CN108105912A - Multi-line system and its anti-refrigerant bias current control method, control device - Google Patents
Multi-line system and its anti-refrigerant bias current control method, control device Download PDFInfo
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- CN108105912A CN108105912A CN201711308694.5A CN201711308694A CN108105912A CN 108105912 A CN108105912 A CN 108105912A CN 201711308694 A CN201711308694 A CN 201711308694A CN 108105912 A CN108105912 A CN 108105912A
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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
- F24F5/0003—Exclusively-fluid systems
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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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
- 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
- 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
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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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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Analytical Chemistry (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention discloses a kind of multi-line systems and its anti-refrigerant bias current control method, control device, the control method to comprise the following steps：When multi-line system is run with hybrid refrigeration heating mode, the degree of superheat for the indoor unit that freezes in multiple indoor units and the degree of supercooling of heating indoor unit are obtained respectively；Obtain the working condition of each outdoor heat exchanger；At least one aperture in multiple outdoor restricting elements and multiple indoor restricting elements is adjusted according to the degree of supercooling of the working condition of each outdoor heat exchanger, the degree of superheat for the indoor unit that freezes and heating indoor unit, so as to effectively avoid the problem that refrigeration indoor unit refrigerating capacity deficiency or time liquid caused by lacking refrigerant or more refrigerants.
Description
Technical field
The present invention relates to air-conditioning technical field, the anti-refrigerant bias current control method of more particularly to a kind of multi-line system, one
The anti-refrigerant bias current control device of kind multi-line system and a kind of multi-line system with the anti-refrigerant bias current control device.
Background technology
When Three-pipe heat recovery multi-connected machine system is run with hybrid refrigeration heating mode, Biased flow phenomenon easily occurs, leads
Cause in refrigeration machine lack refrigerant either more refrigerants and the problem of cause mechanism cold scarce capacity in refrigeration or return liquid, it is still, existing
Some control methods not yet solve the problems, such as this well.
The content of the invention
It is contemplated that one of the technical issues of at least solving to a certain extent in above-mentioned technology.For this purpose, the present invention
First purpose is the anti-refrigerant bias current control method for proposing a kind of multi-line system, by outdoor restricting element and interior
The aperture of restricting element is rationally adjusted, and refrigeration indoor unit can effectively be avoided to be made caused by lacking refrigerant or more refrigerants
Cold scarce capacity or return liquid the problem of.
Second object of the present invention is to propose a kind of computer readable storage medium.Third object of the present invention exists
In a kind of anti-refrigerant bias current control device of multi-line system of proposition.Fourth object of the present invention is to propose a kind of multi-connected machine
System.
In order to achieve the above objectives, first aspect present invention embodiment proposes a kind of anti-refrigerant bias current control of multi-line system
Method processed, the multi-line system include outdoor unit, multiple indoor units and part flow arrangement, and the outdoor unit includes the first four-way
Valve, multiple outdoor heat exchangers, the second four-way valve being correspondingly arranged respectively with each outdoor heat exchanger, respectively with each outdoor heat exchange
The outdoor restricting element that device is correspondingly arranged, each indoor unit include indoor heat exchanger and correspond to what the indoor heat exchanger was set
Indoor restricting element, wherein, one end of each indoor heat exchanger by corresponding indoor restricting element and the first pipeline with
Each outdoor restricting element is connected, and the other end of each indoor heat exchanger passes through the second pipeline and first four-way
The first port of valve is connected, and passes through the 3rd pipeline and be connected with the second port of first four-way valve, the anti-refrigerant bias current
Control method comprises the following steps：When the multi-line system is run with hybrid refrigeration heating mode, obtain respectively described more
The degree of superheat of indoor unit of freezing in a indoor unit and the degree of supercooling of heating indoor unit；Obtain the work of each outdoor heat exchanger
State；According to the working condition of each outdoor heat exchanger, the degree of superheat of the refrigeration indoor unit and the heating indoor unit
Degree of supercooling at least one aperture in multiple outdoor restricting elements and multiple indoor restricting elements is adjusted
Section.
The anti-refrigerant bias current control method of multi-line system according to embodiments of the present invention, when multi-line system is made with mixing
During cold heating mode operation, the degree of superheat for the indoor unit that freezes in multiple indoor units and the degree of supercooling of heating indoor unit are obtained respectively,
And the working condition of each outdoor heat exchanger is obtained, further according to the working condition of each outdoor heat exchanger, refrigeration indoor unit
The degree of superheat and heating indoor unit degree of supercooling at least one in multiple outdoor restricting elements and multiple indoor restricting elements
Aperture be adjusted.This method is rationally adjusted by the aperture to outdoor restricting element and indoor restricting element, can
Effectively avoid the problem that refrigeration indoor unit refrigerating capacity deficiency or time liquid caused by lacking refrigerant or more refrigerants.
In addition, the anti-refrigerant bias current control method for the multi-line system that above-described embodiment proposes can also have according to the present invention
There is following additional technical characteristic：
According to one embodiment of present invention, according in the working condition of each outdoor heat exchanger, the cool room
The degree of superheat of machine and the degree of supercooling of the heating indoor unit are to multiple outdoor restricting elements and multiple indoor throttling members
At least one aperture in part is adjusted, including：When at least one for outdoor evaporation in the multiple outdoor heat exchanger
During device, judge whether the degree of superheat of the refrigeration indoor unit is bigger than normal；When the degree of superheat of the refrigeration indoor unit is bigger than normal, further
Judge whether the aperture of the corresponding indoor restricting element of the refrigeration indoor unit reaches maximum opening；If the refrigeration indoor unit
The aperture of corresponding interior restricting element is not up to maximum opening, then increases the corresponding indoor restricting element of the refrigeration indoor unit
Aperture；If the aperture of the corresponding indoor restricting element of the refrigeration indoor unit reaches maximum opening, reduce the outdoor
The aperture of the corresponding outdoor restricting element of evaporator.
According to one embodiment of present invention, according in the working condition of each outdoor heat exchanger, the cool room
The degree of superheat of machine and the degree of supercooling of the heating indoor unit are to multiple outdoor restricting elements and multiple indoor throttling members
At least one aperture in part is adjusted, including：When the part in the multiple outdoor heat exchanger be outdoor condenser,
When another part is outdoor evaporator, judge whether the degree of supercooling of the heating indoor unit is bigger than normal；If the heating indoor unit
Degree of supercooling it is bigger than normal, then increase the aperture of the corresponding outdoor restricting element of the outdoor condenser.
According to one embodiment of present invention, according in the working condition of each outdoor heat exchanger, the cool room
The degree of superheat of machine and the degree of supercooling of the heating indoor unit are to multiple outdoor restricting elements and multiple indoor throttling members
At least one aperture in part is adjusted, including：When the multiple outdoor heat exchanger is outdoor evaporator, institute is judged
Whether the degree of supercooling for stating heating indoor unit is bigger than normal；When the degree of supercooling of the heating indoor unit is bigger than normal, the system is determined whether
Whether the aperture of the corresponding indoor restricting element of hot indoor unit reaches maximum opening；If described heat the corresponding interior of indoor unit
The aperture of restricting element is not up to maximum opening, then increases the aperture of the corresponding indoor restricting element of the heating indoor unit；Such as
The aperture that the corresponding indoor restricting element of indoor unit is heated described in fruit reaches maximum opening, then increases the outdoor evaporator and correspond to
Outdoor restricting element aperture.
According to one embodiment of present invention, according in the working condition of each outdoor heat exchanger, the cool room
The degree of superheat of machine and the degree of supercooling of the heating indoor unit are to multiple outdoor restricting elements and multiple indoor throttling members
At least one aperture in part is adjusted, including：When the multiple outdoor heat exchanger is outdoor condenser, institute is judged
Whether the degree of superheat for stating refrigeration indoor unit is less than normal；When the degree of superheat of the refrigeration indoor unit is less than normal, the system is determined whether
Whether the aperture of the corresponding indoor restricting element of cold indoor unit reaches minimum aperture；If the corresponding interior of indoor unit of freezing
The aperture of restricting element is not up to minimum aperture, then reduces the aperture of the corresponding indoor restricting element of the refrigeration indoor unit；Such as
The aperture of the corresponding indoor restricting element of the indoor unit that freezes described in fruit reaches minimum aperture, then reduces the outdoor condenser and correspond to
Outdoor restricting element aperture.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of computer readable storage medium, has
Instruction therein is stored in, when executed, the multi-line system performs above-mentioned anti-refrigerant bias current controlling party
Method.
