CN106765564A - Parallel electronic expansion valve control method and device and air conditioning unit with device - Google Patents
Parallel electronic expansion valve control method and device and air conditioning unit with device Download PDFInfo
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- CN106765564A CN106765564A CN201611111652.8A CN201611111652A CN106765564A CN 106765564 A CN106765564 A CN 106765564A CN 201611111652 A CN201611111652 A CN 201611111652A CN 106765564 A CN106765564 A CN 106765564A
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- expansion valve
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- electric expansion
- step number
- electronic expansion
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000004378 air conditioning Methods 0.000 title abstract description 4
- 230000005611 electricity Effects 0.000 claims description 10
- 230000004044 response Effects 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 241001347978 Major minor Species 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
-
- 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
-
- 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
-
- 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
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a parallel electronic expansion valve control method and device and an air conditioning unit with the device. The parallel electronic expansion valve control method comprises the following steps: the method comprises the steps of arranging two electronic expansion valves in parallel, controlling the working time of the two electronic expansion valves in parallel to be equal, and keeping the opening steps to be consistent during working so as to balance the use frequency of the electronic expansion valves. The technical scheme of the invention can effectively reduce the maintenance workload and the maintenance cost caused by the damage of the single electronic expansion valve due to the fact that the running time of the single electronic expansion valve is too long and exceeds the service life, and greatly prolongs the service life of the whole project so as to achieve the application effect of avoiding replacing and maintaining the electronic expansion valve as far as possible in the life cycle of the whole project.
Description
Technical field
The present invention relates to air-conditioning technical field, more particularly to a kind of control method for electronic expansion valve in parallel, device and have
The air-conditioner set of the device.
Background technology
As people's living standard is generally improved, air-conditioning has become the necessary article of household and public place.In business
Increasingly it is received by the market (as used multi-connected machine, modularization air-cooled cold using cost performance light business's air-conditioner set higher with place
Hot water units, modularization vortex cool water unit etc.), to ensure that electric expansion valve service life is longer in module cluster, need to solve mould
The impartial control problem of each unit electric expansion valve use time in block group the inside.Conventional electric expansion valve is selected according to refrigerating capacity
Type, great refrigerating capacity just selects great electric expansion valve.The control method of conventional electric expansion valve in parallel has two kinds,
A kind of is a point primary and secondary electric expansion valve, i.e., in normal operation, usually main electronic expansion valve controls throttling, in main electricity
In the case that sub- expansion valve is not enough to control throttling, auxiliary electric expansion valve is just enabled；Another kind is that two electronics of record are swollen respectively
Swollen valve run time, during startup according to " first open and first stop, after open after stop " control, according to first way during subsequent normal operation
Adjustment.
Traditional electronic expansion valve controls have the following disadvantages：
1. if selecting Single Electron expansion valve, it is possible to because cold is too big, control electric current is too big and select less than
Suitable electric expansion valve.
2. if according to the first control method control electric expansion valve, because unit actual motion is often in low
Load operation, therefore main electric expansion valve is chronically at working condition, and the auxiliary electric expansion valve working time is not long, causes major-minor
The working time difference of electric expansion valve is excessive, and the life-span of main electric expansion valve is far below auxiliary electric expansion valve, main electronic expansion
Valve replacement is frequently high.And, when under halfload operating mode, being likely to result in the problem of electric expansion valve frequent start-stop.
3. if controlling electric expansion valve according to second control method, control logic can be complicated a lot, although can
So that two life-spans of electric expansion valve approach, but under halfload operating mode, still have asking for electric expansion valve frequent start-stop
Topic, and fluctuation can be than larger.
The content of the invention
In view of this, the invention provides a kind of control method for electronic expansion valve in parallel, including：By two electric expansion valves
It is arranged in parallel, controls the working time of described two electric expansion valves in parallel impartial, and step is kept it turned on when work
Number is consistent, with the usage frequency of the balanced electric expansion valve.
Alternatively, after electricity on Climate Control Module unit, the electricity in parallel in each system in each module is controlled
Sub- expansion valve is initialized, and the electric expansion valve in parallel is closed upon initialization, waits power-on command.
