CN106940103A - A kind of parallel compressor system and refrigeration plant - Google Patents
A kind of parallel compressor system and refrigeration plant Download PDFInfo
- Publication number
- CN106940103A CN106940103A CN201710151005.8A CN201710151005A CN106940103A CN 106940103 A CN106940103 A CN 106940103A CN 201710151005 A CN201710151005 A CN 201710151005A CN 106940103 A CN106940103 A CN 106940103A
- Authority
- CN
- China
- Prior art keywords
- compressor
- electric expansion
- parallel
- expansion valve
- throttling arrangement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005057 refrigeration Methods 0.000 title claims abstract description 11
- 230000004907 flux Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/06—Several compression cycles arranged in parallel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0251—Compressor control by controlling speed with on-off operation
-
- 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)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a kind of parallel compressor system, including some compressors, the exhaust outlet of some compressors is parallel with one another, air entry composition compressor set parallel with one another, oil eliminator, condenser, throttling arrangement and evaporator are sequentially connected in series between the exhaust end and suction end of compressor set, throttling arrangement includes some electric expansion valves in parallel；In said system, cold medium flux can be more precisely controlled by the mutual cooperation of several electric expansion valves, the more stable operation of guarantee system, and in the case of components of system as directed load, part electric expansion valve can be closed, both the normal operation of system can have been ensured, the service life of electric expansion valve can be extended again, in addition, on the premise of part electric expansion valve is damaged, system with stable operation, can still improve the stability of system.The invention also discloses a kind of refrigeration plant.
Description
Technical field
The present invention relates to art of refrigeration units, more particularly to a kind of parallel compressor system and refrigeration plant.
Background technology
As the performance to refrigeration plant, efficiency require more and more higher, compressor parallel technology is arisen at the historic moment, thereupon
Be how to control amount of restriction the problem of.
In the prior art, it is general by capillary either heating power expansion valve is Lai real to the control of amount of restriction in compressor assembly
Existing, still, there is the uncontrollable shortcoming of amount of restriction in capillary, in the parallel compressor system for needing to control amount of restriction not
It is applicable；And although heating power expansion valve can adjust amount of restriction, its reaction time is longer, and regulation is not in time.
Therefore, how a kind of throttle structure is provided, can fast reaction, amount of restriction is adjusted in time, as this area
Technical staff's important technological problems urgently to be resolved hurrily.
The content of the invention
In view of this, the invention provides a kind of parallel compressor system and refrigeration plant, so that reach can be fast
The purpose of speed reaction, in time regulation amount of restriction.
To achieve the above object, the present invention provides following technical scheme：
A kind of parallel compressor system, including some compressors, the exhaust outlet of some compressors are parallel with one another,
Air entry composition compressor set parallel with one another, has been sequentially connected in series oil between the exhaust end and suction end of the compressor set and has separated
Device, condenser, throttling arrangement and evaporator, the throttling arrangement include some electric expansion valves in parallel.
Preferably, the electric expansion valve corresponded with the compressor and the opening and closing of the electric expansion valve with it is corresponding
The compressor start and stop linkage.
Preferably, when controller detects electric expansion valve failure, compressor corresponding with the electric expansion valve is closed.
Preferably, the electric expansion valve is closed with the shutdown of the compressor, and the electric expansion valve is in the pressure
Opened in advance before the start of contracting machine.
Preferably, a frequency-changeable compressor is at least included in the compressor set.
A kind of refrigeration plant, including compressor assembly, the compressor assembly are the compression in parallel described in as above any one
Machine system.
From above-mentioned technical proposal as can be seen that the parallel compressor system that provides of the present invention, including some compressors, if
The exhaust outlet of dry compressor is parallel with one another, air entry composition compressor set parallel with one another, the exhaust end and air-breathing of compressor set
Oil eliminator, condenser, throttling arrangement and evaporator are sequentially connected in series between end, throttling arrangement includes some electronics in parallel
Expansion valve；In above-mentioned parallel compressor system, adopted several reactions in time, more accurate, life-span longer electronic expansion
Valve parallel connection constitutes throttling arrangement, so, if the aperture of Single Electron expansion valve is 0~mb, and n electric expansion valve is in parallel
The aperture of throttling arrangement afterwards just can reach 0~n*mb, therefore, can be more by the mutual cooperation of several electric expansion valves
Accurately control cold medium flux, it is ensured that system more stable operation, and in the case of components of system as directed load, part can be closed
Electric expansion valve, can both ensure the normal operation of system, and can extend the service life of electric expansion valve again, in addition,
On the premise of part electric expansion valve is damaged, system with stable operation, can still improve the stability of system.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of parallel compressor system provided in an embodiment of the present invention；
Fig. 2 is the structural representation of throttling arrangement in parallel compressor system provided in an embodiment of the present invention.