The computer readable storage medium of the embodiment of the present invention by performing above-mentioned anti-refrigerant bias current control method, leads to
It crosses and the aperture of outdoor restricting element and indoor restricting element is rationally adjusted, can be good at solving refrigeration indoor unit because lacking
The problem of refrigerating capacity is insufficient caused by few refrigerant or more refrigerants or returns liquid.
In order to achieve the above objectives, third aspect present invention embodiment proposes a kind of anti-refrigerant bias current control of multi-line system
Device processed, the multi-line system include outdoor unit, multiple indoor units and part flow arrangement, and the outdoor unit includes the first four-way
Valve, multiple outdoor heat exchangers, the second four-way valve being correspondingly arranged respectively with each outdoor heat exchanger, respectively with each outdoor heat exchange
The outdoor restricting element that device is correspondingly arranged, each indoor unit include indoor heat exchanger and correspond to what the indoor heat exchanger was set
Indoor restricting element, wherein, one end of each indoor heat exchanger by corresponding indoor restricting element and the first pipeline with
Each outdoor restricting element is connected, and the other end of each indoor heat exchanger passes through the second pipeline and first four-way
The first port of valve is connected, and passes through the 3rd pipeline and be connected with the second port of first four-way valve, the anti-refrigerant bias current
Control device includes：First acquisition module, for when the multi-line system is run with hybrid refrigeration heating mode, obtaining respectively
Take the degree of superheat for the indoor unit that freezes in the multiple indoor unit and the degree of supercooling of heating indoor unit；Second acquisition module, for obtaining
Take the working condition of each outdoor heat exchanger；Control module, for according to each outdoor heat exchanger working condition,
The degree of superheat of the refrigeration indoor unit and the degree of supercooling of the heating indoor unit are to multiple outdoor restricting elements and multiple institutes
At least one aperture stated in indoor restricting element is adjusted.
The anti-refrigerant bias current control device of multi-line system according to embodiments of the present invention, when multi-line system is made with mixing
During cold heating mode operation, the degree of superheat and the heating of the indoor unit that freezes in multiple indoor units are obtained respectively by the first acquisition module
The degree of supercooling of indoor unit, and pass through the working condition that the second acquisition module obtains each outdoor heat exchanger, further pass through control
Module is according to the working condition of each outdoor heat exchanger, the degree of superheat for the indoor unit that freezes and heats the degree of supercooling of indoor unit to multiple
At least one aperture in outdoor restricting element and multiple indoor restricting elements is adjusted.The device passes through to outdoor throttling
The aperture of element and indoor restricting element is rationally adjusted, and can effectively avoid refrigeration indoor unit because lacking refrigerant or more refrigerants
Caused by refrigerating capacity deficiency or return liquid the problem of.
In addition, the anti-refrigerant bias current control device for the multi-line system that above-described embodiment proposes can also have according to the present invention
There is following additional technical characteristic：
According to one embodiment of present invention, the control module according to the working condition of each outdoor heat exchanger,
The degree of superheat of the refrigeration indoor unit and the degree of supercooling of the heating indoor unit are to multiple outdoor restricting elements and multiple institutes
At least one aperture stated in indoor restricting element is adjusted, including：As at least one in the multiple outdoor heat exchanger
It is a be outdoor evaporator when, judge it is described freeze indoor unit the degree of superheat it is whether bigger than normal；When the degree of superheat of the refrigeration indoor unit
When bigger than normal, determine whether the aperture of the corresponding indoor restricting element of the refrigeration indoor unit reaches maximum opening；If
The aperture of the corresponding indoor restricting element of the refrigeration indoor unit is not up to maximum opening, then increases the refrigeration indoor unit and correspond to
Indoor restricting element aperture；If the aperture of the corresponding indoor restricting element of the refrigeration indoor unit reaches maximum opening,
Then reduce the aperture of the corresponding outdoor restricting element of the outdoor evaporator.
According to one embodiment of present invention, the control module according to the working condition of each outdoor heat exchanger,
The degree of superheat of the refrigeration indoor unit and the degree of supercooling of the heating indoor unit are to multiple outdoor restricting elements and multiple institutes
At least one aperture stated in indoor restricting element is adjusted, including：A part in the multiple outdoor heat exchanger
When for outdoor condenser, another part being outdoor evaporator, judge whether the degree of supercooling of the heating indoor unit is bigger than normal；If institute
It states that the degree of supercooling of heating indoor unit is bigger than normal, then increases the aperture of the corresponding outdoor restricting element of the outdoor condenser.
According to one embodiment of present invention, the control module according to the working condition of each outdoor heat exchanger,
The degree of superheat of the refrigeration indoor unit and the degree of supercooling of the heating indoor unit are to multiple outdoor restricting elements and multiple institutes
At least one aperture stated in indoor restricting element is adjusted, including：When the multiple outdoor heat exchanger is outdoor steaming
When sending out device, judge whether the degree of supercooling of the heating indoor unit is bigger than normal；When the degree of supercooling of the heating indoor unit is bigger than normal, into one
Step judges whether the aperture of the corresponding indoor restricting element of the heating indoor unit reaches maximum opening；If in the heating chamber
The aperture of the corresponding indoor restricting element of machine is not up to maximum opening, then increases the corresponding indoor throttling member of the heating indoor unit
The aperture of part；If the aperture for heating the corresponding indoor restricting element of indoor unit reaches maximum opening, increase the room
The aperture of the corresponding outdoor restricting element of outer evaporator.
According to one embodiment of present invention, the control module according to the working condition of each outdoor heat exchanger,
The degree of superheat of the refrigeration indoor unit and the degree of supercooling of the heating indoor unit are to multiple outdoor restricting elements and multiple institutes
At least one aperture stated in indoor restricting element is adjusted, including：When the multiple outdoor heat exchanger is outdoor cold
During condenser, judge whether the degree of superheat of the refrigeration indoor unit is less than normal；When the degree of superheat of the refrigeration indoor unit is less than normal, into one
Step judges whether the aperture of the corresponding indoor restricting element of the refrigeration indoor unit reaches minimum aperture；If in the cool room
The aperture of the corresponding indoor restricting element of machine is not up to minimum aperture, then reduces the corresponding indoor throttling member of the refrigeration indoor unit
The aperture of part；If the aperture of the corresponding indoor restricting element of the refrigeration indoor unit reaches minimum aperture, reduce the room
The aperture of the corresponding outdoor restricting element of external condenser.
In order to achieve the above objectives, fourth aspect present invention embodiment proposes a kind of multi-line system, including above-mentioned
Anti- refrigerant bias current control device.
The multi-line system of the embodiment of the present invention, by above-mentioned anti-refrigerant bias current control device, by outdoor throttling
The aperture of element and indoor restricting element is rationally adjusted, and can effectively avoid refrigeration indoor unit because lacking refrigerant or more refrigerants
Caused by refrigerating capacity deficiency or return liquid the problem of.
Description of the drawings
Fig. 1 is the structure diagram of multi-line system according to an embodiment of the invention；
Fig. 2 is the flow chart of the anti-refrigerant bias current control method of multi-line system according to embodiments of the present invention；
Fig. 3 is the stream of refrigerant when multi-line system according to an embodiment of the invention is run with hybrid refrigeration heating mode
Xiang Tu；
Fig. 4 is the flow chart of the anti-refrigerant bias current control method of multi-line system according to an embodiment of the invention；
Fig. 5 is refrigerant when multi-line system in accordance with another embodiment of the present invention is run with hybrid refrigeration heating mode
Flow graph；
Fig. 6 is refrigerant when the multi-line system of another embodiment according to the present invention is run with hybrid refrigeration heating mode
Flow graph；And
Fig. 7 is the flow chart of the anti-refrigerant bias current control device of multi-line system according to embodiments of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or has the function of same or like element.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
The anti-refrigerant bias current control method, of the multi-line system of proposition of the embodiment of the present invention described more below in conjunction with the accompanying drawings
The anti-refrigerant bias current control device of on-line system and the multi-line system with the anti-refrigerant bias current control device.