Alternatively, response receives power-on command, and the electronics in parallel in each system in each module is swollen
Swollen valve gets to default initial step number simultaneously.
Alternatively, opened simultaneously greatly when the electric expansion valve of the parallel connection is adjusted or turn down identical step number；And in compression
After office closes, the electric expansion valve in parallel is simultaneously closed off.
Alternatively, control the electric expansion valve in parallel is successively carried out in order in initialization；And/or, control institute
The electric expansion valve for stating parallel connection is successively carried out in order when step number is adjusted, and controls the unlatching of the electric expansion valve of the parallel connection
Step number is consistent.
Another aspect of the present invention provides a kind of control device for electronic expansion valve in parallel again, including：Two for being arranged in parallel
Individual electric expansion valve；Control unit, it is impartial for controlling the working time of electric expansion valve of described two parallel connections, and in work
When to keep it turned on step number consistent, with the usage frequency of the balanced electric expansion valve.
Alternatively, described control unit is additionally operable to：On the Climate Control Module unit after electricity, each for controlling in each module is
The electric expansion valve in parallel in system is initialized, and the electric expansion valve in parallel is upon initialization in closing
State, waits power-on command.
Alternatively, described control unit is additionally operable to：Response receives power-on command, by each system in each module
Electric expansion valve described in parallel get to default initial step number simultaneously.
Alternatively, described control unit is additionally operable to：Opened simultaneously when the electric expansion valve of the parallel connection is adjusted big or turned down
Identical step number；And after compressor closing, the electric expansion valve in parallel is simultaneously closed off.
Alternatively, described control unit is additionally operable to：The control electric expansion valve in parallel is first in order in initialization
After carry out；And/or, control the electric expansion valve in parallel successively to be carried out in order when step number is adjusted, and described in control simultaneously
The unlatching step number of the electric expansion valve of connection is consistent.
Another aspect of the present invention provides a kind of air-conditioner set again, with the device described in any of the above-described.
Technical scheme can effectively reduce and exceed and use because Single Electron expansion valve run time is long
Life-span damages caused maintenance load and maintenance cost；Electric expansion valve can frequent start-stop under avoiding halfload state
Situation；The service life of whole engineering is greatly extended, is avoided as much as in whole project life cycle with reaching
The application effect of repair and replacement is carried out to electric expansion valve.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes a part of the invention, this hair
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the device structure schematic diagram of the electric expansion valve in parallel that the present invention is provided；
The step of Fig. 2 is a kind of preferred embodiment of the control method for electronic expansion valve in parallel that the present invention is provided flow chart.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Corresponding accompanying drawing is clearly and completely described to technical solution of the present invention.Obviously, described embodiment is only the present invention one
Section Example, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, belong to the scope of protection of the invention.
It should be noted that term " first ", " in description and claims of this specification and above-mentioned accompanying drawing
Two " it is etc. for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so using
Data can exchange in the appropriate case, so as to embodiments of the invention described herein can with except illustrating herein or
Order beyond those of description is implemented.Additionally, term " comprising " and " having " and their any deformation, it is intended that cover
Lid is non-exclusive to be included, for example, the process, method, system, product or the equipment that contain series of steps or unit are not necessarily limited to
Those steps or unit clearly listed, but may include not list clearly or for these processes, method, product
Or other intrinsic steps of equipment or unit.
The invention provides a kind of control method for electronic expansion valve in parallel, including：Two electric expansion valves are arranged in parallel,
The working time of the described two electric expansion valves in parallel of control is impartial, and keeps it turned on step number unanimously when work, with
The usage frequency of the balanced electric expansion valve.Electric expansion valve is to adjust evaporator liquid supply rate according to pre-set programs, because belonging to
Electronic type shaping modes, therefore referred to as electric expansion valve.It has adapted to the demand for development of refrigeration electromechanical integration, with thermal expansion
The incomparable good characteristic of valve, for the intelligentized control method of refrigeration system provides condition, the development for refrigeration industry is played
Important effect.In control mode, the technical scheme that the present invention is provided considers traditional electric expansion valve in parallel due to list
The frequent breakage problem that individual electric expansion valve long-term work brings, the electric expansion valve for dividing that will have primary and secondary on control is changed
Equal electric expansion valve, allows electric expansion valve to open together with stopping, while reaching end of life.