Embodiment
The invention provides a kind of parallel compressor system and refrigeration plant, with reach can fast reaction, and
When adjust amount of restriction purpose.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 and Fig. 2 are referred to, Fig. 1 is the structural representation of parallel compressor system provided in an embodiment of the present invention, Fig. 2
For the structural representation of throttling arrangement in parallel compressor system provided in an embodiment of the present invention.
The system of a kind of parallel connection compressor 1 that the present invention is provided, including some compressors 1, the exhaust of some compressors 1
Parallel with one another, the air entry composition compressor set parallel with one another of mouth, has been sequentially connected in series between the exhaust end and suction end of compressor set
Oil eliminator 2, condenser 3, throttling arrangement 4 and evaporator 5, throttling arrangement 4 include some electric expansion valves in parallel.
Compared with prior art, the system of parallel connection compressor 1 that the present invention is provided, has adopted several reactions timely, more smart
Really, the life-span it is longer electric expansion valve parallel connection constitute throttling arrangement 4, so, if the aperture of Single Electron expansion valve be 0~
Mb, the then aperture of the throttling arrangement 4 after n electric expansion valve is in parallel just can reach 0~n*mb, therefore, pass through several electronics
The mutual cooperation of expansion valve can more precisely control cold medium flux, it is ensured that system more stable operation, and in Account Dept
In the case of dividing load, part electric expansion valve can be closed, can both ensure the normal operation of system, it is swollen to extend electronics again
The service life of swollen valve, in addition, on the premise of part electric expansion valve is damaged, system can still be carried with stable operation
The high stability of system.
The quantity of electric expansion valve can be adjusted as needed, can be more than the quantity of compressor 1, can also be less than
The quantity of compressor 1, in embodiments of the present invention, electric expansion valve is identical with the quantity of compressor 1 and corresponds, meanwhile, electricity
The opening and closing of sub- expansion valve links with the start and stop of corresponding compressor 1, by the linkage of electric expansion valve and compressor 1, not only may be used
Control system is stable, efficiently run, and control is more accurate, and can extend the service life of electric expansion valve.
Further optimize above-mentioned technical proposal, in embodiments of the present invention, when controller detects electric expansion valve failure,
Close compressor 1 corresponding with the electric expansion valve.
The on-off mode of above-mentioned electric expansion valve is only a kind of preferred embodiment provided in an embodiment of the present invention, real
Border is not limited in above-mentioned one kind, such as, can also be that electric expansion valve is closed, electric expansion valve with the shutdown of compressor 1
Opened in advance before compressor 1 is started shooting.So, it is fully closed in the seasonal electric expansion valve of shutdown, prevent the high-temp liquid stream of condenser 3
Enter evaporator 5, energy loss when causing to be again started up.Before start, by electric expansion valve standard-sized sheet, put down system high and low pressure side
Weighing apparatus, is then turned on compressor 1.Light-load starting is so both realized, the heat loss in shutting down is reduced again.
Further optimize above-mentioned technical proposal, in embodiments of the present invention, a frequency conversion pressure is at least included in compressor set
Contracting machine 1.
The on-off mode with regard to the throttling arrangement 4 under different load is described further below：
When system is in 100% load, needs to carry out aperture regulation by actual motion, can suitably close part electricity
Sub- expansion valve is all turned on electric expansion valve, and each electric expansion valve coordinated adjusts amount of restriction.
, can be according to electric expansion valve and the corresponding relation of compressor 1, to close corresponding electronics in components of system as directed load
Expansion valve, i.e., with the start-stop synchro switch of compressor 1, meanwhile, can steady effective control system by remaining electric expansion valve
Operation, in this case, controller adjust each electronic expansion valve opening according to actually required amount of restriction to coordinate；Make system
More immediate stability is run, and relative to the throttle structure of Single Electron expansion valve, the regulation for amount of restriction is more accurate.
Whether in the case of 100% load, or in the case of sub-load, though part electric expansion valve by
Damage, system still can normally be run by remaining electric expansion valve.
The embodiment of the invention also discloses a kind of refrigeration plant, including the system of compressor 1, wherein, the system of compressor 1 is such as
The system of parallel connection compressor 1 described in upper any one.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (6)
1. a kind of parallel compressor system, including some compressors, the exhaust outlet of some compressors are parallel with one another, inhale
Gas port composition compressor set parallel with one another, be sequentially connected in series between the exhaust end and suction end of the compressor set oil eliminator,
Condenser, throttling arrangement and evaporator, it is characterised in that the throttling arrangement includes some electric expansion valves in parallel.