In an embodiment of the present invention, multi-line system includes outdoor unit, multiple indoor units and part flow arrangement, outdoor unit bag
Include the first four-way valve, multiple outdoor heat exchangers, the second four-way valve being correspondingly arranged respectively with each outdoor heat exchanger, respectively with often
The outdoor restricting element that a outdoor heat exchanger is correspondingly arranged, each indoor unit include indoor heat exchanger and the corresponding indoor heat exchanger
The indoor restricting element of setting, wherein, one end of each indoor heat exchanger passes through corresponding indoor restricting element and the first pipeline
It is connected with each outdoor restricting element, the first end that the other end of each indoor heat exchanger passes through the second pipeline and the first four-way valve
Mouth is connected, and passes through the 3rd pipeline and be connected with the second port of the first four-way valve.Wherein, multiple outdoor heat exchangers and multiple interiors
The number of machine can be configured according to actual conditions, for example, multiple outdoor heat exchangers can include the first outdoor heat exchanger and the
Two outdoor heat exchangers, multiple indoor units can include the first indoor unit and the second indoor unit.
Specifically, as shown in Figure 1, multi-line system may include outdoor unit 10, multiple indoor units 20 and part flow arrangement 30.Room
Outer machine 10 may include the first four-way valve ST1, the first outdoor heat exchanger 11, the second outdoor heat exchanger 12, compressor 13, outdoor gas-liquid
Separator 14, oil eliminator 15, bypass capillary 16, the second four-way valve ST2 being correspondingly arranged with the first outdoor heat exchanger 11, with
The second four-way valve ST3 that second outdoor heat exchanger 12 is correspondingly arranged and the outdoor throttling that the first outdoor heat exchanger 11 is correspondingly arranged
The element EXVA and outdoor restricting element EXVB being correspondingly arranged with the second outdoor heat exchanger 12.Wherein, the exhaust outlet of compressor 13
Be connected with the first end of oil eliminator 15, the second end of oil eliminator 15 respectively with the 3rd end of the first four-way valve ST1, the two or four
The 3rd end of port valve ST2 is connected with the 3rd end of the second four-way valve ST3, second end and the 3rd pipeline phase of the first four-way valve ST1
Even, the first end of the first four-way valve ST1 is connected with the second pipeline, one end of outdoor gas-liquid separator 14 respectively with the first four-way valve
The first end of ST1, the first end of the second four-way valve ST2 are connected with the first end of the second four-way valve ST3, outdoor gas-liquid separator 14
One end also pass through the 4th end of capillary and the first four-way valve ST1, the 4th end of the second four-way valve ST2 and the second four-way respectively
The 4th end of valve ST3 is connected, the 3rd end of oil eliminator 15 by bypass capillary 16 respectively with outdoor gas-liquid separator 14
The other end is connected with the gas returning port of compressor 13, the second end of the second four-way valve ST2 and one end phase of the first outdoor heat exchanger 11
Even, the other end of the first outdoor heat exchanger 11 is connected to the first pipeline by outdoor restricting element EXVA, the second four-way valve ST3's
Second end is connected with one end of the second outdoor heat exchanger 12, and the other end of the second outdoor heat exchanger 12 passes through outdoor restricting element
EXVB is connected to the first pipeline.Wherein, outdoor restricting element EXVA and EXVB can be electric expansion valve.
Multiple indoor units 20 can include the first indoor unit and the second indoor unit.Wherein, the first indoor unit may include first
The indoor restricting element EXV1 that indoor heat exchanger 21 and corresponding first indoor heat exchanger 21 are set, the second indoor unit may include second
The indoor restricting element EXV2 that indoor heat exchanger 22 and corresponding second indoor heat exchanger 22 are set.Indoor restricting element EXV1 and
EXV2 can be electric expansion valve.
Part flow arrangement 30 may include heat exchanger 31, supercooling circuit valve body EV, multiple refrigeration on-off valves 32 and 33, multiple heatings
On-off valve 34 and 35.Wherein, the entrance of the first heat exchange flow path of heat exchanger 31 passes through the first pipeline and outdoor restricting element EXVA
It is connected with EXVB, in the first indoor unit and second Room in the outlet and multiple indoor units 20 of the first heat exchange flow path of heat exchanger 31
Machine is connected, and the entrance of the second heat exchange flow path of heat exchanger 31 is by being subcooled the first heat exchange flow path of circuit valve body EV and heat exchanger 31
Outlet be connected, the second heat exchange outlet of flow path and one end phase of the outdoor gas-liquid separator 14 in outdoor unit 10 of heat exchanger 31
Even.Circuit valve body EV, which is subcooled, to be electric expansion valve, and heat exchanger 31 can be plate heat exchanger.
One end of first indoor heat exchanger 21 passes through the first heat exchange flow path of indoor restricting element EXV1 and heat exchanger 31
Outlet (that is, the entrance of the second heat exchange flow path of heat exchanger 31) is connected, and one end of the second indoor heat exchanger 22 passes through indoor throttling
Element EXV2 is connected with the outlet of the first heat exchange flow path of heat exchanger 31, in the other end and second Room of the first indoor heat exchanger 21
The other end of heat exchanger 22 is connected respectively by corresponding refrigeration on-off valve 32 and 33 with the second pipeline, the first indoor heat exchanger 21
The other end and the other end of the second indoor heat exchanger 22 also pass through corresponding heating on-off valve 34 and 35 and the 3rd pipeline respectively
It is connected.
Fig. 2 is the anti-refrigerant bias current control method of multi-line system according to embodiments of the present invention.As shown in Fig. 2, this is more
The anti-refrigerant bias current control method of on-line system may include following steps：
S1 when multi-line system is run with hybrid refrigeration heating mode, is obtained in multiple indoor units in cool room respectively
The degree of superheat of machine and the degree of supercooling of heating indoor unit.
Specifically, when multi-line system is run with hybrid refrigeration heating mode, can be exported by obtaining refrigeration indoor unit
Saturation temperature corresponding to the temperature at place and the pressure in exit is made the degree of superheat that calculates refrigeration indoor unit or by obtaining
The outlet of indoor heat exchanger and the temperature at middle part calculate the degree of superheat of refrigeration indoor unit in cold indoor unit；By obtaining heating chamber
Saturation temperature corresponding to the temperature in interior machine exit and the pressure in exit calculates the degree of supercooling of heating indoor unit, Huo Zhetong
It crosses and obtains in heating indoor unit the outlet of indoor heat exchanger and the temperature at middle part to calculate the degree of supercooling of heating indoor unit.
For example, by be arranged on refrigeration indoor unit in indoor heat exchanger exit temperature sensor (such as temperature sensing package)
The temperature Tout1 at this is obtained, and passes through temperature sensor (such as temperature-sensitive being arranged in refrigeration indoor unit in the middle part of indoor heat exchanger
Bag) temperature Tin1 at this is obtained, the degree of superheat DSH of refrigeration indoor unit is further calculated according to temperature Tout1 and temperature Tin1
=Tout1-Tin1；It is obtained by the temperature sensor (such as temperature sensing package) for being arranged on indoor heat exchanger exit in heating indoor unit
Temperature Tout2 at this is obtained by being arranged on the temperature sensor (such as temperature sensing package) in heating indoor unit in the middle part of indoor heat exchanger
The temperature Tin2 at this is taken, the degree of supercooling DSC=of heating indoor unit is further calculated according to temperature Tout2 and temperature Tin2
Tout2-Tin2。
S2 obtains the working condition of each outdoor heat exchanger.
Wherein, the working condition of multiple outdoor heat exchangers may include：Multiple outdoor heat exchangers make as outdoor evaporator
With；A part in multiple outdoor heat exchangers is used as outdoor condenser, another part as outdoor evaporator；Multiple outdoors
Heat exchanger is used as outdoor condenser.
S3, according to the working condition of each outdoor heat exchanger, the degree of superheat for the indoor unit that freezes and the supercooling for heating indoor unit
It spends and at least one aperture in multiple outdoor restricting elements and multiple indoor restricting elements is adjusted.
In one embodiment of the invention, according to the working condition of each outdoor heat exchanger, the overheat for the indoor unit that freezes
The degree of supercooling of degree and heating indoor unit is at least one aperture in multiple outdoor restricting elements and multiple indoor restricting elements
It is adjusted, including：When in multiple outdoor heat exchangers it is at least one be outdoor evaporator when, judge freeze indoor unit overheat
Whether degree is bigger than normal；When the degree of superheat for the indoor unit that freezes is bigger than normal, the corresponding indoor restricting element of refrigeration indoor unit is determined whether
Aperture whether reach maximum opening；If the aperture of the corresponding indoor restricting element of refrigeration indoor unit is not up to maximum opening,
Then increase the aperture of the corresponding indoor restricting element of refrigeration indoor unit；If the corresponding indoor restricting element of refrigeration indoor unit is opened
Degree reaches maximum opening, then reduces the aperture of the corresponding outdoor restricting element of outdoor evaporator.
