compressor is opened
Run always according to fixed frequency after opening, when degree of supercooling the continuing not less than the second preset pressure for detecting first passage outlet
When time reaches the first preset time, the degree of supercooling for illustrating the refrigerant for flowing to indoor set is enough, now, closes supercooling apparatus
Stopped the heat exchange of refrigerant in cold heat exchanger, it is necessary to which explanation, is less than second when the degree of supercooling is more than the first default degree of supercooling
During default degree of supercooling, it is ensured that the refrigerant for flowing to indoor set is liquid, also can guarantee that the refrigerating capacity of indoor set, first preset
The preferred value of cold degree is 5 degree, and the preferred value of the second default degree of supercooling is 20 degree.
Further, reference picture 4, Fig. 4 is the control method 3rd embodiment of the air-conditioning system of the invention with supercooling apparatus
Schematic flow sheet, based on above-mentioned first embodiment, in the present embodiment, the auxiliary compressor is frequency-changeable compressor, described
Also include after step S300：
Step S500, controls the auxiliary compressor according to the preset time of predeterminated frequency continuous service second；
Step S601, when detecting the degree of supercooling not less than the described second default degree of supercooling, controls the auxiliary pressure
Contracting machine reduces the first predeterminated frequency value every the 3rd preset time；
Step S602, when detecting the degree of supercooling less than the described first default degree of supercooling, controls the auxiliary compression
Machine raises the second predeterminated frequency value every the 4th preset time.
In the present embodiment, auxiliary compressor uses frequency-changeable compressor, although the cost of frequency-changeable compressor is compared with constant speed compressor
Height, but the degree of supercooling that frequency-changeable compressor can be exported according to first passage automatically adjusts frequency, can also reduce auxiliary compression
The number of times of machine start and stop, saves the energy.Auxiliary compressor ran a period of time according to predeterminated frequency before this after opening, and can stablize auxiliary
The operation of compressor is helped, the degree of supercooling of first passage outlet is then detected.If degree of supercooling is greater than or equal to the second default supercooling
Degree, it is liquid to illustrate the refrigerant for flowing to indoor set, now controls auxiliary compressor to reduce certain frequency at regular intervals, such as
2 hertz are reduced within every 2 minutes, until degree of supercooling is dropped to below the second preset pressure；If degree of supercooling is less than the first default degree of supercooling,
The degree of supercooling for illustrating refrigerant now via main heat exchanger not enough, is likely to occur shwoot, this time control before heat exchanger is got in
Auxiliary compressor processed raises certain frequency at regular intervals, such as raises 2 hertz within every 2 minutes, leads to so as to improve and flow through second
Refrigerant in the refrigerant speed in road, quick cooling first passage, improves the degree of supercooling for the refrigerant for flowing through first passage, it is necessary to illustrate
, point of the no priority of step S601 and step S602 order.
Further, on the basis of above-mentioned 3rd embodiment, the frequency of the auxiliary compressor includes lower limit and upper
Also include after limit value, the step S601：
Step S701, when the frequency of the auxiliary compressor is reduced to lower limit, the degree of supercooling is still not less than described
During two default degree of supercoolings, then the supercooling apparatus is closed；
Also include after the step S602：
Step S702, when the frequency of the auxiliary compressor is increased to higher limit, the degree of supercooling is still less than described first
During default degree of supercooling, then the auxiliary compressor is controlled to be run according to the higher limit.