Fig. 1 is the device structure schematic diagram of the electric expansion valve in parallel that the present invention is provided.Equipment identity shown in Fig. 1 is such as
Under：1 is compressor, and 2 is case tube heat exchanger, and 3 is electric expansion valve in parallel.It is shown in dashed rectangle region in Fig. 1 marked as 3
Be exactly two electric expansion valves being connected in parallel.The technical scheme that the present invention is provided is when design selection by parallel connection
Two small electric expansion valves with replace big electric expansion valve, while control computing when allow two electric expansion valves work when
Wait, step number is consistent to keep them to open, and work is adjusted simultaneously simultaneously to reach electric expansion valve, and the cumulative time is impartial, greatly extends
The service life of whole engineering.
According to a kind of implementation method of parallel connection control method for electronic expansion valve of the invention, after electricity on Climate Control Module unit,
The electric expansion valve in parallel in each system in each module is controlled to be initialized, the electronic expansion in parallel
Valve is closed upon initialization, waits power-on command.Climate Control Module unit has the module cluster for including multiple modules,
Multiple systems are there may be in one module, each system is separate.Module machine can enter according to the need for payload
Row independent assortment, any increase and decrease, using very convenient.Fig. 2 is the one kind for the control method for electronic expansion valve in parallel that the present invention is provided
The step of preferred embodiment flow chart.As shown in Fig. 2 setting each module includes n system, on Climate Control Module unit after electricity,
Electric expansion valve in each system in each module is initialized at once.Electric expansion valve after having initialized is in
Closed mode, waits power-on command.
According to a kind of implementation method of parallel connection control method for electronic expansion valve of the invention, response receives power-on command, will
The electric expansion valve in parallel in each system in each module gets to default initial step number simultaneously.As shown in Fig. 2
After power-on command sends, the electric expansion valve in parallel of each modular system 1 is got into initial step number Dst simultaneously, and (Dst represents that electronics is swollen
The swollen initial step number of valve), after the electric expansion valve in parallel of system 1 gets to initial step number, the electric expansion valve in parallel of system 2 is and then
Action, by that analogy, until the electric expansion valve of whole n system gets to initial step number.
According to a kind of implementation method of parallel connection control method for electronic expansion valve of the invention, adjusting, the electronics in parallel is swollen
Identical step number is opened greatly or turns down during swollen valve simultaneously；And after compressor closing, by the electric expansion valve in parallel simultaneously
Close.
As shown in Fig. 2 the electric expansion valve of each system is got to after initial step number in the module, the pressure of each system in module
Contracting machine is opened.Unit operation for a period of time after, electric expansion valve enters normal regulating state, i.e., " with opening with stopping, while regulation "：
When electric expansion valve needs to open big a certain step number, electric expansion valve in parallel opens big identical step number simultaneously；Work as electronic expansion
When valve needs to turn down a certain step number, electric expansion valve in parallel turns down identical step number simultaneously.
As shown in Fig. 2 during shutdown, after compressor closing, each modular system 1,2 ... n parallel connections electric expansion valve are simultaneously
Simultaneously close off again.
More than in each step, either in start, operation or shutdown, all by two electric expansion valves of parallel connection
Controlled as an electric expansion valve, with opening with stopping, while regulation, it is ensured that the run time of two electric expansion valves is complete
Consistent.Above-mentioned technical proposal is due to two electric expansion valves of parallel connection " with same stopping is opened ", the step number being out in halfload
It is small, without frequent start-stop, therefore solve the problems, such as electric expansion valve meeting frequent start-stop under halfload state in the prior art；
Also solve the problems, such as that the major-minor electric expansion valve Cumulative Elapsed Time in module in the prior art and in module cluster is uneven simultaneously.