Further, according to the working condition of each outdoor heat exchanger, the degree of superheat for the indoor unit that freezes and heating indoor unit
Degree of supercooling at least one aperture in multiple outdoor restricting elements and multiple indoor restricting elements is adjusted, including：
When multiple outdoor heat exchangers are outdoor evaporator, judge whether the degree of supercooling for heating indoor unit is bigger than normal；When heating indoor unit
Degree of supercooling it is bigger than normal when, determine whether the aperture of the corresponding indoor restricting element of heating indoor unit reaches maximum opening；
If the aperture of the corresponding indoor restricting element of heating indoor unit is not up to maximum opening, increase the corresponding room of heating indoor unit
The aperture of interior restricting element；If the aperture of the corresponding indoor restricting element of heating indoor unit reaches maximum opening, increase room
The aperture of the corresponding outdoor restricting element of outer evaporator.
Specifically, user can send user instruction by remote controler etc., more coupled systems to be controlled to be heated with hybrid refrigeration
Mode operation, wherein, the first indoor unit is run (that is, the first indoor unit is used as refrigeration indoor unit) in a chiller mode, and second
Indoor unit runs (that is, the second indoor unit is used as heating indoor unit), the first outdoor heat exchanger and second Room using heating mode
External heat exchanger is used as outdoor evaporator.Further, it is high when multi-line system is run with hybrid refrigeration heating mode
Refrigerant and low pressure refrigerant flow direction is pressed as shown in solid arrow and dotted arrow in Fig. 3, to pass through the second indoor heat exchanger 22 respectively
Refrigerant through indoor restricting element EXV2 point be two-way, flow into the first indoor heat exchanger 21 through indoor restricting element EXV1 all the way；
Another way separately flows into 11 and of the first outdoor heat exchanger through heat exchanger 31, outdoor restricting element EXVA and outdoor restricting element EXVB
Second outdoor heat exchanger 12.If the aperture control of indoor restricting element and outdoor restricting element is unreasonable, it is easy to cause
It flows into that the coolant quantity of the first indoor heat exchanger 21 is less, flows into the refrigerant of the first outdoor heat exchanger 11 and the second outdoor heat exchanger 12
The problem of more is measured, so as to ensure the refrigerating capacity of machine in refrigeration.
For this purpose, when multi-line system is run with hybrid refrigeration heating mode, the degree of superheat of refrigeration indoor unit is obtained in real time
The degree of supercooling DSC of DSH and heating indoor unit, and calculate the degree of superheat DSH and the first goal-selling degree of superheat of refrigeration indoor unit
Difference (DSH-DSH1) between DSH1 targets, heat indoor unit degree of supercooling DSC and the first goal-selling degree of supercooling DSC1 it
Between difference (DSC-DSC1), then judge the magnitude relationship between (DSH-DSH1) and the first return difference temperature DSH11, judgement
(DSC-DSC1) magnitude relationship between the second return difference temperature DSC11.
If (DSH-DSH1) ＞ DSH11, judge that the degree of superheat of refrigeration indoor unit (such as the first indoor unit) is bigger than normal.Work as system
When the degree of superheat of cold indoor unit is bigger than normal, determining whether the aperture of the corresponding indoor restricting element (such as EXV1) of refrigeration indoor unit is
It is no to reach maximum opening.If it is not, then the aperture of indoor restricting element corresponding to refrigeration indoor unit carries out tuning up control；If
It is, then outdoor restricting element (such as EXVA corresponding to outdoor evaporator (such as the first outdoor heat exchanger and the second outdoor heat exchanger)
And EXVB) aperture carry out turning control down, until | DSH-DSH1 |≤DSH11 so that flow through refrigeration indoor unit coolant quantity increase
It is more, ensure the refrigerating capacity of refrigeration indoor unit.
Meanwhile if (DSC-DSC1) ＞ DSC11, judge that the degree of supercooling for heating indoor unit (such as the second indoor unit) is inclined
Greatly.When the degree of supercooling for heating indoor unit is bigger than normal, the corresponding indoor restricting element (such as EXV2) of heating indoor unit is determined whether
Aperture whether reach maximum opening.If it is not, then the aperture of indoor restricting element corresponding to heating indoor unit tunes up
Control；If it is, outdoor throttling member corresponding to outdoor evaporator (e.g., the first outdoor heat exchanger and the second outdoor heat exchanger)
The aperture of part (such as EXVA and EXVB), which is carried out at the same time, tunes up control, to reduce the degree of supercooling of heating indoor unit.
To further illustrate, Fig. 4 shows particular flow sheet.As shown in figure 4, the anti-refrigerant bias current control of the multi-line system
Method may include following steps：
S101, control multi-line system are run with hybrid refrigeration heating mode.
S102 obtains the degree of superheat DSH of refrigeration indoor unit and the degree of supercooling DSC of heating indoor unit.
S103 calculates the difference (DSH-DSH1) of refrigeration indoor unit, heats the difference (DSC-DSC1) of indoor unit.
S104 judges whether (DSH-DSH1) ＞ the first return difference temperature DSH11 is true.If so, perform step S105.
S105 judges that the degree of superheat of refrigeration indoor unit is bigger than normal.
S106, judges whether the aperture of the corresponding indoor restricting element of refrigeration indoor unit reaches maximum opening.If so, it holds
Row step S107；If not, perform step S108.
S107, the aperture of outdoor restricting element corresponding to outdoor evaporator carry out turning control down, until | DSH-DSH1 |
≤DSH11。
S108, the aperture of indoor restricting element corresponding to refrigeration indoor unit carry out tuning up control.
S109 judges whether (DSC-DSC1) ＞ the second return difference temperature DSC11 is true.If so, it is 110 to perform step.
S110 judges that the degree of supercooling for heating indoor unit is bigger than normal.
Whether S111, the aperture for judging to heat the corresponding indoor restricting element of indoor unit reach maximum opening.If so, it holds
Row step S112；If not, perform step S113.
S112, the aperture of outdoor restricting element corresponding to outdoor evaporator carry out tuning up control.
S113, the aperture of indoor restricting element corresponding to heating indoor unit carry out tuning up control.
The anti-refrigerant bias current control method of the multi-line system of the embodiment of the present invention as a result, when multi-line system to mix
During cooling and warming mode operation, pass through working condition, the degree of superheat for the indoor unit that freezes and the heating according to each outdoor heat exchanger
It is reasonable that the degree of supercooling of indoor unit carries out at least one aperture in multiple outdoor restricting elements and multiple indoor restricting elements
It adjusts, can effectively avoid the problem that refrigeration indoor unit refrigerating capacity caused by lacking refrigerant is insufficient.
In another embodiment of the present invention, according to the working condition of each outdoor heat exchanger, the mistake for the indoor unit that freezes
Temperature and the degree of supercooling of heating indoor unit open at least one in multiple outdoor restricting elements and multiple indoor restricting elements
Degree is adjusted, including：When in multiple outdoor heat exchangers it is at least one be outdoor evaporator when, judge freeze indoor unit mistake
Whether temperature is bigger than normal；When the degree of superheat for the indoor unit that freezes is bigger than normal, the corresponding indoor throttling member of refrigeration indoor unit is determined whether
Whether the aperture of part reaches maximum opening；If the aperture of the corresponding indoor restricting element of refrigeration indoor unit is not up to maximum and opens
Degree then increases the aperture of the corresponding indoor restricting element of refrigeration indoor unit；If the corresponding indoor restricting element of the indoor unit that freezes
Aperture reach maximum opening, then reduce the aperture of the corresponding outdoor restricting element of outdoor evaporator.
Further, according to the working condition of each outdoor heat exchanger, the degree of superheat for the indoor unit that freezes and heating indoor unit
Degree of supercooling at least one aperture in multiple outdoor restricting elements and multiple indoor restricting elements is adjusted, including：
When the part in multiple outdoor heat exchangers is outdoor condenser, another part is outdoor evaporator, judge to heat indoor unit
Degree of supercooling it is whether bigger than normal；If the degree of supercooling for heating indoor unit is bigger than normal, increase the corresponding outdoor throttling member of outdoor condenser
The aperture of part.