Specifically, the frequency of frequency-changeable compressor possesses higher limit and lower limit.When the degree of supercooling that first passage is exported is higher than
Or during equal to the second degree of supercooling, auxiliary compressor reduces the first predeterminated frequency value every the 3rd preset time, if auxiliary compressor
Low-limit frequency is had been reduced to, the degree of supercooling of first passage outlet is not dropped to still below the second default degree of supercooling, then explanation flows to room
The refrigerant of interior heat exchanger is liquid, now closes auxiliary compressor.When the degree of supercooling that first passage is exported was preset less than first
Cold when spending, auxiliary compressor reduces the second predeterminated frequency value every the 4th preset time, if auxiliary compressor has been raised to highest
Frequency, the degree of supercooling of first passage outlet then illustrates the degree of supercooling of the refrigerant via main heat exchanger still less than the first preset pressure
Not enough, shwoot is likely to occur before heat exchanger is got in, now auxiliary compressor is run with as early as possible to second according to higher limit
Passage supplement low temperature refrigerant is so as to cool down the refrigerant in first passage.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of air-conditioning system with supercooling apparatus, it is characterised in that including supercooling apparatus, and connection indoor apparatus of air conditioner and sky
Adjust the main refrigerant pipeline of outdoor unit and main refrigerant pipeline loop, the supercooling apparatus included cold heat exchanger, be sequentially connected in series it is auxiliary
Flow controller, supplementary heat exchanger and auxiliary compressor are helped, the cold heat exchanger of crossing has first passage and second channel, described first
Passage is connected with the main refrigerant pipeline loop, and the import of the second channel is connected with the outlet of the assisting restriction choke
Logical, the outlet of the second channel is connected by tie point with the gas returning port of the auxiliary compressor, the main refrigerant pipe
Road is connected by the second branch road with the gas returning port of the auxiliary compressor.
2. the air-conditioning system as claimed in claim 1 with supercooling apparatus, it is characterised in that the auxiliary compressor is constant speed pressure
Contracting machine or frequency-changeable compressor.
3. the air-conditioning system as claimed in claim 1 with supercooling apparatus, it is characterised in that the air-conditioner outdoor unit includes gas side
Stop valve, four-way valve, gas-liquid separator and main compressor, gas side stop valve are connected with the evaporator port of the four-way valve
Logical, the import of second branch road is connected with the air-breathing pipe port of the four-way valve, the import of the tie point with it is described
The outlet of second channel is connected, outlet and the outlet of second branch road of the tie point collect after by the 3rd branch road
Import with the gas-liquid separator is connected, the outlet of the gas-liquid separator respectively with the gas returning port of the main compressor and
The gas returning port of the auxiliary compressor is connected, and the exhaust outlet of the main compressor is connected with the exhaust port of the four-way valve
It is logical.
4. the air-conditioning system as claimed in claim 3 with supercooling apparatus, it is characterised in that the air-conditioner outdoor unit also includes liquid
Side stop valve and main heat exchanger, the main heat exchanger arrival end are connected with the condensation port of the four-way valve, the main heat exchange
Main flow controller and check valve are provided between the device port of export and liquid side stop valve, the main flow controller and the check valve are simultaneously
Connection is set.
5. the air-conditioning system with supercooling apparatus as claimed in claim 3, it is characterised in that the exhaust outlet of the main compressor with
Oil eliminator is additionally provided between the exhaust port of the four-way valve.
6. the air-conditioning system as claimed in claim 5 with supercooling apparatus, it is characterised in that be provided with back on the oil eliminator
Gas returning port of the oil pipe line respectively with the main compressor and the auxiliary compressor is connected.
7. a kind of air conditioning control method of the air-conditioning system with supercooling apparatus, it is characterised in that the air-conditioning with supercooling apparatus
System is the air-conditioning system with supercooling apparatus described in claim any one of 1-6, and the control method includes：
Step S1, when air conditioner refrigerating is run, opens the air-conditioner outdoor unit；
Step S2, detects the degree of supercooling of the first passage outlet；
Step S3, when the degree of supercooling is less than the first default degree of supercooling, opens the supercooling apparatus, from the main refrigerant pipe
The part refrigerant on road is circulated in the supercooling apparatus, the refrigerant of the second channel is carried out the refrigerant of the first passage
Cooling.
8. the air conditioning control method of the air-conditioning system as claimed in claim 7 with supercooling apparatus, it is characterised in that the auxiliary
Compressor is constant speed compressor, is also included after the step S3：
Step S4, the first preset time is reached when detecting duration of the degree of supercooling not less than the second default degree of supercooling
When, the supercooling apparatus is closed, wherein, the described second default degree of supercooling is more than the described first default degree of supercooling.