According to a kind of implementation method of parallel connection control method for electronic expansion valve of the invention, the electronic expansion in parallel is controlled
Valve is successively carried out in order in initialization；And/or, control the electric expansion valve in parallel first in order when step number is adjusted
After carry out, and control it is described parallel connection electric expansion valve unlatching step number it is consistent.The implementation method of this " in order successively " with
The mode of above-mentioned " with same stopping is opened " is different.Comparatively speaking, the technical scheme " with opening with stopping " be it is advantageous on the available machine time,
But the electric current and voltage of control can be larger, therefore to consider whether mainboard can provide so big electric current and voltage；" in order
Technical scheme successively ", the available machine time is more long, but mainboard electric current, voltage can be with smaller therefore smaller to the limitation of mainboard
Some.
Another aspect of the present invention provides a kind of control device for electronic expansion valve in parallel again, including：Two for being arranged in parallel
Individual electric expansion valve；Control unit, it is impartial for controlling the working time of electric expansion valve of described two parallel connections, and in work
When to keep it turned on step number consistent, with the usage frequency of the balanced electric expansion valve.The electronics in parallel that the present invention is provided is swollen
The device structure of swollen valve is as shown in figure 1, shown in dashed rectangle region in Fig. 1 marked as 3 is electric expansion valve in parallel.
According to a kind of implementation method of parallel connection control device for electronic expansion valve of the invention, described control unit is additionally operable to：
On Climate Control Module unit after electricity, the electric expansion valve in parallel in each system in each module is controlled to carry out initially
Change, the electric expansion valve in parallel is closed upon initialization, waits power-on command.The control of described control unit
Flow processed is shown in Figure 2.
According to a kind of implementation method of parallel connection control device for electronic expansion valve of the invention, described control unit is additionally operable to：Ring
Power-on command should be received, the electric expansion valve in parallel in each system in each module is got to simultaneously default
Initial step number.The control flow of described control unit is shown in Figure 2.
According to a kind of implementation method of parallel connection control device for electronic expansion valve of the invention, described control unit is additionally operable to：
Open simultaneously greatly or turn down identical step number during the electric expansion valve of the regulation parallel connection；And after compressor closing, will be described
Electric expansion valve in parallel is simultaneously closed off.The control flow of described control unit is shown in Figure 2.
According to a kind of implementation method of parallel connection control device for electronic expansion valve of the invention, described control unit is additionally operable to：Control
The system electric expansion valve in parallel is successively carried out in order in initialization；And/or, control the electric expansion valve in parallel
Successively carried out in order when step number is adjusted, and control the unlatching step number of the electric expansion valve of the parallel connection consistent.
It is yet another aspect of the present invention to provide a kind of air-conditioner set, with the device described in any of the above-described.
Technical scheme can effectively reduce and exceed and use because Single Electron expansion valve run time is long
Life-span damages caused maintenance load and maintenance cost；Electric expansion valve can frequent start-stop under avoiding halfload state
Situation；The service life of whole engineering is greatly extended, is avoided as much as in whole project life cycle with reaching
The application effect of repair and replacement is carried out to electric expansion valve.
Function described herein can be implemented in hardware, the software by computing device, firmware or its any combinations.
If implemented in the software by computing device, then computer can be stored in using function as one or more instructions or code
Transmitted on readable media or via computer-readable media.Other examples and embodiment will in of the invention and appended right
Ask in the scope and spirit of book.For example, be attributed to the property of software, function described above can be used by processor,
The software implementation of hardware, firmware, hardwired or the combination execution for appointing whichever in these.Additionally, each functional unit can be with integrated
In a processing unit, or unit is individually physically present, it is also possible to which two or more units are integrated in
In one unit.
In several embodiments provided herein, it should be understood that disclosed technology contents, can be by other
Mode is realized.Wherein, device embodiment described above is only schematical, such as division of described unit, Ke Yiwei
A kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling or direct-coupling or communication connection can be the INDIRECT COUPLING or communication link of unit or module by some interfaces
Connect, can be electrical or other forms.
It is described as separating component illustrate unit can be or may not be it is physically separate, as control fill
The part put can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On unit.Some or all of unit therein can be according to the actual needs selected to realize the purpose of this embodiment scheme.