Specifically, user can send user instruction by remote controler etc., multi-line system to be controlled to be heated with hybrid refrigeration
Mode operation, wherein, the first indoor unit is run (that is, the first indoor unit is used as refrigeration indoor unit) in a chiller mode, and second
Indoor unit runs (that is, the second indoor unit is used as heating indoor unit) using heating mode, and the first outdoor heat exchanger is as outdoor
Condenser uses, and the second outdoor heat exchanger is used as outdoor evaporator.Further, when multi-line system is with hybrid refrigeration system
When heat pattern is run, the flow direction of high pressure refrigerant and low pressure refrigerant as shown in solid arrow and dotted arrow in Fig. 5, passes through respectively
The refrigerant of first outdoor heat exchanger 11 is two-way through outdoor restricting element EXVA points, all the way through heat exchanger 31 and indoor restricting element
EXV1 flows into the first indoor heat exchanger 21；Another way flows into the second outdoor heat exchanger 12 through outdoor restricting element EXVB.If room
The aperture of interior restricting element and outdoor restricting element controls unreasonable, it is easy to cause to flow into the cold of the first indoor heat exchanger 21
The problem of matchmaker's amount is less, and the coolant quantity of the second outdoor heat exchanger 12 of inflow is more, so as to ensure the refrigeration energy of machine in refrigeration
Power.
For this purpose, when multi-line system is run with hybrid refrigeration heating mode, the degree of superheat of refrigeration indoor unit is obtained in real time
The degree of supercooling DSC of DSH and heating indoor unit, and calculate the degree of superheat DSH and the first goal-selling degree of superheat of refrigeration indoor unit
Difference (DSH-DSH1) between DSH1 targets, heat indoor unit degree of supercooling DSC and the first goal-selling degree of supercooling DSC1 it
Between difference (DSC-DSC1), then judge the magnitude relationship between (DSH-DSH1) and the first return difference temperature DSH11, sentence simultaneously
Disconnected magnitude relationship between (DSC-DSC1) and the second return difference temperature DSC11.
If (DSH-DSH1) ＞ DSH11, judge that the degree of superheat of refrigeration indoor unit (such as the first indoor unit) is bigger than normal.Work as system
When the degree of superheat of cold indoor unit is bigger than normal, determining whether the aperture of the corresponding indoor restricting element (such as EXV1) of refrigeration indoor unit is
It is no to reach maximum opening.If it is not, then the aperture of indoor restricting element corresponding to refrigeration indoor unit carries out tuning up control；If
It is that then the aperture of outdoor restricting element (such as EXVB) corresponding to outdoor evaporator (such as the second outdoor heat exchanger) carries out turning control down
System, until | DSH-DSH1 |≤DSH11 so that the coolant quantity for flowing through refrigeration indoor unit increases, ensures the refrigeration of refrigeration indoor unit
Ability.
Meanwhile if (DSC-DSC1) ＞ DSC11, judge that the degree of supercooling for heating indoor unit (such as the second indoor unit) is inclined
Greatly.When the degree of supercooling for heating indoor unit is bigger than normal, outdoor throttling member corresponding to outdoor condenser (such as the first outdoor heat exchanger)
The aperture of part (such as EXVA) carries out tuning up control, to reduce the degree of supercooling of heating indoor unit.
The anti-refrigerant bias current control method of the multi-line system of the embodiment of the present invention as a result, when multi-line system to mix
During cooling and warming mode operation, pass through working condition, the degree of superheat for the indoor unit that freezes and the heating according to each outdoor heat exchanger
It is reasonable that the degree of supercooling of indoor unit carries out at least one aperture in multiple outdoor restricting elements and multiple indoor restricting elements
It adjusts, can effectively avoid the problem that refrigeration indoor unit refrigerating capacity caused by lacking refrigerant is insufficient.
In yet another embodiment of the present invention, according to the working condition of each outdoor heat exchanger, the mistake for the indoor unit that freezes
Temperature and the degree of supercooling of heating indoor unit open at least one in multiple outdoor restricting elements and multiple indoor restricting elements
Degree is adjusted, including：When multiple outdoor heat exchangers are outdoor condenser, judge whether the degree of superheat of refrigeration indoor unit is inclined
It is small；When the degree of superheat for the indoor unit that freezes is less than normal, determining whether the aperture of the corresponding indoor restricting element of refrigeration indoor unit is
It is no to reach minimum aperture；If the aperture of the corresponding indoor restricting element of the indoor unit that freezes is not up to minimum aperture, reduce system
The aperture of the corresponding indoor restricting element of cold indoor unit；If the aperture of the corresponding indoor restricting element of refrigeration indoor unit reaches most
Small guide vane then reduces the aperture of the corresponding outdoor restricting element of outdoor condenser.
Specifically, user can send user instruction by remote controler etc., multi-line system to be controlled to be heated with hybrid refrigeration
Mode operation, wherein, the first indoor unit is run (that is, the first indoor unit is used as refrigeration indoor unit) in a chiller mode, and second
Indoor unit runs (that is, the second indoor unit is used as heating indoor unit), the first outdoor heat exchanger and second Room using heating mode
External heat exchanger is used as outdoor condenser.Further, it is high when multi-line system is run with hybrid refrigeration heating mode
It presses the flow direction of refrigerant and low pressure refrigerant respectively as shown in solid arrow and dotted arrow in Fig. 6, flows into the first indoor heat exchanger
21 refrigerants have two-way, all the way by refrigerant of first outdoor heat exchanger 11 through outdoor restricting element EXVA with being changed outside by second Room
It is indoor that hot device 12 flows into first after the refrigerant of outdoor restricting element EXVB collects, through heat exchanger 31 and indoor restricting element EXV1
Heat exchanger 21；It is indoor to flow into first through indoor restricting element EXV2 for the refrigerant that another way is flowed out by the second indoor heat exchanger 22
Heat exchanger 21.If the aperture control of indoor restricting element and outdoor restricting element is unreasonable, it is easy to cause inflow first
The problem of coolant quantity of indoor heat exchanger 21 is more, so as to cause return liquid the problem of.
For this purpose, when multi-line system is run with hybrid refrigeration heating mode, the degree of superheat of refrigeration indoor unit is obtained in real time
DSH, and calculate the difference (DSH- between the degree of superheat DSH of refrigeration indoor unit and the first goal-selling degree of superheat DSH1 targets
DSH1), the magnitude relationship between (DSH-DSH1) and the first return difference temperature DSH11 is then judged.
If (DSH-DSH1) ＜-DSH11, judge that the degree of superheat of refrigeration indoor unit (such as the first indoor unit) is less than normal.When
When the degree of superheat of refrigeration indoor unit is less than normal, the aperture of the corresponding indoor restricting element (such as EXV1) of refrigeration indoor unit is determined whether
Whether minimum aperture is reached.If it is not, then the aperture of the corresponding indoor restricting element of refrigeration indoor unit is carried out turning control down；
If it is, the aperture of outdoor restricting element (such as EXVA and EXVB) corresponding to outdoor condenser is carried out at the same time and turns control down,
Until | DSH-DSH1 |≤DSH11, machine to be prevented in cool room more refrigerants occur, caused by return liquid problem.
The anti-refrigerant bias current control method of the multi-line system of the embodiment of the present invention as a result, when multi-line system to mix
During cooling and warming mode operation, pass through working condition, the degree of superheat for the indoor unit that freezes and the heating according to each outdoor heat exchanger
It is reasonable that the degree of supercooling of indoor unit carries out at least one aperture in multiple outdoor restricting elements and multiple indoor restricting elements
It adjusts, refrigeration indoor unit can effectively be avoided to return liquid problem caused by more refrigerants.
In conclusion the anti-refrigerant bias current control method of multi-line system according to embodiments of the present invention, when multi-connected machine system
When system is run with hybrid refrigeration heating mode, the degree of superheat for the indoor unit that freezes in multiple indoor units and heating indoor unit are obtained respectively
Degree of supercooling, and the working condition of each outdoor heat exchanger is obtained, further according to the working condition of each outdoor heat exchanger, system
The degree of superheat of cold indoor unit and the degree of supercooling of heating indoor unit are in multiple outdoor restricting elements and multiple indoor restricting elements
At least one aperture is adjusted.This method is rationally adjusted by the aperture to outdoor restricting element and indoor restricting element
Section can effectively avoid the problem that refrigeration indoor unit refrigerating capacity deficiency or time liquid caused by lacking refrigerant or more refrigerants.