9. the air conditioning control method of the air-conditioning system as claimed in claim 7 with supercooling apparatus, it is characterised in that the auxiliary
Compressor is frequency-changeable compressor, is also included after the step S3：
Step S5, controls the auxiliary compressor according to the preset time of predeterminated frequency continuous service second；
Step S61, when detecting the degree of supercooling not less than the described second default degree of supercooling, controls the auxiliary compressor every
The first predeterminated frequency value is reduced every the 3rd preset time；
Step S62, when detecting the degree of supercooling less than the described first default degree of supercooling, control the auxiliary compressor every
4th preset time raises the second predeterminated frequency value.
10. the air conditioning control method of the air-conditioning system as claimed in claim 9 with supercooling apparatus, it is characterised in that described auxiliary
Helping the frequency of compressor includes also including after lower limit and higher limit, the step S61：
Step S71, when the frequency of the auxiliary compressor is reduced to lower limit, the degree of supercooling is default still not less than described second
During degree of supercooling, then the supercooling apparatus is closed；
Also include after the step S62：
Step S72, when the frequency of the auxiliary compressor is increased to higher limit, the degree of supercooling was preset still less than described first
It is cold when spending, then control the auxiliary compressor to be run according to the higher limit.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747789A (en) * | 2017-08-30 | 2018-03-02 | 青岛海尔空调器有限总公司 | The fault detect of air-conditioning and its supercooling tube group and processing method |
| CN109682034A (en) * | 2018-12-13 | 2019-04-26 | 广东美的暖通设备有限公司 | Refrigeration system and its control method, air conditioner |
| CN114165909A (en) * | 2020-09-10 | 2022-03-11 | 广东美的暖通设备有限公司 | Air conditioning system, control method of air conditioning system, and computer-readable storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000193328A (en) * | 1998-12-25 | 2000-07-14 | Mitsubishi Electric Corp | Freezer |
| CN103604237A (en) * | 2013-11-15 | 2014-02-26 | Tcl空调器(中山)有限公司 | Air conditioner and method for controlling same |
| US20140083122A1 (en) * | 2012-09-24 | 2014-03-27 | Lg Electronics Inc. | Integral air conditioning system for heating and cooling |
| CN104792051A (en) * | 2015-04-07 | 2015-07-22 | 特灵空调***(中国)有限公司 | Multi-stage compression refrigerant circulation system and control method thereof |
| CN105588361A (en) * | 2015-11-04 | 2016-05-18 | 青岛海信日立空调***有限公司 | Multi-split air-conditioning system |
-
2017
- 2017-03-10 CN CN201710145653.2A patent/CN106949657B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000193328A (en) * | 1998-12-25 | 2000-07-14 | Mitsubishi Electric Corp | Freezer |
| US20140083122A1 (en) * | 2012-09-24 | 2014-03-27 | Lg Electronics Inc. | Integral air conditioning system for heating and cooling |
| CN103604237A (en) * | 2013-11-15 | 2014-02-26 | Tcl空调器(中山)有限公司 | Air conditioner and method for controlling same |
| CN104792051A (en) * | 2015-04-07 | 2015-07-22 | 特灵空调***(中国)有限公司 | Multi-stage compression refrigerant circulation system and control method thereof |
| CN105588361A (en) * | 2015-11-04 | 2016-05-18 | 青岛海信日立空调***有限公司 | Multi-split air-conditioning system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747789A (en) * | 2017-08-30 | 2018-03-02 | 青岛海尔空调器有限总公司 | The fault detect of air-conditioning and its supercooling tube group and processing method |
| CN107747789B (en) * | 2017-08-30 | 2019-11-05 | 青岛海尔空调器有限总公司 | The fault detection and processing method of air-conditioning and its supercooling tube group |
| CN109682034A (en) * | 2018-12-13 | 2019-04-26 | 广东美的暖通设备有限公司 | Refrigeration system and its control method, air conditioner |
| CN109682034B (en) * | 2018-12-13 | 2021-01-05 | 广东美的暖通设备有限公司 | Refrigerating system, control method thereof and air conditioner |
| CN114165909A (en) * | 2020-09-10 | 2022-03-11 | 广东美的暖通设备有限公司 | Air conditioning system, control method of air conditioning system, and computer-readable storage medium |
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| CN106949657B (en) | 2020-02-11 |
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