If the integrated unit is to realize in the form of SFU software functional unit and as independent production marketing or use
When, can store in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part for being contributed to prior art in other words or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are used to so that a computer
Equipment (can be personal computer, server or network equipment etc.) perform each embodiment methods described of the invention whole or
Part steps.And foregoing storage medium includes：USB flash disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can be with store program codes
Medium.
Embodiments of the invention are the foregoing is only, is not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made,
Equivalent, improvement etc., should be included within scope of the presently claimed invention.
Claims (11)
1. a kind of control method for electronic expansion valve in parallel, it is characterised in that including：Two electric expansion valves are arranged in parallel, are controlled
The working time of the described two electric expansion valves in parallel of system is impartial, and keeps it turned on step number unanimously when work, with equal
Weigh the usage frequency of the electric expansion valve.
2. method according to claim 1, it is characterised in that after electricity on Climate Control Module unit, control in each module
Each system in electric expansion valve described in parallel initialized, the electric expansion valve in parallel is upon initialization
It is closed, waits power-on command.
3. method according to claim 1 and 2, it is characterised in that response receives power-on command, by each module
The electric expansion valve in parallel in each system gets to default initial step number simultaneously.
4. the method according to any one of claim 1-3, it is characterised in that adjusting the electric expansion valve in parallel
When open simultaneously big or turn down identical step number；And after compressor closing, the electric expansion valve in parallel is simultaneously closed off.
5. the method according to any one of claim 1-4, it is characterised in that
The control electric expansion valve in parallel is successively carried out in order in initialization；And/or,
The control electric expansion valve in parallel is successively carried out in order when step number is adjusted, and controls the electronics of the parallel connection swollen
The unlatching step number of swollen valve is consistent.
6. a kind of control device for electronic expansion valve in parallel, it is characterised in that including：
Two electric expansion valves being arranged in parallel；
Control unit, it is impartial for controlling the working time of electric expansion valve of described two parallel connections, and protected when work
Unlatching step number is held consistent, with the usage frequency of the balanced electric expansion valve.
7. device according to claim 6, it is characterised in that described control unit is additionally operable to：On Climate Control Module unit
After electricity, the electric expansion valve in parallel in each system in each module is controlled to be initialized, the electricity in parallel
Sub- expansion valve is closed upon initialization, waits power-on command.
8. the device according to claim 6 or 7, it is characterised in that described control unit is additionally operable to：Response receives start
Order, default initial step number is got to by the electric expansion valve in parallel in each system in each module simultaneously.
9. the device according to any one of claim 6-8, it is characterised in that described control unit is additionally operable to：In regulation
Opened simultaneously greatly during the electric expansion valve of the parallel connection or turn down identical step number；And after compressor closing, by the parallel connection
Electric expansion valve simultaneously close off.
10. the device according to any one of claim 6-9, it is characterised in that described control unit is additionally operable to：
The control electric expansion valve in parallel is successively carried out in order in initialization；And/or,
The control electric expansion valve in parallel is successively carried out in order when step number is adjusted, and controls the electronics of the parallel connection swollen
The unlatching step number of swollen valve is consistent.
11. a kind of air-conditioner sets, it is characterised in that with the device as any one of claim 6-10.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611111652.8A CN106765564B (en) | 2016-12-06 | 2016-12-06 | Parallel electronic expansion valve control method and device and air conditioning unit with device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611111652.8A CN106765564B (en) | 2016-12-06 | 2016-12-06 | Parallel electronic expansion valve control method and device and air conditioning unit with device |
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| CN106765564A true CN106765564A (en) | 2017-05-31 |
| CN106765564B CN106765564B (en) | 2019-01-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192180A (en) * | 2017-07-31 | 2017-09-22 | 绵阳美菱软件技术有限公司 | A kind of control method for electronic expansion valve, apparatus and system |
| EP4265981A1 (en) * | 2022-04-22 | 2023-10-25 | ratiotherm GmbH & Co. KG | Heat pump-based building heating and/or cooling |
| US12007149B2 (en) | 2021-08-20 | 2024-06-11 | Carrier Corporation | Expansion control system on a centrifugal chiller with an integral subcooler |
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