In addition, the embodiment of the present invention also proposed a kind of computer readable storage medium, have and be stored in finger therein
Order, when executed, multi-line system perform above-mentioned anti-refrigerant bias current control method.
The computer readable storage medium of the embodiment of the present invention by performing above-mentioned anti-refrigerant bias current control method, leads to
It crosses and the aperture of outdoor restricting element and indoor restricting element is rationally adjusted, can effectively avoid refrigeration indoor unit because lacking
The problem of refrigerating capacity is insufficient caused by refrigerant or more refrigerants or returns liquid.
As shown in fig. 7, the embodiment of the present invention also proposed a kind of anti-refrigerant bias current control device of multi-line system.Such as
Shown in Fig. 7, the anti-refrigerant bias current control device of the multi-line system may include：First acquisition module 100, the second acquisition module
200 and control module 300.
Wherein, the first acquisition module 100 is used for when multi-line system is run with hybrid refrigeration heating mode, is obtained respectively
The degree of superheat of indoor unit of freezing in multiple indoor units and the degree of supercooling of heating indoor unit.Second acquisition module 200 is every for obtaining
The working condition of a outdoor heat exchanger.Control module 300 is used for the working condition according to each outdoor heat exchanger, refrigeration indoor unit
The degree of superheat and heating indoor unit degree of supercooling at least one in multiple outdoor restricting elements and multiple indoor restricting elements
Aperture be adjusted.
According to one embodiment of present invention, working condition of the control module 300 according to each outdoor heat exchanger, cool room
The degree of superheat of interior machine and the degree of supercooling of heating indoor unit in multiple outdoor restricting elements and multiple indoor restricting elements at least
The aperture of one is adjusted, including：When in multiple outdoor heat exchangers it is at least one be outdoor evaporator when, judge cool room
Whether the degree of superheat of interior machine is bigger than normal；When the degree of superheat for the indoor unit that freezes is bigger than normal, the corresponding room of refrigeration indoor unit is determined whether
Whether the aperture of interior restricting element reaches maximum opening；If the aperture of the corresponding indoor restricting element of refrigeration indoor unit is not up to
Maximum opening then increases the aperture of the corresponding indoor restricting element of refrigeration indoor unit；If the corresponding indoor section of the indoor unit that freezes
The aperture of fluid element reaches maximum opening, then reduces the aperture of the corresponding outdoor restricting element of outdoor evaporator.
Further, according to one embodiment of present invention, control module 300 is according to the work shape of each outdoor heat exchanger
The degree of supercooling of state, the degree of superheat for the indoor unit that freezes and heating indoor unit is to multiple outdoor restricting elements and multiple indoor restricting elements
In at least one aperture be adjusted, including：When the part in multiple outdoor heat exchangers is outdoor condenser, another portion
When being divided into outdoor evaporator, judge whether the degree of supercooling for heating indoor unit is bigger than normal；If the degree of supercooling for heating indoor unit is bigger than normal,
The aperture of the corresponding outdoor restricting element of the outdoor condenser of increase.
Further, according to another embodiment of the invention, control module 300 is according to the work of each outdoor heat exchanger
The degree of supercooling of state, the degree of superheat for the indoor unit that freezes and heating indoor unit is to multiple outdoor restricting elements and multiple indoor throttling members
At least one aperture in part is adjusted, including：When multiple outdoor heat exchangers are outdoor evaporator, heating chamber is judged
Whether the degree of supercooling of interior machine is bigger than normal；When the degree of supercooling for heating indoor unit is bigger than normal, the corresponding room of heating indoor unit is determined whether
Whether the aperture of interior restricting element reaches maximum opening；If the aperture of the corresponding indoor restricting element of heating indoor unit is not up to
Maximum opening then increases the aperture of the corresponding indoor restricting element of heating indoor unit；If heat the corresponding indoor section of indoor unit
The aperture of fluid element reaches maximum opening, then increases the aperture of the corresponding outdoor restricting element of outdoor evaporator.
According to still another embodiment of the invention, working condition, refrigeration of the control module 300 according to each outdoor heat exchanger
The degree of superheat of indoor unit and the degree of supercooling of heating indoor unit in multiple outdoor restricting elements and multiple indoor restricting elements extremely
Aperture one few is adjusted, including：When multiple outdoor heat exchangers are outdoor condenser, the mistake of refrigeration indoor unit is judged
Whether temperature is less than normal；When the degree of superheat for the indoor unit that freezes is less than normal, the corresponding indoor throttling member of refrigeration indoor unit is determined whether
Whether the aperture of part reaches minimum aperture；If the aperture of the corresponding indoor restricting element of refrigeration indoor unit is not up to minimum and opens
Degree then reduces the aperture of the corresponding indoor restricting element of refrigeration indoor unit；If the corresponding indoor restricting element of the indoor unit that freezes
Aperture reach minimum aperture, then reduce the aperture of the corresponding outdoor restricting element of outdoor condenser.
It should be noted that it is not disclosed in the anti-refrigerant bias current control device of the multi-line system of the embodiment of the present invention thin
Section, the details disclosed in the anti-refrigerant bias current control method for the multi-line system that refer to the embodiment of the present invention, specifically here
No longer it is described in detail.
The anti-refrigerant bias current control device of multi-line system according to embodiments of the present invention, when multi-line system is made with mixing
During cold heating mode operation, the degree of superheat and the heating of the indoor unit that freezes in multiple indoor units are obtained respectively by the first acquisition module
The degree of supercooling of indoor unit, and pass through the working condition that the second acquisition module obtains each outdoor heat exchanger, further pass through control
Module is according to the working condition of each outdoor heat exchanger, the degree of superheat for the indoor unit that freezes and heats the degree of supercooling of indoor unit to multiple
At least one aperture in outdoor restricting element and multiple indoor restricting elements is adjusted.The device passes through to outdoor throttling
The aperture of element and indoor restricting element is rationally adjusted, and can effectively avoid refrigeration indoor unit because lacking refrigerant or more refrigerants
Caused by refrigerating capacity deficiency or return liquid the problem of.
In addition, the embodiment of the present invention also proposed a kind of multi-line system, controlled including above-mentioned anti-refrigerant bias current
Device.
The multi-line system of the embodiment of the present invention, by above-mentioned anti-refrigerant bias current control device, by outdoor throttling
The aperture of element and indoor restricting element is rationally adjusted, and can effectively avoid refrigeration indoor unit because lacking refrigerant or more refrigerants
Caused by refrigerating capacity deficiency or return liquid the problem of.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combination thereof.Above-mentioned
In embodiment, software that multiple steps or method can in memory and by suitable instruction execution system be performed with storage
Or firmware is realized.If for example, with hardware come realize in another embodiment, can be under well known in the art
Any one of row technology or their combination are realized：With for the logic gates to data-signal realization logic function
Discrete logic, have suitable combinational logic gate circuit application-specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
In addition, in the description of the present invention, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ",
" on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " clockwise ", " inverse time
The orientation or position relationship of the instructions such as pin ", " axial direction ", " radial direction ", " circumferential direction " be based on orientation shown in the drawings or position relationship,
Be for only for ease of the description present invention and simplify description rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, " multiple " are meant that at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects
It connects or is electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features contact directly or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms is not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It is combined in an appropriate manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the different embodiments described in this specification or example and different embodiments or exemplary feature
It closes and combines.
Although the embodiment of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (12)
1. a kind of anti-refrigerant bias current control method of multi-line system, which is characterized in that the multi-line system include outdoor unit,
Multiple indoor units and part flow arrangement, the outdoor unit include the first four-way valve, multiple outdoor heat exchangers, are changed respectively with each outdoor
The second four-way valve that hot device is correspondingly arranged, the outdoor restricting element being correspondingly arranged respectively with each outdoor heat exchanger, it is each described
Indoor unit includes the indoor restricting element that indoor heat exchanger and the corresponding indoor heat exchanger are set, wherein, each interior is changed
One end of hot device is connected by corresponding indoor restricting element and the first pipeline with each outdoor restricting element, each described
The other end of indoor heat exchanger is connected by the second pipeline with the first port of first four-way valve, and pass through the 3rd pipeline with
The second port of first four-way valve is connected, and the anti-refrigerant bias current control method comprises the following steps：
When the multi-line system is run with hybrid refrigeration heating mode, obtain respectively in the multiple indoor unit in cool room
The degree of superheat of machine and the degree of supercooling of heating indoor unit；
Obtain the working condition of each outdoor heat exchanger；
According to the working condition of each outdoor heat exchanger, the degree of superheat of the refrigeration indoor unit and the heating indoor unit
At least one aperture in multiple outdoor restricting elements and multiple indoor restricting elements is adjusted in degree of supercooling.