2. parallel compressor system according to claim 1, it is characterised in that the electric expansion valve and the compressor
Correspond and the opening and closing of the electric expansion valve links with the start and stop of the corresponding compressor.
3. parallel compressor system according to claim 2, it is characterised in that controller detects electric expansion valve failure
When, close compressor corresponding with the electric expansion valve.
4. parallel compressor system according to claim 1, it is characterised in that the electric expansion valve is with the compressor
Shutdown and close, the electric expansion valve the compressor start before in advance open.
5. the parallel compressor system according to claim any one of 1-4, it is characterised in that in the compressor set at least
Including a frequency-changeable compressor.
6. a kind of refrigeration plant, including compressor assembly, it is characterised in that the compressor assembly is that claim 1-4 such as appoints
Parallel compressor system described in one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710151005.8A CN106940103A (en) | 2017-03-14 | 2017-03-14 | A kind of parallel compressor system and refrigeration plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710151005.8A CN106940103A (en) | 2017-03-14 | 2017-03-14 | A kind of parallel compressor system and refrigeration plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106940103A true CN106940103A (en) | 2017-07-11 |
Family
ID=59469840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710151005.8A Pending CN106940103A (en) | 2017-03-14 | 2017-03-14 | A kind of parallel compressor system and refrigeration plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106940103A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986224A (en) * | 2019-11-07 | 2020-04-10 | 珠海格力电器股份有限公司 | Air conditioner, control method thereof and storage medium |
| CN113280461A (en) * | 2021-05-28 | 2021-08-20 | 珠海格力电器股份有限公司 | Control method and control device for throttling unit of refrigeration system, storage medium and refrigeration system |
| CN115727579A (en) * | 2022-11-28 | 2023-03-03 | 江苏拓米洛环境试验设备有限公司 | Control method and device of refrigeration system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3988904A (en) * | 1974-12-05 | 1976-11-02 | H. A. Phillips & Co. | Refrigeration system |
| CN1385658A (en) * | 2001-05-14 | 2002-12-18 | 广东科龙电器股份有限公司 | Apparatus capable of replacing electronic expansion valve in outdoor unit of air-conditioning system |
| CN1414324A (en) * | 2002-10-16 | 2003-04-30 | 广东科龙电器股份有限公司 | Twin compressor room air conditioner and its control method |
| JP2009168261A (en) * | 2008-01-11 | 2009-07-30 | Panasonic Corp | Heat pump device |
| CN201548001U (en) * | 2009-10-31 | 2010-08-11 | 宁波奥克斯电气有限公司 | Throttling device for refrigeration system with three parallel-connected compressors |
| CN203571884U (en) * | 2013-09-23 | 2014-04-30 | 深圳麦克维尔空调有限公司 | Throttling assembly and water-cooling and multi-connected air conditioning system |
-
2017
- 2017-03-14 CN CN201710151005.8A patent/CN106940103A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3988904A (en) * | 1974-12-05 | 1976-11-02 | H. A. Phillips & Co. | Refrigeration system |
| CN1385658A (en) * | 2001-05-14 | 2002-12-18 | 广东科龙电器股份有限公司 | Apparatus capable of replacing electronic expansion valve in outdoor unit of air-conditioning system |
| CN1414324A (en) * | 2002-10-16 | 2003-04-30 | 广东科龙电器股份有限公司 | Twin compressor room air conditioner and its control method |
| JP2009168261A (en) * | 2008-01-11 | 2009-07-30 | Panasonic Corp | Heat pump device |
| CN201548001U (en) * | 2009-10-31 | 2010-08-11 | 宁波奥克斯电气有限公司 | Throttling device for refrigeration system with three parallel-connected compressors |
| CN203571884U (en) * | 2013-09-23 | 2014-04-30 | 深圳麦克维尔空调有限公司 | Throttling assembly and water-cooling and multi-connected air conditioning system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986224A (en) * | 2019-11-07 | 2020-04-10 | 珠海格力电器股份有限公司 | Air conditioner, control method thereof and storage medium |
| CN110986224B (en) * | 2019-11-07 | 2021-05-14 | 珠海格力电器股份有限公司 | Air conditioner, control method thereof and storage medium |
| CN113280461A (en) * | 2021-05-28 | 2021-08-20 | 珠海格力电器股份有限公司 | Control method and control device for throttling unit of refrigeration system, storage medium and refrigeration system |
| CN115727579A (en) * | 2022-11-28 | 2023-03-03 | 江苏拓米洛环境试验设备有限公司 | Control method and device of refrigeration system |
| CN115727579B (en) * | 2022-11-28 | 2023-09-29 | 江苏拓米洛高端装备股份有限公司 | Control method and device of refrigerating system |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170711 |