2. the anti-refrigerant bias current control method of multi-line system according to claim 1, which is characterized in that according to each institute
The degree of supercooling of the working condition of outdoor heat exchanger, the degree of superheat of the refrigeration indoor unit and the heating indoor unit is stated to multiple institutes
At least one aperture stated in outdoor restricting element and multiple indoor restricting elements is adjusted, including：
When in the multiple outdoor heat exchanger it is at least one be outdoor evaporator when, judge it is described freeze indoor unit the degree of superheat
It is whether bigger than normal；
When the degree of superheat of the refrigeration indoor unit is bigger than normal, the corresponding indoor restricting element of the refrigeration indoor unit is determined whether
Aperture whether reach maximum opening；
If the aperture of the corresponding indoor restricting element of the refrigeration indoor unit is not up to maximum opening, increase the cool room
The aperture of the corresponding indoor restricting element of interior machine；
If the aperture of the corresponding indoor restricting element of the refrigeration indoor unit reaches maximum opening, reduce the outdoor evaporation
The aperture of the corresponding outdoor restricting element of device.
3. the anti-refrigerant bias current control method of multi-line system according to claim 2, which is characterized in that according to each institute
The degree of supercooling of the working condition of outdoor heat exchanger, the degree of superheat of the refrigeration indoor unit and the heating indoor unit is stated to multiple institutes
At least one aperture stated in outdoor restricting element and multiple indoor restricting elements is adjusted, including：
When the part in the multiple outdoor heat exchanger is outdoor condenser, another part is outdoor evaporator, institute is judged
Whether the degree of supercooling for stating heating indoor unit is bigger than normal；
If the degree of supercooling of the heating indoor unit is bigger than normal, increase opening for the outdoor corresponding outdoor restricting element of condenser
Degree.
4. the anti-refrigerant bias current control method of multi-line system according to claim 2, which is characterized in that according to each institute
The degree of supercooling of the working condition of outdoor heat exchanger, the degree of superheat of the refrigeration indoor unit and the heating indoor unit is stated to multiple institutes
At least one aperture stated in outdoor restricting element and multiple indoor restricting elements is adjusted, including：
When the multiple outdoor heat exchanger is outdoor evaporator, judge whether the degree of supercooling of the heating indoor unit is bigger than normal；
When the degree of supercooling of the heating indoor unit is bigger than normal, the corresponding indoor restricting element of the heating indoor unit is determined whether
Aperture whether reach maximum opening；
If the aperture for heating the corresponding indoor restricting element of indoor unit is not up to maximum opening, increase the heating chamber
The aperture of the corresponding indoor restricting element of interior machine；
If the aperture for heating the corresponding indoor restricting element of indoor unit reaches maximum opening, increase the outdoor evaporation
The aperture of the corresponding outdoor restricting element of device.
5. the anti-refrigerant bias current control method of multi-line system according to claim 1, which is characterized in that according to each institute
The degree of supercooling of the working condition of outdoor heat exchanger, the degree of superheat of the refrigeration indoor unit and the heating indoor unit is stated to multiple institutes
At least one aperture stated in outdoor restricting element and multiple indoor restricting elements is adjusted, including：
When the multiple outdoor heat exchanger is outdoor condenser, judge whether the degree of superheat of the refrigeration indoor unit is less than normal；
When the degree of superheat of the refrigeration indoor unit is less than normal, the corresponding indoor restricting element of the refrigeration indoor unit is determined whether
Aperture whether reach minimum aperture；
If the aperture of the corresponding indoor restricting element of the refrigeration indoor unit is not up to minimum aperture, reduce the cool room
The aperture of the corresponding indoor restricting element of interior machine；
If the aperture of the corresponding indoor restricting element of the refrigeration indoor unit reaches minimum aperture, reduce the outdoor condensation
The aperture of the corresponding outdoor restricting element of device.
6. a kind of computer readable storage medium, which is characterized in that have and be stored in instruction therein, when described instruction is performed
When, the multi-line system performs the anti-refrigerant bias current control method as any one of claim 1-5.
7. a kind of anti-refrigerant bias current control device of multi-line system, which is characterized in that the multi-line system include outdoor unit,
Multiple indoor units and part flow arrangement, the outdoor unit include the first four-way valve, multiple outdoor heat exchangers, are changed respectively with each outdoor
The second four-way valve that hot device is correspondingly arranged, the outdoor restricting element being correspondingly arranged respectively with each outdoor heat exchanger, it is each described
Indoor unit includes the indoor restricting element that indoor heat exchanger and the corresponding indoor heat exchanger are set, wherein, each interior is changed
One end of hot device is connected by corresponding indoor restricting element and the first pipeline with each outdoor restricting element, each described
The other end of indoor heat exchanger is connected by the second pipeline with the first port of first four-way valve, and pass through the 3rd pipeline with
The second port of first four-way valve is connected, and the anti-refrigerant bias current control device includes：
First acquisition module, for when the multi-line system is run with hybrid refrigeration heating mode, obtaining respectively described more
The degree of superheat of indoor unit of freezing in a indoor unit and the degree of supercooling of heating indoor unit；
Second acquisition module, for obtaining the working condition of each outdoor heat exchanger；
Control module, for working condition, the degree of superheat of the refrigeration indoor unit and the institute according to each outdoor heat exchanger
The degree of supercooling of heating indoor unit is stated at least one in multiple outdoor restricting elements and multiple indoor restricting elements
Aperture be adjusted.
8. the anti-refrigerant bias current control device of multi-line system according to claim 7, which is characterized in that the control mould
Root tuber is according to the working condition of each outdoor heat exchanger, the degree of superheat of the refrigeration indoor unit and the mistake for heating indoor unit
At least one aperture in multiple outdoor restricting elements and multiple indoor restricting elements is adjusted in cold degree, wraps
It includes：
When in the multiple outdoor heat exchanger it is at least one be outdoor evaporator when, judge it is described freeze indoor unit the degree of superheat
It is whether bigger than normal；
When the degree of superheat of the refrigeration indoor unit is bigger than normal, the corresponding indoor restricting element of the refrigeration indoor unit is determined whether
Aperture whether reach maximum opening；
If the aperture of the corresponding indoor restricting element of the refrigeration indoor unit is not up to maximum opening, increase the cool room
The aperture of the corresponding indoor restricting element of interior machine；
If the aperture of the corresponding indoor restricting element of the refrigeration indoor unit reaches maximum opening, reduce the outdoor evaporation
The aperture of the corresponding outdoor restricting element of device.
9. the anti-refrigerant bias current control device of multi-line system according to claim 8, which is characterized in that the control mould
Root tuber is according to the working condition of each outdoor heat exchanger, the degree of superheat of the refrigeration indoor unit and the mistake for heating indoor unit
At least one aperture in multiple outdoor restricting elements and multiple indoor restricting elements is adjusted in cold degree, wraps
It includes：
When the part in the multiple outdoor heat exchanger is outdoor condenser, another part is outdoor evaporator, institute is judged
Whether the degree of supercooling for stating heating indoor unit is bigger than normal；
If the degree of supercooling of the heating indoor unit is bigger than normal, increase opening for the outdoor corresponding outdoor restricting element of condenser
Degree.
10. the anti-refrigerant bias current control device of multi-line system according to claim 8, which is characterized in that the control
Module is according to the working condition of each outdoor heat exchanger, the degree of superheat of the refrigeration indoor unit and the heating indoor unit
At least one aperture in multiple outdoor restricting elements and multiple indoor restricting elements is adjusted in degree of supercooling,
Including：
When the multiple outdoor heat exchanger is outdoor evaporator, judge whether the degree of supercooling of the heating indoor unit is bigger than normal；
When the degree of supercooling of the heating indoor unit is bigger than normal, the corresponding indoor restricting element of the heating indoor unit is determined whether
Aperture whether reach maximum opening；
If the aperture for heating the corresponding indoor restricting element of indoor unit is not up to maximum opening, increase the heating chamber
The aperture of the corresponding indoor restricting element of interior machine；
If the aperture for heating the corresponding indoor restricting element of indoor unit reaches maximum opening, increase the outdoor evaporation
The aperture of the corresponding outdoor restricting element of device.
11. the anti-refrigerant bias current control device of multi-line system according to claim 7, which is characterized in that the control
Module is according to the working condition of each outdoor heat exchanger, the degree of superheat of the refrigeration indoor unit and the heating indoor unit
At least one aperture in multiple outdoor restricting elements and multiple indoor restricting elements is adjusted in degree of supercooling,
Including：
When the multiple outdoor heat exchanger is outdoor condenser, judge whether the degree of superheat of the refrigeration indoor unit is less than normal；
When the degree of superheat of the refrigeration indoor unit is less than normal, the corresponding indoor restricting element of the refrigeration indoor unit is determined whether
Aperture whether reach minimum aperture；
If the aperture of the corresponding indoor restricting element of the refrigeration indoor unit is not up to minimum aperture, reduce the cool room
The aperture of the corresponding indoor restricting element of interior machine；
If the aperture of the corresponding indoor restricting element of the refrigeration indoor unit reaches minimum aperture, reduce the outdoor condensation
The aperture of the corresponding outdoor restricting element of device.
12. a kind of multi-line system, which is characterized in that including the anti-refrigerant bias current control as any one of claim 7-11
Device processed.
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| CN201711308694.5A CN108105912B (en) | 2017-12-11 | 2017-12-11 | Multi-line system and its anti-refrigerant bias current control method, control device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109099612A (en) * | 2018-08-17 | 2018-12-28 | 珠海格力电器股份有限公司 | Heat pump equipment, electronic expansion valve control method and device thereof and storage medium |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5222371A (en) * | 1989-12-28 | 1993-06-29 | Matsushita Electric Industrial Co., Ltd. | Air conditioner of multichamber type |
| CN1609529A (en) * | 2003-10-16 | 2005-04-27 | Lg电子株式会社 | System and method for controlling temperature of refrigerant in air conditioner |
| CN1955598A (en) * | 2005-10-28 | 2007-05-02 | Lg电子株式会社 | Apparatus and method for controlling multi-type air conditioner |
| JP2009068744A (en) * | 2007-09-12 | 2009-04-02 | Mitsubishi Heavy Ind Ltd | Valve opening pulse setting method for electric expansion valve and multiple air conditioner |
| EP2241843A2 (en) * | 2009-04-09 | 2010-10-20 | Hitachi Appliances, Inc. | Refrigeration cycle apparatus |
| CN101995125A (en) * | 2009-08-10 | 2011-03-30 | 海尔集团公司 | Methods for controlling and amending multi-split air conditioner expansion valve |
| CN102345949A (en) * | 2011-09-05 | 2012-02-08 | 青岛海信日立空调系统有限公司 | Refrigerant flow regulating system of multi-connected air-conditioning heat exchanger and regulating method thereof |
| CN103542463A (en) * | 2012-07-09 | 2014-01-29 | 富士通将军股份有限公司 | Outdoor unit for air-conditioning apparatus, and air-conditioning apparatus |
| CN104214993A (en) * | 2014-09-30 | 2014-12-17 | 广东志高暖通设备股份有限公司 | Multi-line air conditioning system and oil balance device and control method thereof |
| CN104406231A (en) * | 2014-11-21 | 2015-03-11 | 珠海格力电器股份有限公司 | Multi-connected air conditioner indoor unit partner, multi-connected air conditioner indoor unit system and multi-connected air conditioner system |
| CN104748426A (en) * | 2015-03-31 | 2015-07-01 | 广东美的暖通设备有限公司 | Multi-split system |
| CN105698268A (en) * | 2016-03-23 | 2016-06-22 | 广东美的暖通设备有限公司 | Multi-online system and control method for heating and throttling element of multi-online system |
| CN107401849A (en) * | 2017-08-15 | 2017-11-28 | 广东美的暖通设备有限公司 | Multiple on-line system and its control method and device that loop valve body is subcooled |
-
2017
- 2017-12-11 CN CN201711308694.5A patent/CN108105912B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5222371A (en) * | 1989-12-28 | 1993-06-29 | Matsushita Electric Industrial Co., Ltd. | Air conditioner of multichamber type |
| CN1609529A (en) * | 2003-10-16 | 2005-04-27 | Lg电子株式会社 | System and method for controlling temperature of refrigerant in air conditioner |
| CN1955598A (en) * | 2005-10-28 | 2007-05-02 | Lg电子株式会社 | Apparatus and method for controlling multi-type air conditioner |
| JP2009068744A (en) * | 2007-09-12 | 2009-04-02 | Mitsubishi Heavy Ind Ltd | Valve opening pulse setting method for electric expansion valve and multiple air conditioner |
| EP2241843A2 (en) * | 2009-04-09 | 2010-10-20 | Hitachi Appliances, Inc. | Refrigeration cycle apparatus |
| CN101995125A (en) * | 2009-08-10 | 2011-03-30 | 海尔集团公司 | Methods for controlling and amending multi-split air conditioner expansion valve |
| CN102345949A (en) * | 2011-09-05 | 2012-02-08 | 青岛海信日立空调系统有限公司 | Refrigerant flow regulating system of multi-connected air-conditioning heat exchanger and regulating method thereof |
| CN103542463A (en) * | 2012-07-09 | 2014-01-29 | 富士通将军股份有限公司 | Outdoor unit for air-conditioning apparatus, and air-conditioning apparatus |
| CN104214993A (en) * | 2014-09-30 | 2014-12-17 | 广东志高暖通设备股份有限公司 | Multi-line air conditioning system and oil balance device and control method thereof |
| CN104406231A (en) * | 2014-11-21 | 2015-03-11 | 珠海格力电器股份有限公司 | Multi-connected air conditioner indoor unit partner, multi-connected air conditioner indoor unit system and multi-connected air conditioner system |
| CN104748426A (en) * | 2015-03-31 | 2015-07-01 | 广东美的暖通设备有限公司 | Multi-split system |
| CN105698268A (en) * | 2016-03-23 | 2016-06-22 | 广东美的暖通设备有限公司 | Multi-online system and control method for heating and throttling element of multi-online system |
| CN107401849A (en) * | 2017-08-15 | 2017-11-28 | 广东美的暖通设备有限公司 | Multiple on-line system and its control method and device that loop valve body is subcooled |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019242264A1 (en) * | 2018-06-20 | 2019-12-26 | 广东美的暖通设备有限公司 | Three-pipe heat recovery multi-split system and control method therefor |
| CN109099612A (en) * | 2018-08-17 | 2018-12-28 | 珠海格力电器股份有限公司 | Heat pump equipment, electronic expansion valve control method and device thereof and storage medium |
| CN109708271A (en) * | 2018-12-29 | 2019-05-03 | 广东美的暖通设备有限公司 | The control method and its device of outer machine system in parallel |
| WO2020143155A1 (en) * | 2019-01-10 | 2020-07-16 | 青岛海尔空调电子有限公司 | Multi-split air conditioner and control method therefor |
| US11378296B2 (en) | 2019-01-10 | 2022-07-05 | Qingdao Haier Air-Conditioning Electronic Co., Ltd. | Multi-split air conditioner and control method thereof |
| CN109764490A (en) * | 2019-01-21 | 2019-05-17 | 宁波奥克斯电气股份有限公司 | Air conditioner coolant supply state detection method, device and air-conditioning and storage medium |
| CN110017592A (en) * | 2019-03-11 | 2019-07-16 | 广东美的暖通设备有限公司 | Multi-connected machine control method, device and equipment |
| CN110398033A (en) * | 2019-07-09 | 2019-11-01 | 广东美的暖通设备有限公司 | The refrigerant circulation control method and device of heat-reclamation multi-compressors system |
| CN111486579A (en) * | 2020-04-29 | 2020-08-04 | 广东美的暖通设备有限公司 | Multi-split system and control method and device thereof |
| CN114857665A (en) * | 2022-05-30 | 2022-08-05 | 青岛海信日立空调系统有限公司 | Multi-split system |
| CN114857664A (en) * | 2022-05-30 | 2022-08-05 | 青岛海信日立空调系统有限公司 | Multi-split system |
| CN114857665B (en) * | 2022-05-30 | 2023-09-05 | 青岛海信日立空调系统有限公司 | Multi-split air conditioner system |
| CN114857664B (en) * | 2022-05-30 | 2023-11-28 | 青岛海信日立空调系统有限公司 | Multi-split air conditioner system |
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